Water treatment
36. Water treatment
There are many types of contaminants that may compromise water quality, from pathogens and heavy metals to pesticides. While routine testing helps to keep track of potential contaminants, reliance on sampling alone cannot guarantee the elimination of all risk. Droughts, disruptions to water supply, flooding, construction and changes in infrastructure can temporarily affect water quality.
This feature prescribes technologies designed to maintain high water quality irrespective of variations to the water supply through the provisioning of various precautionary filtration and sterilization processes. Options include carbon filters, sediment filters and UV sanitization.
Water from all faucets, drinking fountains, showers and baths is treated with the following:
To encourage water consumption, the following is met:
Water from all faucets, drinking fountains, showers and baths is treated with one of the following:
To verify that the selected filtration/sanitation system chosen continues to operate as designed, projects must annually provide IWBI with:
Applicability Matrix
| Core & Shell | Tenant Improvement | New Construction | |
|---|---|---|---|
| Part 2: Sediment Filter | O | O | O |
| Part 2: Drinking Water Access | - | O | O |
| Part 3: Microbial Elimination | O | O | O |
| Part 4: Water Quality Maintenance | O | O | O |
| Commercial Kitchen | Schools | Multifamily Residential | Restaurant | Retail | |
|---|---|---|---|---|---|
| Part 2: Sediment Filter | O | O | O | O | O |
| Part 2: Drinking Water Access | - | O | - | O | O |
| Part 3: Microbial Elimination | O | O | O | O | O |
| Part 4: Water Quality Maintenance | O | O | O | O | O |
Verification Methods Matrix
| Letters of Assurance | Annotated Documents | On-Site Checks | |
|---|---|---|---|
|
PART 2 (Design) Drinking Water Access |
Architect | Spot Check | |
|
PART 2 (Design) Sediment Filter |
MEP | Spot Check | |
|
PART 3 (Design) Microbial Elimination |
MEP | Spot Check | |
|
PART 4 (Design) Water Quality Maintenance |
Operations Schedule |
| 36.5.a |
ASHRAE's proposed Hazard Analysis and Critical Control Point Plan requires the development of a team comprised of members who understand the building's water systems and the principles of the plan. |
| 36.5.b |
ASHRAE's proposed Hazard Analysis and Critical Control Point Plan requires teams to develop at least two process flow diagrams mapping the receipt, processing and delivery of water to occupants. |
| 36.5.c |
ASHRAE's proposed Hazard Analysis and Critical Control Point plan for preventing building associated legionellosis includes conducting a hazard analysis. |
| 36.5.d |
ASHRAE's proposed Hazard Analysis ad Critical Control Point plan includes identifying critical control points. |
| 36.5.e |
ASHRAE's Hazard Analysis and Critical Control Point plan for preventing building associated legionellosis includes monitoring identified control points and establishing procedures for corrective measures. |
| 36.5.f |
ASHRAE's proposed Hazard Analysis and Critical Control Point plan for preventing building-associated legionellosis includes establishing documentation and verification procedures. |
| 36.1.a |
The Minnesota Department of Health notes that "A filter with granular activated carbon (GAC) is a proven option to remove certain chemicals, particularly organic chemicals, from water". |
| 36.3.a |
The US EPA's Alternative Disinfectants and Oxidants Guidance Manual notes that the optimum UV range is between 245 and 285 nm, which corresponds to UV-C radiation (200-280 nm). |