Vashion Island, WA · King County
WESTSIDE WATER ASSN Water System
Consumer Confidence Report status
WESTSIDE WATER ASSN must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show 1 item for WESTSIDE WATER ASSN that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)
- WA5394950
- System type
- Community Water System
- Population served
- 562
- Service connections
- 239
- Ownership
- privately owned
- Water source
- groundwater (wells)
WESTSIDE WATER ASSN is one of 428 community water systems in Washington in the 501 to 3,300 people size category, serving 562 people from groundwater.
As of August 1, 2026, its federal record holds 44 entries between 1979 and 2023, of which 1 remains open; none are health-based.
Of the 44, 43 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, inorganic chemicals, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.
Violation history
Follow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 2023
UnaddressedMonitoring and Reporting (DBP)
—TTHM
January 1, 2020 – December 31, 2020
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2020 – December 31, 2020
ResolvedMonitoring, Regular
—Nitrate
January 1, 2020 – December 31, 2020
ResolvedMonitoring, Regular
—Nitrate
January 1, 2020 – December 31, 2020
ResolvedMonitoring, Regular
—Nitrate
January 1, 2020 – December 31, 2020
ResolvedMonitoring, Regular
—Nitrate
January 1, 2020 – December 31, 2020
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
May 1, 2018 – May 31, 2018
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2017 – December 31, 2017
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2017 – December 31, 2017
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2015 – October 29, 2015
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2015 – December 31, 2015
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2015 – December 31, 2015
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2014 – December 31, 2014
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2014 – December 31, 2014
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
April 1, 2008 – June 30, 2008
ArchivedMonitoring, Regular
—Diquat
April 1, 2008 – June 30, 2008
ArchivedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
April 1, 2008 – June 30, 2008
ArchivedMonitoring, Regular
—Aldicarb sulfone
January 1, 2008 – December 31, 2010
ArchivedMonitoring, Regular
—OXAMYL
January 1, 2008 – December 31, 2010
ArchivedMonitoring, Regular
—Aldicarb sulfoxide
January 1, 2008 – December 31, 2010
ArchivedMonitoring, Regular
—Carbofuran
January 1, 2008 – December 31, 2010
ArchivedMonitoring, Regular
—Aldicarb
January 1, 2008 – December 31, 2010
ArchivedMonitoring, Regular
—OXAMYL
January 1, 2008 – December 31, 2010
ArchivedMonitoring, Regular
—Aldicarb sulfoxide
January 1, 2008 – December 31, 2010
ArchivedMonitoring, Regular
—Aldicarb sulfone
January 1, 2008 – December 31, 2010
ArchivedMonitoring, Regular
—Carbofuran
January 1, 2008 – December 31, 2010
ArchivedMonitoring, Regular
—Aldicarb
January 1, 2008 – December 31, 2010
ArchivedMonitoring, Regular
—Diquat
October 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
October 1, 2007 – December 31, 2007
ArchivedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
October 1, 2007 – December 31, 2007
ArchivedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Regular
—Nitrate
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 1992 – November 30, 1992
ArchivedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
October 1, 1992 – October 31, 1992
ArchivedMonitoring, Regular
—Barium
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Cadmium
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Chromium
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Fluoride
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Mercury
October 1, 1979 – October 31, 1979
ArchivedMonitoring, Regular
—Nitrate
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
—Gross Alpha, Excl. Radon and U
October 1, 1979 – October 31, 1979
Archived
Unaddressed no corrective action on record yetResolved 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 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Unaddressed |
| January 1, 2020 – December 31, 2020 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2020 – December 31, 2020 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| January 1, 2020 – December 31, 2020 | Monitoring, Regular | Nitrate | — | Resolved |
| January 1, 2020 – December 31, 2020 | Monitoring, Regular | Nitrate | — | Resolved |
| January 1, 2020 – December 31, 2020 | Monitoring, Regular | Nitrate | — | Resolved |
| January 1, 2020 – December 31, 2020 | Monitoring, Regular | Nitrate | — | Resolved |
| May 1, 2018 – May 31, 2018 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| January 1, 2017 – December 31, 2017 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2017 – December 31, 2017 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| July 1, 2015 – October 29, 2015 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| January 1, 2015 – December 31, 2015 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2015 – December 31, 2015 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| January 1, 2014 – December 31, 2014 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2014 – December 31, 2014 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| April 1, 2008 – June 30, 2008 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | 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 |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Aldicarb sulfone | — | Archived |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | OXAMYL | — | Archived |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Aldicarb sulfoxide | — | Archived |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Carbofuran | — | Archived |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Aldicarb | — | Archived |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | OXAMYL | — | Archived |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Aldicarb sulfoxide | — | Archived |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Aldicarb sulfone | — | Archived |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Carbofuran | — | Archived |
| January 1, 2008 – December 31, 2010 | Monitoring, Regular | Aldicarb | — | Archived |
| October 1, 2007 – December 31, 2007 | Monitoring, Regular | Diquat | — | Resolved |
| October 1, 2007 – December 31, 2007 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Archived |
| October 1, 2007 – December 31, 2007 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Archived |
| January 1, 2007 – December 31, 2007 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Nitrate | — | Resolved |
| November 1, 1992 – November 30, 1992 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| October 1, 1992 – October 31, 1992 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Barium | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Cadmium | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Chromium | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Fluoride | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Mercury | — | Archived |
| October 1, 1979 – October 31, 1979 | Monitoring, Regular | Nitrate | — | 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 | Gross Alpha, Excl. Radon and U | — | Archived |
Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- August 9, 2021State Compliance achieved1 linked violation
- August 9, 2021State Compliance achieved1 linked violation
- August 9, 2021State Compliance achieved1 linked violation
- July 8, 2021State Compliance achieved1 linked violation
- July 8, 2021State Compliance achieved1 linked violation
- July 8, 2021State Compliance achieved1 linked violation
- August 15, 2018State Compliance achieved1 linked violation
- August 15, 2018State Compliance achieved1 linked violation
- June 12, 2018State Compliance achieved1 linked violation
- October 4, 2016State Compliance achieved2 linked violations
- October 4, 2016State Compliance achieved2 linked violations
- October 29, 2015State Compliance achieved1 linked violation
- December 31, 2007State Compliance achieved8 linked violations
- August 17, 1994Federal issued Formal Notice of Violation3 linked violations
- November 30, 1992State Violation/Reminder Notice2 linked violations
Common questions
Is WESTSIDE WATER ASSN required to publish a Consumer Confidence Report?
- Yes. WESTSIDE WATER ASSN is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is WESTSIDE WATER ASSN’s next Consumer Confidence Report due?
- WESTSIDE WATER ASSN’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WESTSIDE WATER ASSN have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 item for WESTSIDE WATER ASSN that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
WESTSIDE WATER ASSN
Phone not on record
Vashion Island, WA 98070