HYDRO IRRIGATION DISTRICT NO 9
Washington — Community Water System — PWSID: WA5335275
System Information
| PWSID | WA5335275 |
| System Name | HYDRO IRRIGATION DISTRICT NO 9 |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Feb 7, 1981 |
| Last Reported | Dec 11, 2025 |
Location & Contact
| State | Washington |
| City | WALLA WALLA |
| ZIP Code | 99362 |
| Address | 15 N GOSE ST |
| Organization | HYDRO IRRIGATION DISTRICT NO 9 |
| Phone | — |
Population & Service
| Population Served | 252 |
| Service Connections | 109 |
Drinking Water Violations (7)
This water system has 7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 1998 | Sep 30, 1998 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1998 | Total Coliform Rule |
| Sep 1, 1998 | Sep 30, 1998 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1998 | Total Coliform Rule |
| Sep 1, 1998 | Sep 30, 1998 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1998 | Total Coliform Rule |
| Nov 1, 1997 | Nov 30, 1997 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Nov 30, 1997 | Total Coliform Rule |
| Nov 1, 1997 | Nov 30, 1997 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Nov 30, 1997 | Total Coliform Rule |
| Aug 1, 1994 | Aug 31, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Aug 31, 1994 | Total Coliform Rule |
| Oct 1, 1979 | Oct 31, 1979 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | Oct 31, 1979 | Radionuclides and Revised Rad 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.