Prosser, WA · Benton County
PROSSER CITY OF Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Washington’s official records. Always confirm current status with Washington before making decisions based on this information.
System facts
- System ID (PWSID)
- WA5369750
- System type
- Community Water System
- Population served
- 6,211
- Service connections
- 2,889
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Monitoring, Regular
—Nitrate
January 1, 2023 – December 31, 2023
ResolvedMonitoring, Regular
—Fluoride
July 1, 2008 – September 30, 2008
ResolvedMonitoring, Regular
—Fluoride
October 1, 2004 – December 31, 2004
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
October 1, 1996 – October 31, 1996
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
October 19, 1994 – November 18, 1994
ArchivedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
January 1, 1994 – January 31, 1994
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1979 – October 31, 1979
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2023 – December 31, 2023 | Monitoring, Regular | Nitrate | — | Resolved |
| July 1, 2008 – September 30, 2008 | Monitoring, Regular | Fluoride | — | Resolved |
| October 1, 2004 – December 31, 2004 | Monitoring, Regular | Fluoride | — | Resolved |
| October 1, 1996 – October 31, 1996 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
| October 19, 1994 – November 18, 1994 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| January 1, 1994 – January 31, 1994 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- March 12, 2024State Compliance achieved1 linked violation
- August 9, 2017State Compliance achieved1 linked violation
- October 15, 2014State Compliance achieved1 linked violation
- September 25, 2013State Compliance achieved1 linked violation
- December 5, 2005State Compliance achieved2 linked violations
- October 31, 1996State Public Notification received5 linked violations
- January 31, 1994State Violation/Reminder Notice1 linked violation
- September 30, 1992State Violation/Reminder Notice1 linked violation
Contact
PROSSER CITY OF
Phone not on record
Prosser, WA 99350