HILLSBORO, OR · Washington County
JOINT WATER COMMISSION 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 Oregon’s official records. Always confirm current status with Oregon before making decisions based on this information.
System facts
- System ID (PWSID)
- OR4100379
- System type
- Community Water System
- Population served
- 0
- Service connections
- 4
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
Violation history
Monitoring of Treatment (SWTR-Filter)
—Surface Water Treatment Rule
March 1, 2023 – March 31, 2023
ResolvedMonitoring, Turbidity (Enhanced SWTR)
—Interim Enhanced Surface Water Treatment Rule
March 1, 2023 – March 31, 2023
ResolvedMonitoring of Treatment (SWTR-Filter)
—Surface Water Treatment Rule
March 1, 2023 – March 31, 2023
ResolvedInitial, Follow-up, or Routine Source Water M/R
—Lead and Copper Rule
January 1, 2023 – May 1, 2023
ResolvedMonitoring of Treatment (SWTR-Filter)
—Surface Water Treatment Rule
September 1, 2020 – September 30, 2020
ResolvedMonitoring of Treatment (SWTR-Filter)
—Surface Water Treatment Rule
September 1, 2020 – September 30, 2020
ResolvedMonitoring, Turbidity (Enhanced SWTR)
—Interim Enhanced Surface Water Treatment Rule
September 1, 2020 – September 30, 2020
ResolvedInitial, Follow-up, or Routine Source Water M/R
—Lead and Copper Rule
July 1, 2020 – November 4, 2020
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Nitrate
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Arsenic
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Tetrachloroethylene
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, Routine Minor (TCR)
—Coliform (TCR)
February 1, 1993 – February 28, 1993
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
December 1, 1992 – December 31, 1992
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
October 1, 1992 – October 31, 1992
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
May 1, 1992 – May 31, 1992
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
February 1, 1992 – February 29, 1992
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
January 1, 1992 – January 31, 1992
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
December 1, 1991 – December 31, 1991
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
October 1, 1991 – October 31, 1991
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
August 1, 1991 – August 31, 1991
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
June 1, 1991 – June 30, 1991
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
May 1, 1991 – May 31, 1991
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
April 1, 1991 – April 30, 1991
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
June 1, 1976 – May 31, 1980
ArchivedMonitoring, Regular
—Combined Radium (-226 and -228)
June 1, 1976 – May 31, 1980
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 |
|---|---|---|---|---|
| March 1, 2023 – March 31, 2023 | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | — | Resolved |
| March 1, 2023 – March 31, 2023 | Monitoring, Turbidity (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | — | Resolved |
| March 1, 2023 – March 31, 2023 | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | — | Resolved |
| January 1, 2023 – May 1, 2023 | Initial, Follow-up, or Routine Source Water M/R | Lead and Copper Rule | — | Resolved |
| September 1, 2020 – September 30, 2020 | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | — | Resolved |
| September 1, 2020 – September 30, 2020 | Monitoring of Treatment (SWTR-Filter) | Surface Water Treatment Rule | — | Resolved |
| September 1, 2020 – September 30, 2020 | Monitoring, Turbidity (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | — | Resolved |
| July 1, 2020 – November 4, 2020 | Initial, Follow-up, or Routine Source Water M/R | Lead and Copper Rule | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Nitrate | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Arsenic | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Styrene | — | Resolved |
| February 1, 1993 – February 28, 1993 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| December 1, 1992 – December 31, 1992 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| October 1, 1992 – October 31, 1992 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| May 1, 1992 – May 31, 1992 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| February 1, 1992 – February 29, 1992 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 1992 – January 31, 1992 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| December 1, 1991 – December 31, 1991 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| October 1, 1991 – October 31, 1991 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| August 1, 1991 – August 31, 1991 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| June 1, 1991 – June 30, 1991 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| May 1, 1991 – May 31, 1991 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| April 1, 1991 – April 30, 1991 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| June 1, 1976 – May 31, 1980 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| June 1, 1976 – May 31, 1980 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- November 4, 2020State Compliance achieved3 linked violations
- November 3, 2020State Compliance achieved5 linked violations
- January 1, 2007State Compliance achieved4 linked violations
- January 1, 2007State Compliance achieved4 linked violations
Contact
JOINT WATER COMMISSION
503-615-6671
HILLSBORO, OR 97123