水 Water

For All Spaces: Water delivered to the project and intended for human contact (e.g., drinking, cooking and dishwashing, handwashing, showering or bathing) meets the following thresholds: a. Turbidity is less than or equal to 1.0 NTU, FTU or FNU (nephelometric turbidity, formazin turbidity or formazin nephelometric units, respectively). b. Coliforms are not detected in any 100 ml sample. Note: Multifamily residential projects may achieve WELL Certification at the Bronze or Silver level without testing in dwelling units, but cannot achieve Gold or Platinum without testing in dwelling units. See Sampling Rates for Multifamily Residential in the WELL Performance Verification Guidebook for further details. WELL Core Guidance: Meet these requirements in the whole building. References 1. Institute of Medicine. Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate. Washington, DC: The National Academies Press; 2005. 2. European Food Safety Authority. Dietary Reference Values for nutrients Summary report. EFSA Supporting Publications. 2017;14(12):e15121E. 3. Kenney EL, Long MW, Cradock AL, Gortmaker SL. Prevalence of Inadequate Hydration Among US Children and Disparities by Gender and Race/Ethnicity: National Health and Nutrition Examination Survey, 2009–2012. American Journal of Public Health. 2015;105(8):e113-e118. 4. Malisova O, Athanasatou A, Pepa A, et al. Water Intake and Hydration Indices in Healthy European Adults: The European Hydration Research Study (EHRS). Nutrients. 2016;8(4). 5. Sui Z, Zheng M, Zhang M, Rangan A. Water and Beverage Consumption: Analysis of the Australian 2011-2012 National Nutrition and Physical Activity Survey. Nutrients. 2016;8(11). 6. Onufrak SJ, Park S, Sharkey JR, Sherry B. The relationship of perceptions of tap water safety with intake of sugar- sweetened beverages and plain water among US adults. Public Health Nutrition. 2014;17(1):179-185. 7. US Centers for Disease Control & Prevention. Ten Great Public Health Achievements—United States, 1900-1999. JAMA. 1999;281(16):1481-1481. 8. World Health Organization. Guidelines for drinking-water quality. 4th ed. Geneva, Switzerland: WHO Press; 2017. 9. World Health Organization. Trihalomethanes in Drinking-water. Geneva, Switzerland2005. 10. US Centers for Disease Control & Prevention. Legionella (Legionnaires' Disease and Pontiac Fever). https://www.cdc.gov/legionella/index.html. Published 2019. Updated April 30, 2018. Accessed December 20, 2019. 11. World Health Organization. WHO guidelines for indoor air quality: dampness and mould. 2009. 12. UNICEF. Water, Sanitation and Hygiene. https://www.unicef.org/wash/. Published 2016. Accessed June 6, 2020. 13. Luby SP, Agboatwalla M, Painter J, Altaf A, Billhimer WL, Hoekstra RM. Effect of intensive handwashing promotion on childhood diarrhea in high-risk communities in Pakistan: a randomized controlled trial. JAMA. 2004;291(21):2547-2554. 14. World Health Organization. Coronavirus disease (COVID-19) advice for the public. https://www.who.int/emergencies/diseases/novel

For All Spaces: The following requirements are met: a. The project provides at least one drinking water dispenser, plus one drinking water dispenser per dwelling unit. b. All drinking water dispensers provide water that meets the following parameters:1 1. Arsenic ≤ 0.01 mg/L. 2. Cadmium ≤ 0.003 mg/L. 3. Chromium (total) ≤ 0.05 mg/L. 4. Copper ≤ 2 mg/L. 5. Fluoride ≤ 1.5 mg/L. 6. Lead ≤ 0.01 mg/L. 7. Mercury (total) ≤ 0.006 mg/L. 8. Nickel ≤ 0.07 mg/L. 9. Nitrate ≤ 50 mg/L as Nitrate (11 mg/L as Nitrogen). 10. Nitrite ≤ 3 mg/L as Nitrite (0.9 mg/L as Nitrogen). 11. Total chlorine ≤ 5 mg/L. c. All drinking water dispensers provide water that meets the following parameters: 1. Residual (free) chlorine does not exceed 4 mg/L.3 2. The concentration of total trihalomethanes (TTHM, sum of dibromochloromethane, bromodichloromethane, chloroform and bromoform) is 0.08 mg/L or less. 3 3. The concentration of haloacetic acids (HAA5, sum of chloroacetic, dichloroacetic, trichloroacetic, bromoacetic and dibromoacetic acids) is 0.06 mg/L or less.3 Note: Multifamily residential projects may achieve WELL Certification at the Bronze or Silver level without testing in dwelling units, but cannot achieve Gold or Platinum without testing in dwelling units. See Sampling Rates for Multifamily Residential in the WELL Performance Verification Guidebook for further details. WELL Core Guidance: Meet these requirements in the whole building. Water will be sampled from non-leased spaces and the project must either: 1. Confirm that the same water treatment system (if applicable) will be used in all leased spaces. 2. Provide an allowance to tenants to purchase the same type of treatment system (if applicable) in leased spaces. If there is no water supply in non-leased spaces, water will be sampled from leased spaces.

For All Spaces: Option 1: Drinking water quality report The following requirements are met: a. A municipal water quality report issued not more than one year before project registration covers at least two of the pesticides below. All reported pesticides comply with the following thresholds:1 1. Aldrin and Dieldrin (combined): 0.00003 mg/L or less. 2. Atrazine: 0.1 mg/L or less. 3. Carbofuran: 0.007 mg/L or less. 4. Chlordane: 0.0002 mg/L or less. 5. 2,4-Dichlorophenoxyacetic acid (2,4-D): 0.03 mg/L or less. 6. Dichlorodiphenyltrichloroethane (DDT) and metabolites: 0.001 mg/L or less. 7. Lindane: 0.002 mg/L or less. 8. Pentachlorophenol (PCP): 0.009 mg/L or less. b. A municipal water quality report issued not more than one year before project registration contains concentrations of at least three of the organic contaminants below. All reported organic contaminants comply with the following thresholds:1 1. Benzene: 0.01 mg/L. 2. Benzo[a]pyrene: 0.0007 mg/L. 3. Carbon tetrachloride: 0.004 mg/L. 4. 1,2-Dichloroethane: 0.03 mg/L. 5. Tetrachloroethene (Tetrachloroethylene): 0.04 mg/L. 6. Toluene: 0.7 mg/L. 7. Trichloroethene: 0.02 mg/L. 8. 2,4,6-Trichlorophenol: 0.2 mg/L. 9. Vinyl Chloride: 0.0003 mg/L. 10. Xylenes (o-, m- and p-): 0.5 mg/L. OR Option 2: On-site testing The following requirements are met: a. All drinking water dispensers provide water that meets thresholds for at least two pesticides and three organic contaminants listed under ‘Drinking Water Quality Report’. b. Water is tested by a professional demonstrated not to have a conflict of interest with the WELL project. Note: Project selects pesticides and/or organic contaminants found above thresholds established under ‘Drinking Water Quality Report’ in any applicable municipal water quality report, if available. WELL Core Guidance: Meet these requirements in the whole building. Water will be sampled from non-leased spaces and the project must either: 1. Confirm that the same water treatment system (if applicable) will be used in all leased spaces. 2. Provide an allowance to tenants to purchase the same type of treatment system (if applicable) in leased spaces. If there is no water supply in non-leased spaces, water will be sampled from leased spaces. References 1. Institute of Medicine. Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate. Washington, DC: The National Academies Press; 2005. 2. European Food Safety Authority. Dietary Reference Values for nutrients Summary report. EFSA Supporting Publications. 2017;14(12):e15121E. 3. Kenney EL, Long MW, Cradock AL, Gortmaker SL. Prevalence of Inadequate Hydration Among US Children and Disparities by Gender and Race/Ethnicity: National Health and Nutrition Examination Survey, 2009–2012. American Journal of Public Health. 2015;105(8):e113-e118. 4. Malisova O, Athanasatou A, Pepa A, et al. Water Intake and Hydration Indices in Healthy Europ

For All Spaces: Option 1: Drinking water quality report The following requirements are met: a. The following water parameters are sampled at intervals of no less than once per year: 1. Turbidity. 2. pH. 3. Residual (free) chlorine. 4. Total coliforms, only if residual chlorine is below detection limits. 5. Any other water parameter found at 80% or above its threshold listed in W02 Part 1, as stated in the Final WELL Report or in subsequent annual sampling. Testing occurs only at the locations where parameters were found to be at 80% or above its threshold and testing takes place at least annually until the sample is below 80% of the threshold. b. The number and location of sampling points for on-going monitoring complies with the requirements outlined in the Performance Verification Guidebook. c. The water quality results are submitted annually through the WELL digital platform. WELL Core Guidance: Meet these requirements in non-leased spaces.

For All Spaces: Option 1: Legionella plan development The project provides a Legionella management plan that meets the following requirements: a. Addresses hot water systems, cooling towers, decorative fountains and any other devices or spaces under control of the project where water is recirculated and aerosolized. b. Includes the items listed below:3 1. Determination of roles for Legionella management in the building, distinguishing those under project control from those that may be the responsibility of building management or other parties. 2. Water system inventory and process flow diagrams of systems within the project boundary. 3. Hazard analysis of water assets within the project boundary. If the project does not operate the building hot water supply system (e.g., boilers, heaters, pumps or hot water risers), then an explanation of the building- wide Legionella management policies (if any) and how they influence risk is included. 4. A list of monitoring actions for relevant variables (e.g., temperature or residual chlorine), performance limits associated with these variables, and corrective actions when variables exceed such limits. 5. A list of critical control points (locations where actions to maintain relevant variables listed in (4) within performance limits are applied) within the project boundary. 6. Verification and validation procedures for evaluating the suitability and proper implementation of the management plan. A Legionella sampling schedule is included if projects have operational control over cooling towers and spas. 7. Protocols for documenting results of monitoring activities and corrective actions. If sampling for Legionella is planned, results are included. Option 2: Legionella plan implementation The following requirement is met: a. Project submits annually through the WELL digital platform documentation of monitoring results, corrective actions and Legionella sample results (if any) as stated in the Legionella management plan. WELL Core Guidance: Meet these requirements in the whole building. References 1. Institute of Medicine. Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate. Washington, DC: The National Academies Press; 2005. 2. European Food Safety Authority. Dietary Reference Values for nutrients Summary report. EFSA Supporting Publications. 2017;14(12):e15121E. 3. Kenney EL, Long MW, Cradock AL, Gortmaker SL. Prevalence of Inadequate Hydration Among US Children and Disparities by Gender and Race/Ethnicity: National Health and Nutrition Examination Survey, 2009–2012. American Journal of Public Health. 2015;105(8):e113-e118. 4. Malisova O, Athanasatou A, Pepa A, et al. Water Intake and Hydration Indices in Healthy European Adults: The European Hydration Research Study (EHRS). Nutrients. 2016;8(4). 5. Sui Z, Zheng M, Zhang M, Rangan A. Water and Beverage Consumption: Analysis of the Australian 2011-2012 National Nutrition and Physical Acti

WELL Certification: 1 Pt | WELL Core: 2 Pt For All Spaces: Water delivered to the project for human consumption meets the following thresholds: a. Aluminum ≤ 0.2 mg/L.2 b. Chloride ≤ 250 mg/L.2 c. Copper ≤ 1 mg/L.2 d. Manganese ≤ 0.05 mg/L. e. Iron ≤ 0.3 mg/L.2 f. Silver≤ 0.1 mg/L.2 g. Sodium ≤ 270 mg/L.3 h. Sulfate ≤ 250 mg/L.2 i. Sulfide ≤ 0.05 mg/L.3 j. Zinc ≤5 mg/L.2 k. Total Dissolved Solids (TDS) ≤ 500 mg/L.2 l. Free Chlorine ≤ 1.25 mg/L.4 WELL Core Guidance: Meet these requirements in the whole building. Water will be sampled from non-leased spaces and the project must either: 1. Confirm that the same water treatment system (if applicable) will be used in all leased spaces. 2. Provide an allowance to tenants to purchase the same type of treatment system (if applicable) in leased spaces. If there is no water supply in non-leased spaces, water will be sampled from leased spaces. References 1. Institute of Medicine. Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate. Washington, DC: The National Academies Press; 2005. 2. European Food Safety Authority. Dietary Reference Values for nutrients Summary report. EFSA Supporting Publications. 2017;14(12):e15121E. 3. Kenney EL, Long MW, Cradock AL, Gortmaker SL. Prevalence of Inadequate Hydration Among US Children and Disparities by Gender and Race/Ethnicity: National Health and Nutrition Examination Survey, 2009–2012. American Journal of Public Health. 2015;105(8):e113-e118. 4. Malisova O, Athanasatou A, Pepa A, et al. Water Intake and Hydration Indices in Healthy European Adults: The European Hydration Research Study (EHRS). Nutrients. 2016;8(4). 5. Sui Z, Zheng M, Zhang M, Rangan A. Water and Beverage Consumption: Analysis of the Australian 2011-2012 National Nutrition and Physical Activity Survey. Nutrients. 2016;8(11). 6. Onufrak SJ, Park S, Sharkey JR, Sherry B. The relationship of perceptions of tap water safety with intake of sugar- sweetened beverages and plain water among US adults. Public Health Nutrition. 2014;17(1):179-185. 7. US Centers for Disease Control & Prevention. Ten Great Public Health Achievements—United States, 1900-1999. JAMA. 1999;281(16):1481-1481. 8. World Health Organization. Guidelines for drinking-water quality. 4th ed. Geneva, Switzerland: WHO Press; 2017. 9. World Health Organization. Trihalomethanes in Drinking-water. Geneva, Switzerland2005. 10. US Centers for Disease Control & Prevention. Legionella (Legionnaires' Disease and Pontiac Fever). https://www.cdc.gov/legionella/index.html. Published 2019. Updated April 30, 2018. Accessed December 20, 2019. 11. World Health Organization. WHO guidelines for indoor air quality: dampness and mould. 2009. 12. UNICEF. Water, Sanitation and Hygiene. https://www.unicef.org/wash/. Published 2016. Accessed June 6, 2020. 13. Luby SP, Agboatwalla M, Painter J, Altaf A, Billhimer WL, Hoekstra RM. Effect of intensive handwashing promotion on childhood diarrhea in high-risk communities in Pakistan: a randomized controlled trial. JAMA. 20

WELL Certification: 2 Pt | WELL Core: 2 Pt For All Spaces: Option 1: Water quality pre-test For first-time registered projects, the following requirements are met: a. The project pre-tests water at least one month before Performance Verification for the parameters below: 1. Turbidity. 2. Coliforms. 3. pH. 4. Total Dissolved Solids (TDS). 5. Total Chlorine. 6. Residual (free) chlorine. 7. Arsenic. 8. Lead. 9. Copper. 10. Nitrate 11. Benzene. b. Sampling occurs at the following locations (with filters or other water treatment devices removed, if present): 1. The water dispenser that is closest to the pipe that delivers water into the project. 2. For projects with more than two floors, a drinking water dispenser on the highest floor and the drinking water dispenser located farthest from the location in requirement b(1) above to which the project has access. 3. For projects of 12 or more floors, one additional drinking water dispenser for every 10 floors. Note: Projects under re-certification do not need to pre-test water in order to achieve this Part. Option 2: Water quality monitoring The following requirements are met: a. Piped water is delivered to drinking water dispensers. b. Water is tested quarterly in drinking water dispensers and meets the following thresholds. If any sample exceeds these thresholds, remediation and re-testing occur within a month: 1. Turbidity is 1.0 NTU, FTU or FNU or less. 2. pH is between 6.5 and 9.0 (between 5.5 and 9 if a reverse osmosis system is installed at the point of use). 3. Total Dissolved Solids (TDS) are 500 mg/L or less. 4. Total Chlorine is 5 mg/L or less. 5. Residual (free) Chlorine is 5 mg/L or less. 6. Total Coliforms are not detected in a 100 ml sample. Testing is required only if residual chlorine is not detected. 7. Lead is 10 µg/L or less. Sampling frequency can be reduced to once per year if results are below detection limits in two consecutive samples. 8. Copper is 2 mg/L or less. Sampling frequency can be reduced to twice a year if results are below 0.1 mg/L in two consecutive samples; testing is no longer required if four consecutive samples are below this threshold. c. The number and location of sampling points for on-going monitoring complies with the requirements outlined in the Performance Verification Guidebook. d. All test results are submitted annually through the WELL digital platform. WELL Core Guidance: Meet these requirements in the whole building. Project may sample water from non-leased spaces and either: 1. Confirm that the same water treatment system (if applicable) will be used in leased spaces 2. Provide an allowance to tenants to purchase the same type of treatment system (if applicable) in leased spaces. If the non-leased spaces have no water supplies, project must sample water from leased area.

WELL Certification: 1 Pt | WELL Core: 1 Pt For All Spaces: The following information is prominently displayed near sources of drinking water (or on a website available to occupants): a. Water quality results from the most recent sampling, including date of testing and compliance with WELL thresholds. b. If filters or other treatment units are in use, information about the treatment technologies and most recent date of device maintenance and/or filter cartridge replacement. WELL Core Guidance: Meet these requirements in non-leased spaces. Data displays must be placed in tenant-accessible areas or otherwise be made available to tenants.Meet these requirements in non-leased spaces. Data displays must be placed in tenant-accessible areas or otherwise be made available to tenants. References 1. Institute of Medicine. Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate. Washington, DC: The National Academies Press; 2005. 2. European Food Safety Authority. Dietary Reference Values for nutrients Summary report. EFSA Supporting Publications. 2017;14(12):e15121E. 3. Kenney EL, Long MW, Cradock AL, Gortmaker SL. Prevalence of Inadequate Hydration Among US Children and Disparities by Gender and Race/Ethnicity: National Health and Nutrition Examination Survey, 2009–2012. American Journal of Public Health. 2015;105(8):e113-e118. 4. Malisova O, Athanasatou A, Pepa A, et al. Water Intake and Hydration Indices in Healthy European Adults: The European Hydration Research Study (EHRS). Nutrients. 2016;8(4). 5. Sui Z, Zheng M, Zhang M, Rangan A. Water and Beverage Consumption: Analysis of the Australian 2011-2012 National Nutrition and Physical Activity Survey. Nutrients. 2016;8(11). 6. Onufrak SJ, Park S, Sharkey JR, Sherry B. The relationship of perceptions of tap water safety with intake of sugar- sweetened beverages and plain water among US adults. Public Health Nutrition. 2014;17(1):179-185. 7. US Centers for Disease Control & Prevention. Ten Great Public Health Achievements—United States, 1900-1999. JAMA. 1999;281(16):1481-1481. 8. World Health Organization. Guidelines for drinking-water quality. 4th ed. Geneva, Switzerland: WHO Press; 2017. 9. World Health Organization. Trihalomethanes in Drinking-water. Geneva, Switzerland2005. 10. US Centers for Disease Control & Prevention. Legionella (Legionnaires' Disease and Pontiac Fever). https://www.cdc.gov/legionella/index.html. Published 2019. Updated April 30, 2018. Accessed December 20, 2019. 11. World Health Organization. WHO guidelines for indoor air quality: dampness and mould. 2009. 12. UNICEF. Water, Sanitation and Hygiene. https://www.unicef.org/wash/. Published 2016. Accessed June 6, 2020. 13. Luby SP, Agboatwalla M, Painter J, Altaf A, Billhimer WL, Hoekstra RM. Effect of intensive handwashing promotion on childhood diarrhea in high-risk communities in Pakistan: a randomized controlled trial. JAMA. 2004;291(21):2547-2554. 14. World Health Organization. Coronavirus disease (COVID-19) advice for the public. https://www.who.int/emergencies/d

WELL Certification: 1 Pt | WELL Core: 1 Pt For All Spaces except Dwelling Units: Option 1: Dispenser availability The following requirements are met: a. At least one drinking water dispenser (minimum one per floor) is located within a 100 ft(30 m) walk distance of all regularly occupied floor area and in all dining areas. b. Water delivered by the dispensers is directly piped through the building’s water supply or is stored in containers designed for refilling. c. All newly installed drinking water fountains are designed for water bottle-refilling. Option 2: Dispenser maintenance All drinking water dispensers meet the following requirement: a. The mouthpieces/outlets, protective guards, aerators (if present), basins and touch points are cleaned on a daily basis. WELL Core Guidance: Meet these requirements in the whole building. For each 900 m² [10,000 ft²] of leased spaces, projects may provide one water supply and drainage point that can be connected to a drinking water dispenser. References 1. Institute of Medicine. Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate. Washington, DC: The National Academies Press; 2005. 2. European Food Safety Authority. Dietary Reference Values for nutrients Summary report. EFSA Supporting Publications. 2017;14(12):e15121E. 3. Kenney EL, Long MW, Cradock AL, Gortmaker SL. Prevalence of Inadequate Hydration Among US Children and Disparities by Gender and Race/Ethnicity: National Health and Nutrition Examination Survey, 2009–2012. American Journal of Public Health. 2015;105(8):e113-e118. 4. Malisova O, Athanasatou A, Pepa A, et al. Water Intake and Hydration Indices in Healthy European Adults: The European Hydration Research Study (EHRS). Nutrients. 2016;8(4). 5. Sui Z, Zheng M, Zhang M, Rangan A. Water and Beverage Consumption: Analysis of the Australian 2011-2012 National Nutrition and Physical Activity Survey. Nutrients. 2016;8(11). 6. Onufrak SJ, Park S, Sharkey JR, Sherry B. The relationship of perceptions of tap water safety with intake of sugar- sweetened beverages and plain water among US adults. Public Health Nutrition. 2014;17(1):179-185. 7. US Centers for Disease Control & Prevention. Ten Great Public Health Achievements—United States, 1900-1999. JAMA. 1999;281(16):1481-1481. 8. World Health Organization. Guidelines for drinking-water quality. 4th ed. Geneva, Switzerland: WHO Press; 2017. 9. World Health Organization. Trihalomethanes in Drinking-water. Geneva, Switzerland2005. 10. US Centers for Disease Control & Prevention. Legionella (Legionnaires' Disease and Pontiac Fever). https://www.cdc.gov/legionella/index.html. Published 2019. Updated April 30, 2018. Accessed December 20, 2019. 11. World Health Organization. WHO guidelines for indoor air quality: dampness and mould. 2009. 12. UNICEF. Water, Sanitation and Hygiene. https://www.unicef.org/wash/. Published 2016. Accessed June 6, 2020. 13. Luby SP, Agboatwalla M, Painter J, Altaf A, Billhimer WL, Hoekstra RM. Effect of intensive handwashing promotion on childhood diarrhea in high-risk

WELL Certification: 1 Pt | WELL Core: 2 Pt For All Spaces: The building envelope aims to minimize moisture intrusion and accumulation through the following:3 a. For a project where construction occurs after registration, verification of site drainage and storm water management during building construction phase. b. Air tightness testing to assess water vapor transfer. c. Adverse vapor pressure differentials that may cause condensation on interstitially hidden materials. d. Entryway design that considers at least three strategies to minimize the ingress or permeation of water into the building. e. Installation of a continuous drainage plane (e.g., a weather-resistant barrier integrated with flashing systems at penetrations), interior to the exterior cladding. f. Minimization of capillary suction (wicking) in porous building materials through one of the below capillary break methods: 1. Free-draining spaces (e.g., between exterior cladding, weather-resistant barriers in wall assemblies). 2. Non-porous materials (e.g., closed-cell foams, waterproofing membranes, metal) between porous materials. WELL Core Guidance: Meet these requirements in the whole building.

WELL Certification: 1 Pt | WELL Core: 2 Pt For All Spaces: Option 1: Condensation and liquid water management The project implements measures to manage moisture in interior spaces that address, at a minimum, the following:3 a. Protection of moisture-sensitive building materials and selection of moisture-resistant materials or finishes in surfaces likely to be exposed to liquid water (e.g., finished floors) or that may absorb moisture such as interior sheathing in basements, areas at or below grade, bathrooms, janitorial rooms or kitchens. b. Condensation on cold surfaces such as basements, slab-on-grade floors, the inside of exterior walls and glazing. Option 2: Water leak control in fixtures The following requirements are met: a. All hard-piped fixtures, such as toilets, dishwashers, icemakers, water treatment devices and clothes washers, have a labeled, readily accessible single-throw manual shut-off (governed or activated per use) or automatic shut-off at point-of-connection. b. All installed water treatment devices have a waste line fixed in-place, equipped with a backflow preventor. WELL Core Guidance: Meet these requirements in the whole building. Feature requirements may be communicated within tenant lease agreements.

WELL Certification: 1 Pt | WELL Core: 2 Pt For All Spaces: Option 1: Operational moisture management The project implements a moisture management plan for building operations that contains the following: a. A schedule of periodic inspections for signs and potential sources of water damage or pooling, discoloration and mold on ceilings, walls, floors and HVAC equipment.3 b. A system or inspection protocol to periodically assess water pipe leaks. c. A system for occupants and tenants to notify building management about mold or water damage. Option 2: Leaks and mold inspections The following requirement is met: a. Results of inspections for mold and leaks (including any mold test results) are submitted annually through the WELL digital platform. WELL Core Guidance: Meet these requirements in the whole building. References 1. Institute of Medicine. Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate. Washington, DC: The National Academies Press; 2005. 2. European Food Safety Authority. Dietary Reference Values for nutrients Summary report. EFSA Supporting Publications. 2017;14(12):e15121E. 3. Kenney EL, Long MW, Cradock AL, Gortmaker SL. Prevalence of Inadequate Hydration Among US Children and Disparities by Gender and Race/Ethnicity: National Health and Nutrition Examination Survey, 2009–2012. American Journal of Public Health. 2015;105(8):e113-e118. 4. Malisova O, Athanasatou A, Pepa A, et al. Water Intake and Hydration Indices in Healthy European Adults: The European Hydration Research Study (EHRS). Nutrients. 2016;8(4). 5. Sui Z, Zheng M, Zhang M, Rangan A. Water and Beverage Consumption: Analysis of the Australian 2011-2012 National Nutrition and Physical Activity Survey. Nutrients. 2016;8(11). 6. Onufrak SJ, Park S, Sharkey JR, Sherry B. The relationship of perceptions of tap water safety with intake of sugar- sweetened beverages and plain water among US adults. Public Health Nutrition. 2014;17(1):179-185. 7. US Centers for Disease Control & Prevention. Ten Great Public Health Achievements—United States, 1900-1999. JAMA. 1999;281(16):1481-1481. 8. World Health Organization. Guidelines for drinking-water quality. 4th ed. Geneva, Switzerland: WHO Press; 2017. 9. World Health Organization. Trihalomethanes in Drinking-water. Geneva, Switzerland2005. 10. US Centers for Disease Control & Prevention. Legionella (Legionnaires' Disease and Pontiac Fever). https://www.cdc.gov/legionella/index.html. Published 2019. Updated April 30, 2018. Accessed December 20, 2019. 11. World Health Organization. WHO guidelines for indoor air quality: dampness and mould. 2009. 12. UNICEF. Water, Sanitation and Hygiene. https://www.unicef.org/wash/. Published 2016. Accessed June 6, 2020. 13. Luby SP, Agboatwalla M, Painter J, Altaf A, Billhimer WL, Hoekstra RM. Effect of intensive handwashing promotion on childhood diarrhea in high-risk communities in Pakistan: a randomized controlled trial. JAMA. 2004;291(21):2547-2554. 14. World Health Organization. Coronavirus disease (COVID-19) advice for the public.

WELL Certification: 2 Pt | WELL Core: 2 Pt For All Spaces except Dwelling Units: Option 1: Bathroom Accommodations The following requirements are met: a. All bathrooms meet the following requirements: 1. Provide trash receptacles in stalls (in women’s and single-user bathrooms). If toilet paper cannot be flushed down toilets, trash receptacles must be placed in all bathroom stalls. 2. Provide sanitary pads, tampons and/or other menstrual products at no cost or subsidized by at least 50% (in women’s and single-user bathrooms). 3. Provide a hook, shelf or equivalent storage support in each toilet stall. b. All occupants have access to at least one bathroom per floor that provides an accessible stall. c. All occupants have access to at least one bathroom per floor that provides an infant changing table. d. All regular occupants may request a syringe drop box at no cost, which the project places in one or more bathrooms based on occupant demand.16 e. All single-user bathrooms (if present) are open to all individuals with accompanying signage and at minimum one single-user bathroom per floor (if present) meets the room and stall dimensions required by local accessibility code. f. Floor drains are equipped with a self-primed liquid-seal trap.17 Option 2: Family bathrooms For projects where the majority of occupants are visitors (e.g., shopping malls, airports, museums), family bathrooms are provided that meet the following requirements: a. Accommodate expected demand by individuals in need of accompaniment or assistance in the bathroom (e.g., children, individuals with mental or physical disabilities).18 b. Contain the following accommodations: 1. Changing table for infants. 2. Children’s toilet facilities or accommodations for child use of adult size toilet. 3. Children’s sinks or accommodations for child use of adult size sink (e.g., availability of stepstool). 4. Motion sensor lights. 5. Skid resistant floors. 6. Safety grab bars. 7. At least one designated location for bags (e.g., hook, shelf separate from changing table and sink). Option 3: Handwashing support The project provides, at minimum, the following in all sinks where handwashing is expected (e.g., bathrooms, break rooms and wellness rooms): a. Fragrance-free liquid hand soap dispensed through one of the following: 1. Sealed dispensers equipped with disposable soap cartridges. 2. Dispensers with detachable and closed containers for soap refill. Soap containers must be washed and disinfected when emptied, before refilling. b. One of the following methods for hand drying: 1. Paper towels. 2. Hand dryers equipped with a HEPA filter. Filter replacement and equipment maintenance are carried out per manufacturer’s instructions. This method is not available for healthcare projects. 3. Fabric hand towel rolls with dispensers, with rolls replaced before reaching their end of service. c. Signage displaying steps for p

WELL Certification: 1 Pt | WELL Core: 1 Pt For All Spaces except Dwelling Units: All bathrooms meet the following: a. Toilets are equipped with hands-free flushing. b. Contactless soap dispensers and hand drying. c. Users can exit the bathroom hands-free. d. Faucets meet the following: 1. Sensor-activated. 2. Equipped with a programmable line-purge system. 3. If mixing is used, hot- and cold-water lines are mixed at the point of use. WELL Core Guidance: Meet these requirements for the extent of developer buildout.

WELL Certification: 1 Pt | WELL Core: 1 Pt For All Spaces: All sinks where handwashing is expected (e.g., kitchens, bathrooms, break rooms and wellness rooms), meet the following requirements: a. The faucet design prevents the water column from flowing directly into the drain or a sink drain stopper is installed.6,19 b. Water does not splash outside the sink when the faucet is fully open. c. Newly installed sinks meet the following design parameters: 1. The sink basin is at least 9 inches(23 cm) in width and length. 2. The water column from the sink to the basin is at least 6 inches(15 cm) in length (measured along flow of water, even if at an angle). 3. The water column is at least 3 inches(7.5 cm) away from any edge of the sink. WELL Core Guidance: Meet these requirements for the extent of developer buildout. References 1. Institute of Medicine. Dietary Reference Intakes for Water, Potassium, Sodium, Chloride, and Sulfate. Washington, DC: The National Academies Press; 2005. 2. European Food Safety Authority. Dietary Reference Values for nutrients Summary report. EFSA Supporting Publications. 2017;14(12):e15121E. 3. Kenney EL, Long MW, Cradock AL, Gortmaker SL. Prevalence of Inadequate Hydration Among US Children and Disparities by Gender and Race/Ethnicity: National Health and Nutrition Examination Survey, 2009–2012. American Journal of Public Health. 2015;105(8):e113-e118. 4. Malisova O, Athanasatou A, Pepa A, et al. Water Intake and Hydration Indices in Healthy European Adults: The European Hydration Research Study (EHRS). Nutrients. 2016;8(4). 5. Sui Z, Zheng M, Zhang M, Rangan A. Water and Beverage Consumption: Analysis of the Australian 2011-2012 National Nutrition and Physical Activity Survey. Nutrients. 2016;8(11). 6. Onufrak SJ, Park S, Sharkey JR, Sherry B. The relationship of perceptions of tap water safety with intake of sugar- sweetened beverages and plain water among US adults. Public Health Nutrition. 2014;17(1):179-185. 7. US Centers for Disease Control & Prevention. Ten Great Public Health Achievements—United States, 1900-1999. JAMA. 1999;281(16):1481-1481. 8. World Health Organization. Guidelines for drinking-water quality. 4th ed. Geneva, Switzerland: WHO Press; 2017. 9. World Health Organization. Trihalomethanes in Drinking-water. Geneva, Switzerland2005. 10. US Centers for Disease Control & Prevention. Legionella (Legionnaires' Disease and Pontiac Fever). https://www.cdc.gov/legionella/index.html. Published 2019. Updated April 30, 2018. Accessed December 20, 2019. 11. World Health Organization. WHO guidelines for indoor air quality: dampness and mould. 2009. 12. UNICEF. Water, Sanitation and Hygiene. https://www.unicef.org/wash/. Published 2016. Accessed June 6, 2020. 13. Luby SP, Agboatwalla M, Painter J, Altaf A, Billhimer WL, Hoekstra RM. Effect of intensive handwashing promotion on childhood diarrhea in high-risk communities in Pakistan: a randomized controlled trial. JAMA. 2004;291(21):2547-2554. 14. World Health Organization. Coronavirus disease (CO

WELL Certification: 2 Pt | WELL Core: 2 Pt For All Spaces: The following requirements are met: a. The project implements a safety plan that contains the following: 1. A list of key team roles for design, operations, maintenance and third-party inspection of the non-potable water system capture, treatment and use. 2. A list of all applicable codes and regulations in the jurisdiction where the non-potable water reuse system is being installed and that govern the design, commissioning, and approval of operation of the system. 3. A process flow diagram that displays the non-potable water sources, conveyances, storage units, treatment devices and points of use, emphasizing the points where makeup potable water (i.e., water needed to supplement non-potable needs) may be added. 4. A description of the system that includes the sources and estimated contaminant loads of the non-potable water, the intended uses for the non-potable water, the water treatment devices (if any) and their certifications, and the water quality parameters expected at the points of use. 5. An analysis of how human exposure to pathogens through ingestion and inhalation of non-potable water is minimized, including (if applicable) a description of how the potable water network is protected from the introduction of non-potable water, emphasizing strategies that address cross-connection control and backflow prevention. 6. A description of the signage and identifiable pipe color-coding to distinguish the non-potable water network. 7. A list of strategies for the control of odors, nuisances and vectors due to stagnation of non-potable water. 8. A narrative that details provisions for emergency operations caused by overflow of storage tanks, leaks and outages. 9. A list of operational parameters (such as flow, turbidity, coliforms or other treatment-dependent indicators) to monitor the intended functioning of the water system, their monitoring frequency and control actions if such parameters are beyond target ranges. 10. A list of control points where the operational parameters are being measured. 11. A list of routine maintenance protocols and schedules. 12. A description of the procedures for system startup, determination of protocols for verification of the safety plan, including Legionella testing if a risk of inhalation exists, and schedule for third-party inspections. b. Projects submit annually through the WELL digital platform documentation of the startup procedure, maintenance logs, results from verification tests (when applicable) and of third-party inspections. c. Projects provide visual evidence of conspicuous signage to occupants to help them to clearly distinguish potable from non-potable water (where applicable) as well as informative displays to highlight the safety features and conservation goals of the non-potable water system. Note: Projects are