Oak Harbor, WA · Island County

ROLLING HILLS-GLENCAIRN 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): WA5374000
System type: Community Water System
Population served: 872
Service connections: 451
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2025 – December 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2025 – March 31, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2024 – December 31, 2024
Archived
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2024 – September 30, 2024
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2024 – September 30, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2024 – September 30, 2024
Archived
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2024 – September 30, 2024
Resolved
Monitoring and Reporting (DBP)
—
TTHM
April 1, 2024 – June 30, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2024 – June 30, 2024
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
April 1, 2024 – June 30, 2024
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
March 1, 2024 – March 31, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2024 – March 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2023 – December 31, 2023
Archived
Monitoring, Regular
—
Nitrate
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2022 – December 31, 2022
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2022 – December 31, 2022
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2021 – July 2, 2024
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2020 – December 31, 2020
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
April 1, 2007 – June 30, 2007
Archived
Monitoring, Regular
—
Diquat
April 1, 2007 – June 30, 2007
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
April 1, 2007 – June 30, 2007
Archived
Monitoring, Regular
—
Diquat
January 1, 2007 – March 31, 2007
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2007 – March 31, 2007
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2007 – March 31, 2007
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
October 1, 2006 – December 31, 2006
Archived
Monitoring, Regular
—
Diquat
October 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
October 1, 2006 – December 31, 2006
Archived
Monitoring, Regular
—
Diquat
July 1, 2006 – September 30, 2006
Archived
Monitoring, Regular
—
ETHYLENE DIBROMIDE
July 1, 2006 – September 30, 2006
Archived
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
July 1, 2006 – September 30, 2006
Archived
Monitoring, Regular
—
Nitrate
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Cadmium
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Chromium
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Fluoride
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Mercury
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Nitrate
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Selenium
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Arsenic
October 1, 1979 – October 31, 1979
Archived
Monitoring, Regular
—
Barium
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
October 1, 2025 – December 31, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2025 – March 31, 2025	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
September 1, 2024 – September 30, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2024 – September 30, 2024	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
July 1, 2024 – September 30, 2024	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2024 – June 30, 2024	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
April 1, 2024 – June 30, 2024	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
March 1, 2024 – March 31, 2024	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2024 – March 31, 2024	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
October 1, 2023 – December 31, 2023	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Archived
January 1, 2022 – December 31, 2022	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2022 – December 31, 2022	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2021 – July 2, 2024	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 2020 – December 31, 2020	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2020 – December 31, 2020	Monitoring and Reporting (DBP)	TTHM	—	Resolved
April 1, 2007 – June 30, 2007	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
April 1, 2007 – June 30, 2007	Monitoring, Regular	Diquat	—	Resolved
April 1, 2007 – June 30, 2007	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
January 1, 2007 – March 31, 2007	Monitoring, Regular	Diquat	—	Resolved
January 1, 2007 – March 31, 2007	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
January 1, 2007 – March 31, 2007	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
October 1, 2006 – December 31, 2006	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
October 1, 2006 – December 31, 2006	Monitoring, Regular	Diquat	—	Resolved
October 1, 2006 – December 31, 2006	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
July 1, 2006 – September 30, 2006	Monitoring, Regular	Diquat	—	Archived
July 1, 2006 – September 30, 2006	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Archived
July 1, 2006 – September 30, 2006	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Archived
January 1, 2003 – December 31, 2003	Monitoring, Regular	Nitrate	—	Resolved
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	Gross Alpha, Excl. Radon and U	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Arsenic	—	Archived
October 1, 1979 – October 31, 1979	Monitoring, Regular	Barium	—	Archived

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Enforcement actions

December 6, 2024State Compliance achieved2 linked violations
December 6, 2024State Compliance achieved2 linked violations
October 28, 2024State Compliance achieved1 linked violation
August 28, 2024State Compliance achieved2 linked violations
July 2, 2024State Compliance achieved1 linked violation
May 10, 2024State Administrative/Compliance Order without penalty issued7 linked violations
April 3, 2024State Compliance achieved1 linked violation
November 1, 2023State Compliance achieved1 linked violation
March 30, 2023State Compliance achieved1 linked violation
March 29, 2021State Compliance achieved1 linked violation
March 29, 2021State Compliance achieved1 linked violation
January 1, 2008State Compliance achieved87 linked violations

Contact

ROLLING HILLS-GLENCAIRN

Phone not on record

Oak Harbor, WA 98277