Yakima, WA · Yakima County
YAK CO - TERRACE HEIGHTS 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)
- WA5306029
- System type
- Community Water System
- Population served
- 8,410
- Service connections
- 2,725
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Monitoring, Regular
—Nitrate
January 1, 2025 – December 31, 2025
ArchivedMonitoring, Regular
—Nitrate
January 1, 2025 – December 31, 2025
ArchivedMonitoring, Regular
—Nitrate
January 1, 2025 – December 31, 2025
ArchivedMaximum Contaminant Level Violation, E. coli (RTCR)
Health-basedRevised Total Coliform Rule
August 1, 2023 – August 31, 2023
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
October 1, 2022 – October 31, 2022
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—Vinyl chloride
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—Carbon tetrachloride
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—Trichloroethylene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—Tetrachloroethylene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—CHLOROBENZENE
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—Benzene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—Toluene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—Ethylbenzene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—Styrene
January 1, 2020 – December 31, 2025
ArchivedMonitoring, Regular
—Diquat
April 1, 2008 – June 30, 2008
ArchivedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
April 1, 2008 – June 30, 2008
ArchivedMonitoring, Regular
—ETHYLENE DIBROMIDE
April 1, 2008 – June 30, 2008
ArchivedMonitoring, Regular
—Diquat
October 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Diquat
July 1, 2007 – September 30, 2007
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Carbon tetrachloride
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Tetrachloroethylene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—CHLOROBENZENE
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Benzene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Toluene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Styrene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Vinyl chloride
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Nitrate
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
August 1, 1997 – August 31, 1997
ArchivedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
July 1, 1993 – July 31, 1993
Archived
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2025 – December 31, 2025 | Monitoring, Regular | Nitrate | — | Archived |
| January 1, 2025 – December 31, 2025 | Monitoring, Regular | Nitrate | — | Archived |
| January 1, 2025 – December 31, 2025 | Monitoring, Regular | Nitrate | — | Archived |
| August 1, 2023 – August 31, 2023 | Maximum Contaminant Level Violation, E. coli (RTCR) | Revised Total Coliform Rule | Health-based | Resolved |
| October 1, 2022 – October 31, 2022 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | 1,2-Dichloropropane | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | DICHLOROMETHANE | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | o-Dichlorobenzene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | p-Dichlorobenzene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | Vinyl chloride | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | 1,1-Dichloroethylene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | 1,2-Dichloroethane | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | Carbon tetrachloride | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | Trichloroethylene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | Tetrachloroethylene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | CHLOROBENZENE | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | Benzene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | Toluene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | Ethylbenzene | — | Archived |
| January 1, 2020 – December 31, 2025 | Monitoring, Regular | Styrene | — | Archived |
| April 1, 2008 – June 30, 2008 | Monitoring, Regular | Diquat | — | Archived |
| April 1, 2008 – June 30, 2008 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Archived |
| April 1, 2008 – June 30, 2008 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Archived |
| October 1, 2007 – December 31, 2007 | Monitoring, Regular | Diquat | — | Resolved |
| July 1, 2007 – September 30, 2007 | Monitoring, Regular | Diquat | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Benzene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Toluene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Styrene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Vinyl chloride | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Nitrate | — | Resolved |
| August 1, 1997 – August 31, 1997 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| July 1, 1993 – July 31, 1993 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Archived |
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
Enforcement actions
- September 18, 2023State Compliance achieved1 linked violation
- November 8, 2022State Compliance achieved1 linked violation
- September 1, 2014State Compliance achieved1 linked violation
- June 11, 2008State Compliance achieved55 linked violations
- June 11, 2008State Compliance achieved69 linked violations
- June 11, 2008State Compliance achieved25 linked violations
- June 11, 2008State Compliance achieved42 linked violations
- June 11, 2008State Compliance achieved21 linked violations
- June 11, 2008State Compliance achieved23 linked violations
- June 11, 2008State Compliance achieved42 linked violations
- January 1, 2008State Compliance achieved224 linked violations
- January 1, 2008State Compliance achieved9 linked violations
- July 31, 1993State Violation/Reminder Notice4 linked violations
Contact
YAK CO - TERRACE HEIGHTS
Phone not on record
Yakima, WA 98901