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Water


Intent: The WELL Water concept covers aspects of the quality, distribution and control of liquid water in a building. It includes features that address the availability and contaminant thresholds of drinking water, as well as features targeting the management of water to avoid damage to building materials and environmental conditions.

 

WKU Points Achieved in the Water Feature


 

Intent: Limit the presence of sediment and water-borne bacteria levels in water for human contact.

This WELL feature requires the provision of water that meets thresholds for turbidity and coliforms for drinking and other uses likely to come in contact with building occupants and verifies performance using on-site tests.

  • Sediment Thresholds: Turbidity less than or equal to 1.0 NTU
  • Microorganisms Thresholds Contains 0 CFU / 100 mL total coliforms (including E. coli).
  • Monitor Fundamental Water Parameters: The threshold levels of the water contaminants listed in this feature, as reported in a local municipal water quality report, are submitted annually through WELL Online.

Intent: Provide access to drinking water that complies with health-based limits on contaminants.

This WELL feature requires projects provide drinking water that meets thresholds on contaminants based on thresholds published by national and international research and regulatory groups and verifies performance using on-site tests

  • Dissolved Metal Thresholds:  Lead less than 0.01 mg/L; Arsenic less than 0.01 mg/L; Antimony less than 0.006 mg/L; Mercury less than 0.002 mg/L; Nickel less than 0.07 mg/L; Copper less than 1.0 mg/L; Cadmium less than 0.005 mg/L; Chromium (total) less than 0.1 mg/L
  • Organic Pollutant Thresholds:  thresholds:  Styrene less than 0.02 mg/L; Benzene less than 0.005 mg/L; Ethylbenzene less than 0.3 mg/L; Vinyl chloride less than 0.002 mg/L;Toluene less than 0.7 mg/L; Xylenes (total: m, p and o) less than 0.5 mg/L; Tetrachloroethylene less than 0.005 mg/L
  • Disinfectant Byproduct Thresholds: Total trihalomethanes (sum of dibromochloromethane, bromodichloromethane, chloroform and bromoform) less than 0.08 mg/L;Total haloacetic acids (sum of chloroacetic, dichloracetic, trichloracetic, bromoacetic and dibromoacetic acids) less than 0.06 mg/L
  • Herbicide and Pesticide Thresholds: Atrazine less than 0.003 mg/L; Simazine less than 0.002 mg/L; 2,4-Dichlorophenoxyacetic acid less than 0.07 mg/
  • Fertilizer Thresholds: Nitrate less than 50 mg/L (11 mg/L as nitrogen).[12]   
  • Public Water Additive Thresholds: Fluoride less than 4 mg/L; Total chlorine less than 4 mg/L; Chloramine less than 4 mg/L.[19]
  • Monitor Contaminant Water Parameters: The threshold levels of the water contaminants listed in this feature, as reported in a local municipal water quality report, are submitted annually through WELL Online.

Intent: Establish an effective management program that prevents or adequately controls the risk of exposure to Legionella bacteria.

This WELL feature requires projects to analyze their facilities for risk of Legionella and set up teams and response processes to manage concerns.

  • A narrative describes how the building addresses Legionella, and includes the following:
  • Formation of a team for Legionella management in the building.
  • Water system inventory and production of process flow diagrams.
  • Hazard analysis of water assets.
  • Identification of critical control points.   
  • Maintenance and control measures, monitoring, establishment of performance limits and corrective actions.
  • Documentation, verification and validation procedures

Intent: Limit the potential for bacteria and mold growth within buildings from water infiltration and condensation.

This WELL feature requires projects to implement techniques to minimize the presence of unintentional water and, when unavoidable, to manage it through material selection.

  • Manage Exterior Liquid Water
    1. A continuous drainage plane (e.g., a weather-resistant barrier integrated with flashing systems at penetrations) is constructed interior to the exterior cladding.
    2. To prevent the wicking of porous building materials, one of the below capillary break methods is used:  Free-draining spaces (e.g., between exterior cladding, weather-resistant barriers in wall assemblies);  Non-porous materials (e.g., closed-cell foams, waterproofing membranes, metal) between porous materials.

  • Isolate Moisture-sensitive Materials  narrative describes how moisture-tolerant materials have been selected and/or moisture-sensitive materials are being protected, considering the following:
    1. A narrative describes how moisture-tolerant materials have been selected and/or moisture-sensitive materials are being protected, considering the following:
    2. Exposed entryways and glazing.[41]
    3. Porous cladding materials.[41]
    4. Finished floors and interior sheathing in basements, bathrooms, kitchens and high-humidity spaces.[41]

Intent: Reduce pathogen transmission associated with washing and drying hands.

This WELL feature requires p This WELL feature requires sufficiently large sinks, disposable soap containers and hand drying towels. 

  • At all sink locations, the following are provided:  Fragrance-free hand soap placed in dispensers with disposable and sealed soap cartridges.  Paper towels for hand drying.

 


 

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 Last Modified 12/13/18