DAYTON WATER DEPARTMENT
Washington - Community Water System - PWSID: WA5318250
System Information
| PWSID | WA5318250 |
| System Name | DAYTON WATER DEPARTMENT |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 7, 1981 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Dayton |
| ZIP Code | 99328 |
| Address | 111 S First St |
| Organization | DAYTON WATER DEPARTMENT |
| Phone | - |
Population & Service
| Population Served | 3,374 |
| Service Connections | 1,483 |
Drinking Water Violations (21)
This water system has 21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jul 1, 2018 | - | Other | No | No | - | - | - | Resolved | Sep 11, 2018 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Oct 26, 2016 | - | |
| Jul 1, 2015 | - | Other | No | No | - | - | - | Resolved | Aug 21, 2015 | - | |
| Jan 1, 2000 | - | MR | No | No | - | TT | - | Resolved | Aug 30, 2003 | - | |
| Oct 19, 1999 | Dec 31, 1999 | Other | No | Yes | - | - | - | Resolved | Dec 31, 1999 | - | |
| Jul 1, 1998 | Jul 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1998 | - | |
| Jul 1, 1998 | Jul 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1998 | - | |
| Jul 1, 1998 | Jul 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1998 | - | |
| Oct 1, 1997 | Oct 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1997 | - | |
| Oct 1, 1997 | Oct 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1997 | - | |
| Oct 1, 1997 | Oct 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1997 | - | |
| Nov 1, 1996 | Nov 30, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 1996 | - | |
| Nov 1, 1996 | Nov 30, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 1996 | - | |
| Nov 1, 1996 | Nov 30, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 1996 | - | |
| Sep 1, 1996 | Sep 30, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1996 | - | |
| Mar 1, 1994 | Mar 31, 1994 | MR | No | Yes | - | 5% of samples | - | Archived | Mar 31, 1994 | - | |
| Jan 1, 1994 | Jan 31, 1994 | MR | No | Yes | - | 5% of samples | - | Archived | Jan 31, 1994 | - | |
| Oct 1, 1991 | Oct 31, 1991 | MR | No | No | - | 5% of samples | - | Archived | Oct 31, 1991 | - | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | - | 15 pCi/L | - | Archived | Oct 31, 1979 | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.