{"id":18344,"feature_order":2,"feature_code":null,"name":"Drinking Water Quality","type":"P","intent":"

Provide access to drinking water that complies with\r\nhealth-based limits on chemical composition.<\/o:p><\/p>","intervention":"This WELL feature requires projects to provide\r\ndrinking water that meets thresholds on chemicals as published by research and\r\nregulatory organizations.","issue":"

The chemical composition of drinking water, and therefore,\r\nits quality, changes from city to city and even within buildings due to the\r\nhighly variable conditions of its sourcing, treatment and distribution within\r\ncities and inside buildings.1<\/sup> For\r\nexample, natural deposits have caused arsenic to leach into some groundwaters to\r\nreach levels above drinking water health guidelines.2<\/sup> Water streams can also pick up contaminants from\r\nagricultural runoffs and direct industrial discharges,3<\/sup> whereas drinking water may encounter many opportunities\r\nto pick up contaminants in its travel from a treatment plant to the point of\r\nuse, including corrosion byproducts such as lead and copper.1<\/sup> Disinfectants used to prevent microbial growth and\r\nrender water potable, such as chlorine, may react with natural organic matter\r\nand yield unwanted disinfectant byproducts (DBPs) such as trihalomethanes\r\n(THMs) and haloacetic acids (HAAs), to which chronic exposure needs to be\r\nminimized.4<\/sup><\/o:p><\/p>","evidence":"Drinking water is treated and distributed to\r\nmeet applicable legal requirements and regulations that may differ by country,5<\/sup> and many building-scale interventions can\r\nimprove water quality depending on the contaminants that need\r\nto be removed. Typical technologies able to capture contaminants include activated\r\ncarbon filters, ion exchange resins and reverse osmosis (RO) systems.\r\nEvaluating chemical parameters such as pH and free\r\nchlorine may inform of the potential for the uptake of corrosion byproducts\r\nand\/or bacterial growth in drinking water.1<\/sup>   
","implementation":"","impact":"","max_points":0,"concept_id":1735,"slug":"drinking-water-quality-1","gbd_exists":null,"review_summary":null,"citations":"

  1. World Health Organization. Guidelines for drinking-water quality. 4th ed. Geneva, Switzerland: WHO Press; 2017.<\/li>
  2. World Health Organization. Arsenic. http:\/\/www.who.int\/news-room\/fact-sheets\/detail\/arsenic. Published 2018. Accessed 2020.<\/li>
  3. U.S. Environmental Protection Agency. National primary drinking water regulations. https:\/\/www.epa.gov\/ground-water-and-drinking-water\/national-primary-drinking-water-regulations. Published 2009. Accessed January 20, 2020.<\/li>
  4. World Health Organization. Trihalomethanes in Drinking-water. Geneva, Switzerland2005.<\/li>
  5. World Health Organization. Water Safety in Buildings. Geneva, 2011.<\/li><\/ol>","deleted_at":null,"equivalency_count":8,"faq_count":3,"resource_count":0,"feature_full_name":"W02 Drinking Water Quality","feature_faq_name":"W02 Drinking Water Quality-v2","max_core_points":0,"parts":[{"id":30687,"name":"Meet Chemical Thresholds","part_number":1,"points":0,"possible_points":null,"core_points":0,"possible_core_points":null,"min_points":0,"rer_points":1,"wor_points":0,"parent_part_id":null,"feature_id":18344,"note":"","slug":"1-meet-chemical-thresholds-12","note_position_override":"top","new_core_shell":null,"existing_core_shell":null,"new_occupied":null,"existing_occupied":null,"education":null,"retail":null,"mfr":null,"others":null,"photographic_verification":null,"gbd_exists":null,"hospitality":null,"assisted_living":null,"cultural_institutions":null,"public_assembly":null,"deleted_at":null,"na_alternative":0,"na_alternative_text":null,"leed_well":0,"part_prefix":"W02.1","feature_name":"Drinking Water Quality","parent":null,"sub_parts":[{"id":32978,"condition":"AND","part_id":30687,"deleted_at":null,"space_types_included":[{"id":1,"name":"All Spaces","name_plural":"all"}],"space_types_excluded":[],"options":[{"id":41869,"option_order":1,"name":null,"description":"

    The following requirements are met:<\/p>","description_alt":null,"space_property":null,"certification":null,"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.<\/p>\r\n\r\n

    Refer to the Performance Verification Guidebook for information on sensor\/testing requirements, required testing duration and compliance calculations.<\/p>","sub_part_id":32978,"deleted_at":null,"note_position_override":"bottom","verification_note":null,"verification_condition":"AND","requirements":[{"id":120317,"option_id":41869,"requirement_order":1,"description":"

     <\/p>\r\n\r\n

    The project provides at least one drinking water dispenser, plus one drinking water dispenser per dwelling unit (if applicable).<\/p>","description_alt":null,"deleted_at":null,"photographic_verification":0},{"id":120318,"option_id":41869,"requirement_order":2,"description":"

    Drinking water dispensers provide water that meets the following parameters:1<\/sup><\/p>\r\n\r\n

      \r\n\t
    1. Arsenic ≤ 0.01 mg\/L.<\/li>\r\n\t
    2. Cadmium ≤ 0.003 mg\/L.<\/li>\r\n\t
    3. Chromium (total) ≤ 0.05 mg\/L.<\/li>\r\n\t
    4. Copper ≤ 2 mg\/L.<\/li>\r\n\t
    5. Fluoride ≤ 1.5 mg\/L.<\/li>\r\n\t
    6. Lead ≤ 0.01 mg\/L.<\/li>\r\n\t
    7. Mercury (total) ≤ 0.006 mg\/L.<\/li>\r\n\t
    8. Nickel ≤ 0.07 mg\/L.<\/li>\r\n\t
    9. Nitrate ≤ 50 mg\/L as Nitrate (11 mg\/L as Nitrogen).<\/li>\r\n\t
    10. Nitrite ≤ 3 mg\/L as Nitrite (0.9 mg\/L as Nitrogen).<\/li>\r\n\t
    11. Total chlorine ≤ 5 mg\/L.<\/li>\r\n<\/ol>","description_alt":null,"deleted_at":null,"photographic_verification":0},{"id":120319,"option_id":41869,"requirement_order":3,"description":"

      Drinking water dispensers provide water that meets the following parameters:<\/p>\r\n\r\n

        \r\n\t
      1. Residual (free) chlorine does not exceed 4 mg\/L.3<\/sup><\/li>\r\n\t
      2. The concentration of total trihalomethanes (TTHM, sum of dibromochloromethane, bromodichloromethane, chloroform and bromoform) is 0.08 mg\/L or less.3<\/sup><\/li>\r\n\t
      3. The concentration of haloacetic acids (HAA5, sum of chloroacetic, dichloroacetic, trichloroacetic, bromoacetic and dibromoacetic acids) is 0.06 mg\/L or less.3<\/sup><\/li>\r\n<\/ol>","description_alt":null,"deleted_at":null,"photographic_verification":0}],"verifications":[{"id":15,"name":"Performance Test","chinese_name":"\u6027\u80fd\u6d4b\u8bd5","is_auditable":0,"scale_type":"Individual","note":null}],"pvgbs":[{"id":932,"option_id":41869,"name":"Disinfectants","reporting_compliance":"
          \r\n\t
        • At each fixture, the average of the three samples must comply with the requirements in WELL.<\/li>\r\n<\/ul>","device_requirements":"
            \r\n\t
          • Measurement range: 0-5 mg\/L<\/li>\r\n\t
          • Reporting resolution: 0.01 mg\/L or finer<\/li>\r\n\t
          • Accuracy: ±0.02 mg\/L at 1.00 mg\/L<\/li>\r\n<\/ul>","alternative_requirements":null,"alternative_quantity":null,"quantity_override":null,"quantity_core_override":null,"recertification_override":null,"locations_override":null,"quantity_note":"
            • For each configuration of in-building water treatment, determine the total number of fixtures (as applicable) for drinking water, handwashing, showers\/baths and for cooking purposes.<\/li>
            • Of these, test at 5% (round up), with a maximum of four per configuration.<\/li>
            • Include the most distal (furthest from the main supply) outlet in the tests.<\/li><\/ul>","location_note":"
              • This parameter is tested at drinking water fixtures and water fixtures used for cooking purposes for commercial kitchens (as applicable).<\/li><\/ul>","test_method_note":"
                • Take measurements of total and free chlorine of samples by adding the appropriate reagents as specified by the chlorine meter manufacturer. \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\nTo calculate residual chloramines, subtract the free\r\nchlorine value from the total chlorine value.<\/li>
                • Repeat the process twice, for a total of three samples per water fixture tested.<\/li><\/ul>","laboratory_requirement":null},{"id":933,"option_id":41869,"name":"Lead","reporting_compliance":"
                  • The sample from every fixture tested must meet the requirements in WELL for lead.<\/li><\/ul>","device_requirements":null,"alternative_requirements":null,"alternative_quantity":null,"quantity_override":null,"quantity_core_override":null,"recertification_override":null,"locations_override":null,"quantity_note":"
                    • For each configuration of in-building water treatment, determine the total number of fixtures (as applicable) for drinking water, handwashing, showers\/baths and for cooking purposes.
                      <\/li>
                    • Of these, test at 5% (round up), with a maximum of four per configuration.<\/li>
                    • Include the most distal (furthest from the main supply) outlet in the tests.<\/li>
                    • Samples are selected with the following priority:
                      <\/li>
                    • a distal (furthest floor from the main supply, or as far as possible in single-floor projects) outlet.<\/li>
                    • a proximal (close to the main supply) outlet.<\/li><\/ul>","location_note":"
                      • This parameter is tested at drinking water fixtures and water fixtures used for cooking purposes (as applicable) for commercial kitchens.<\/li><\/ul>","test_method_note":"
                        • Appropriate sampling vials must be obtained from the laboratory prior to performance testing.<\/li>
                        • Follow all laboratory procedures for collecting and packaging the sample.<\/li><\/ul>","laboratory_requirement":null},{"id":934,"option_id":41869,"name":"Laboratory-based parameters (except lead)","reporting_compliance":"
                          • The sample from every fixture tested must meet the requirements in WELL for each of the contaminants being tested. <\/li>
                          • For Styrene samples, a \"Not Detected\" measurement with a limit of detection of .001 mg\/L is considered acceptable. 
                            <\/li><\/ul>","device_requirements":null,"alternative_requirements":null,"alternative_quantity":"

                            <\/div>","quantity_override":null,"quantity_core_override":"

                            <\/div>","recertification_override":null,"locations_override":null,"quantity_note":"
                            • For each configuration of in-building water treatment, determine the total number of fixtures (as applicable) for drinking water, handwashing, showers\/baths and for cooking purposes.<\/li>
                            • Of these, test at 5% (round up), with a maximum of two per configuration.<\/li>
                            • Include the most distal (furthest from the main supply) outlet in the tests.<\/li><\/ul>","location_note":"
                              • This parameter is tested at drinking water fixtures and water fixtures used for cooking purposes (as applicable) for commercial kitchens.<\/li><\/ul>","test_method_note":"
                                • Appropriate sampling vials must be obtained from the laboratory prior to performance testing.<\/li>
                                • Follow all laboratory procedures for collecting and packaging the sample.<\/li>
                                • Package and ship sample to third party testing laboratory per the laboratory\u2019s instructions.<\/li>
                                • This parameter is tested at drinking water fixtures and water fixtures used for cooking purposes for commercial kitchens (as applicable).<\/li><\/ul>","laboratory_requirement":null}]}]}],"on_sites":[],"annotated_documents":[],"letter_of_assurances":[],"part_guidances":[{"id":33101,"part_id":30687,"category":"WELL Core","sub_category":null,"rating_note":null,"alignment_note":null,"doc_guidance":"

                                  Meet these requirements in the whole building. Water will be sampled from non-leased spaces and the project must either:\r\n<\/p>

                                  1. Confirm that the same water treatment system (if applicable) will be used in all leased spaces.<\/li>
                                  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.<\/li><\/ol>","points":null}],"methods":[]},{"id":30692,"name":"Meet Thresholds for Organics and Pesticides","part_number":2,"points":0,"possible_points":null,"core_points":0,"possible_core_points":null,"min_points":0,"rer_points":1,"wor_points":0,"parent_part_id":null,"feature_id":18344,"note":"","slug":"2-meet-thresholds-for-organics-and-pesticides-15","note_position_override":"top","new_core_shell":null,"existing_core_shell":null,"new_occupied":null,"existing_occupied":null,"education":null,"retail":null,"mfr":null,"others":null,"photographic_verification":null,"gbd_exists":null,"hospitality":null,"assisted_living":null,"cultural_institutions":null,"public_assembly":null,"deleted_at":null,"na_alternative":0,"na_alternative_text":null,"leed_well":0,"part_prefix":"W02.2","feature_name":"Drinking Water Quality","parent":null,"sub_parts":[{"id":32983,"condition":"OR","part_id":30692,"deleted_at":null,"space_types_included":[{"id":1,"name":"All Spaces","name_plural":"all"}],"space_types_excluded":[],"options":[{"id":41874,"option_order":1,"name":"Drinking water quality report","description":"

                                    The following requirements are met:<\/p>\r\n\r\n

                                     <\/p>","description_alt":null,"space_property":null,"certification":null,"note":null,"sub_part_id":32983,"deleted_at":null,"note_position_override":"top","verification_note":"

                                    A municipal water quality report that includes a description of sample location (e.g., drinking water plant serving the facility or nearby point in the distribution system), the number of samples, the range of results (if more than one sample) and the frequency of sampling (e.g., annual, quarterly, monthly).<\/p>","verification_condition":"AND","requirements":[{"id":120335,"option_id":41874,"requirement_order":1,"description":"

                                    A municipal water quality report issued not more than one year before enrollment or the start of subscription reports on at least two of the pesticides below. All reported pesticides within the municipal water quality report comply with the following thresholds or are found to be compliant through Option 2, On-Site Testing:1<\/sup> <\/p>\r\n\r\n

                                      \r\n\t
                                    1. Aldrin and Dieldrin (combined): 0.00003 mg\/L or less.<\/li>\r\n\t
                                    2. Atrazine: 0.1 mg\/L or less.<\/li>\r\n\t
                                    3. Carbofuran: 0.007 mg\/L or less.<\/li>\r\n\t
                                    4. Chlordane: 0.0002 mg\/L or less.<\/li>\r\n\t
                                    5. 2,4-Dichlorophenoxyacetic acid (2,4-D): 0.03 mg\/L or less.<\/li>\r\n\t
                                    6. Dichlorodiphenyltrichloroethane (DDT) and metabolites: 0.001 mg\/L or less.<\/li>\r\n\t
                                    7. Lindane: 0.002 mg\/L or less.<\/li>\r\n\t
                                    8. Pentachlorophenol (PCP): 0.009 mg\/L or less.<\/li>\r\n<\/ol>","description_alt":null,"deleted_at":null,"photographic_verification":0},{"id":120336,"option_id":41874,"requirement_order":2,"description":"

                                      A municipal water quality report issued not more than one year before enrollment or the start of subscription reports on at least three of the organic contaminants below. All reported organic contaminants within the municipal water quality report comply with the following thresholds or are found compliant through Option 2, On-Site Testing:1<\/sup><\/p>\r\n\r\n

                                        \r\n\t
                                      1. Benzene: 0.01 mg\/L.<\/li>\r\n\t
                                      2. Benzo[a]pyrene: 0.0007 mg\/L.<\/li>\r\n\t
                                      3. Carbon tetrachloride: 0.004 mg\/L.<\/li>\r\n\t
                                      4. 1,2-Dichloroethane: 0.03 mg\/L.<\/li>\r\n\t
                                      5. Tetrachloroethene (Tetrachloroethylene): 0.04 mg\/L.<\/li>\r\n\t
                                      6. Toluene: 0.7 mg\/L.<\/li>\r\n\t
                                      7. Trichloroethene: 0.02 mg\/L.<\/li>\r\n\t
                                      8. 2,4,6-Trichlorophenol: 0.2 mg\/L.<\/li>\r\n\t
                                      9. Vinyl Chloride: 0.0003 mg\/L.<\/li>\r\n\t
                                      10. Xylenes (o-, m- and p-): 0.5 mg\/L.<\/li>\r\n<\/ol>","description_alt":null,"deleted_at":null,"photographic_verification":0}],"verifications":[{"id":26,"name":"Technical Document (Individual)","chinese_name":"\u6280\u672f\u6587\u6863\uff08\u5355\u4f53\uff09","is_auditable":0,"scale_type":"Individual","note":null}],"pvgbs":[]},{"id":41875,"option_order":2,"name":"On-site testing","description":"

                                        The following requirements are met:<\/p>","description_alt":null,"space_property":null,"certification":null,"note":"

                                        Refer to the Performance Verification Guidebook for information on sensor\/testing requirements, required testing duration and compliance calculations.<\/p>","sub_part_id":32983,"deleted_at":null,"note_position_override":"bottom","verification_note":null,"verification_condition":"AND","requirements":[{"id":120337,"option_id":41875,"requirement_order":1,"description":"

                                        Testing must be conducted at drinking water dispensers for at least two of the pesticides from the list below. All contaminants in the list below that are reported by the lab must comply with the following thresholds:<\/p>\r\n\r\n

                                          \r\n\t
                                        1. Aldrin and Dieldrin (combined): 0.00003 mg\/L or less.<\/li>\r\n\t
                                        2. Atrazine: 0.1 mg\/L or less.<\/li>\r\n\t
                                        3. Carbofuran: 0.007 mg\/L or less.<\/li>\r\n\t
                                        4. Chlordane: 0.0002 mg\/L or less.<\/li>\r\n\t
                                        5. 2,4-Dichlorophenoxyacetic acid (2,4-D): 0.03 mg\/L or less.<\/li>\r\n\t
                                        6. Dichlorodiphenyltrichloroethane (DDT) and metabolites: 0.001 mg\/L or less.<\/li>\r\n\t
                                        7. Lindane: 0.002 mg\/L or less.<\/li>\r\n\t
                                        8. Pentachlorophenol (PCP): 0.009 mg\/L or less.<\/li>\r\n<\/ol>","description_alt":null,"deleted_at":null,"photographic_verification":0},{"id":120338,"option_id":41875,"requirement_order":2,"description":"

                                          Testing must be conducted at drinking water dispensers for at least three of the organic contaminants from the list below. All contaminants in the list below that are reported by the lab must comply with the following thresholds:<\/p>\r\n\r\n

                                            \r\n\t
                                          1. Benzene: 0.01 mg\/L.<\/li>\r\n\t
                                          2. Benzo[a]pyrene: 0.0007 mg\/L.<\/li>\r\n\t
                                          3. Carbon tetrachloride: 0.004 mg\/L.<\/li>\r\n\t
                                          4. 1,2-Dichloroethane: 0.03 mg\/L.<\/li>\r\n\t
                                          5. Tetrachloroethene (Tetrachloroethylene): 0.04 mg\/L.<\/li>\r\n\t
                                          6. Toluene: 0.7 mg\/L.<\/li>\r\n\t
                                          7. Trichloroethene (Trichloroethylene): 0.02 mg\/L.<\/li>\r\n\t
                                          8. 2,4,6-Trichlorophenol: 0.2 mg\/L.<\/li>\r\n\t
                                          9. Vinyl Chloride: 0.0003 mg\/L.<\/li>\r\n\t
                                          10. Xylenes (o-, m- and p-): 0.5 mg\/L.<\/li>\r\n<\/ol>","description_alt":null,"deleted_at":null,"photographic_verification":0}],"verifications":[{"id":15,"name":"Performance Test","chinese_name":"\u6027\u80fd\u6d4b\u8bd5","is_auditable":0,"scale_type":"Individual","note":null}],"pvgbs":[{"id":937,"option_id":41875,"name":"Laboratory-based parameters (except lead)","reporting_compliance":"
                                            • The sample from every fixture tested must meet the requirements in WELL for each of the contaminants being tested.<\/li>
                                            • For Styrene samples, a \"Not Detected\" measurement with a limit of detection of .001 mg\/L is considered acceptable.<\/li><\/ul>","device_requirements":null,"alternative_requirements":null,"alternative_quantity":null,"quantity_override":null,"quantity_core_override":null,"recertification_override":null,"locations_override":null,"quantity_note":"
                                              • For each configuration of in-building water treatment, determine the total number of fixtures (as applicable) for drinking water, handwashing, showers\/baths and for cooking purposes.<\/li>
                                              • Of these, test at 5% (round up), with a maximum of two per configuration.<\/li>
                                              • Include the most distal (furthest from the main supply) outlet in the tests.<\/li><\/ul>","location_note":"
                                                • This parameter is tested at drinking water fixtures and water fixtures used for cooking purposes (as applicable) for commercial kitchens.<\/li><\/ul>","test_method_note":"
                                                  • Appropriate sampling vials must be obtained from the laboratory prior to performance testing.<\/li>
                                                  • Follow all laboratory procedures for collecting and packaging the sample.<\/li>
                                                  • Package and ship sample to third party testing laboratory per the laboratory\u2019s instructions.<\/li>
                                                  • This parameter is tested at drinking water fixtures and water fixtures used for cooking purposes for commercial kitchens (as applicable).<\/li><\/ul>","laboratory_requirement":null}]}]}],"on_sites":[],"annotated_documents":[],"letter_of_assurances":[],"part_guidances":[{"id":33106,"part_id":30692,"category":"WELL Core","sub_category":null,"rating_note":null,"alignment_note":null,"doc_guidance":"

                                                    Meet these requirements in the whole building. For Option 2, water will be sampled from non-leased spaces and the project must either:\r\n<\/p>

                                                    1. Confirm that the same water treatment system (if applicable) will be used in all leased spaces. <\/li>
                                                    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.<\/li><\/ol>","points":null}],"methods":[]}],"ihmes":[],"sdgs":[{"id":3,"name":"3: Good Health and Well-being","max_points":0},{"id":6,"name":"6: Clean Water and Sanitation","max_points":0}]}