This is a legacy version of the WELL Building Standard. Please check the latest version here.

Inorganic contaminants

Many dissolved metals that contaminate water supplies can be acutely or chronically toxic. Contamination varies widely by geographic location and water source, spurring the need for localized testing. Exposure to even small amounts of inorganic contaminants such as lead, mercury and arsenic have been linked to the development of various cancers, neurological damage and other adverse health effects.

This feature sets maximum safety limits for several inorganic contaminants in drinking water. If necessary, reverse osmosis (RO) systems or Kinetic Degradation Fluxion (KDF) filters can remove dissolved metals.

Part 1: Organic Chemical Removal

Water from all faucets, drinking fountains, showers and baths is treated with the following:

a.187 Activated carbon filter.
Reproductive
Digestive
Nervous
Cardiovascular
Urinary

Applicability Matrix

Core & Shell Tenant Improvement New Construction
Part 1: Organic Chemical Removal O O O
Commercial Kitchen Schools Multifamily Residential Restaurant Retail
Part 1: Organic Chemical Removal O O O O O

Verification Methods Matrix

Letters of Assurance Annotated Documents On-Site Checks
PART 1 (Design)
Organic Chemical Removal
MEP Spot Check
43

Office of Environmental Health Hazard Assessment. Public Health Goal for Nickel in Drinking Water. Sacramento: California Environmental Protection Agency; 2010: 1.

31.1.e

The California Office of Environmental Health Hazard Assessment and the California EPA set a public health goal for Nickel in drinking water at 0.012 mg/L.

53

World Health Organization. Guidelines for Drinking-water Quality Fourth Edition. Geneva: World Health Organization; 2011: 26, 371, 383, 416, 433.

31.1.a

The WHO Guidelines for Drinking Water Quality note a provisional guideline value of 0.01 mg/L for Lead concentrations.

54

Office of Water. 2012 Edition of the Drinking Water Standards and Health Advisories. Washington D.C.: U.S. Environmental Protection Agency; 2012: 2, 3, 5-11.

31.1.f

The EPA Secondary Drinking Water Regulations set a secondary Maximum Contaminant Level for Copper concentrations at 1.0 mg/L.

31.1.b

The EPA's Drinking Water Standards and Health Advisories set a Maximum Contaminant Level for Arsenic concentrations at 0.01 mg/L.

31.1.c

The EPA's Drinking Water Standards and Health Advisories set a Maximum Contaminant Level for Antimony concentrations at 0.006 mg/L.

31.1.d

The EPA's Drinking Water Standards and Health Advisories set a Maximum Contaminant Level for Mercury (inorganic) concentrations at 0.002 mg/L.