Clark Addition Water System
Washington — Community Water System — PWSID: WA53AB809
System Information
| PWSID | WA53AB809 |
| System Name | Clark Addition Water System |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jun 30, 2009 |
| Last Reported | Dec 11, 2025 |
Location & Contact
| State | Washington |
| City | Pasco |
| ZIP Code | 99301 |
| Address | 3921 Ivy Rd |
| Organization | Clark Addition Water System |
| Phone | — |
Population & Service
| Population Served | 189 |
| Service Connections | 71 |
Drinking Water Violations (6)
This water system has 6 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Sep 19, 2025 | Consumer Confidence Rule |
| Jan 1, 2021 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jul 2, 2024 | Lead and Copper Rule |
| Jun 1, 2019 | Jun 30, 2019 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2019 | Revised Total Coliform Rule |
| Jul 1, 2017 | Jul 31, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jul 31, 2017 | Revised Total Coliform Rule |
| Jan 1, 2010 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 14, 2011 | Lead and Copper Rule |
| Jan 1, 2009 | Dec 31, 2009 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2009 | Nitrate Rule |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.