Olympia, WA · Thurston County
BOSTON HARBOR 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)
- WA5307850
- System type
- Community Water System
- Population served
- 1,153
- Service connections
- 278
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Maximum Contaminant Level Violation, Average
Health-basedTTHM
July 1, 2025 – September 30, 2025
ArchivedMaximum Contaminant Level Violation, Average
Health-basedTotal Haloacetic Acids (HAA5)
January 1, 2022 – March 31, 2022
ArchivedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—Vinyl chloride
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—Carbon tetrachloride
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—Tetrachloroethylene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—CHLOROBENZENE
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—Benzene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—Toluene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2020 – December 31, 2022
ResolvedMonitoring, Regular
—Styrene
January 1, 2020 – December 31, 2022
ResolvedMaximum Contaminant Level Violation, Average
Health-basedTTHM
January 1, 2017 – March 31, 2017
ResolvedMaximum Contaminant Level Violation, Average
Health-basedTTHM
July 1, 2016 – September 30, 2016
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2015 – August 28, 2015
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 1998 – November 30, 1998
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 1993 – November 30, 1993
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
December 1, 1992 – December 31, 1992
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 1992 – November 30, 1992
ArchivedMonitoring, Routine Major (TCR)
—Coliform (TCR)
October 1, 1992 – October 31, 1992
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Selenium
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Arsenic
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Cadmium
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Fluoride
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Nitrate
October 1, 1979 – October 31, 1979
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 |
|---|---|---|---|---|
| July 1, 2025 – September 30, 2025 | Maximum Contaminant Level Violation, Average | TTHM | Health-based | Archived |
| January 1, 2022 – March 31, 2022 | Maximum Contaminant Level Violation, Average | Total Haloacetic Acids (HAA5) | Health-based | Archived |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | Vinyl chloride | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | Benzene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | Toluene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| January 1, 2020 – December 31, 2022 | Monitoring, Regular | Styrene | — | Resolved |
| January 1, 2017 – March 31, 2017 | Maximum Contaminant Level Violation, Average | TTHM | Health-based | Resolved |
| July 1, 2016 – September 30, 2016 | Maximum Contaminant Level Violation, Average | TTHM | Health-based | Resolved |
| July 1, 2015 – August 28, 2015 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| January 1, 2003 – December 31, 2003 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| November 1, 1998 – November 30, 1998 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| November 1, 1993 – November 30, 1993 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| December 1, 1992 – December 31, 1992 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| November 1, 1992 – November 30, 1992 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| October 1, 1992 – October 31, 1992 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Selenium | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Arsenic | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Cadmium | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Fluoride | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Nitrate | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
Enforcement actions
- March 30, 2023State Compliance achieved20 linked violations
- June 13, 2022State Administrative/Compliance Order without penalty issued26 linked violations
- June 30, 2018State Compliance achieved3 linked violations
- September 29, 2016State Compliance achieved1 linked violation
- August 28, 2015State Compliance achieved1 linked violation
- November 30, 1993State Violation/Reminder Notice1 linked violation
- October 31, 1992State Violation/Reminder Notice1 linked violation
Contact
BOSTON HARBOR
Phone not on record
Olympia, WA 98512