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EASTGATE

PWS ID: WA5322030 · Coupeville, Washington 98239

EASTGATE serves 76 people in Coupeville, Washington using Groundwater water sources. It has 284 recorded EPA violations, including 17 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: EASTGATE

EASTGATE is a private-owned community water system that delivers drinking water to 76 residents in Coupeville, Washington (Island County) through 38 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 284 total violations for this system , of which 17 (6%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 263 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Arsenic, recorded in 22 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Washington, EPA tracks 4,557 public water systems serving 9,736,844 people, with 314,648 cumulative violations and 20,590 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. EASTGATE's 284 violations sit above the Washington average. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
76
Total Violations
284
Health-Based Violations
17
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
38
County
Island
School/Daycare
No
MCL Violations
17
Monitoring Violations
263
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MR 22 2025
Lead and Copper Rule MR 13 2004
Arsenic MCL 12 2025
Pentachlorophenol MR 11 2007
2,4,5-TP MR 8 2007
OXAMYL MR 8 2007
Aldicarb sulfone MR 8 2007
BHC-GAMMA MR 8 2007
Methoxychlor MR 8 2007
Toxaphene MR 8 2007
Di(2-ethylhexyl) adipate MR 8 2007
Simazine MR 8 2007
Hexachlorocyclopentadiene MR 8 2007
Heptachlor MR 8 2007
Chlordane MR 8 2007
HEXACHLOROBENZENE MR 8 2007
Picloram MR 8 2007
LASSO MR 8 2007
Atrazine MR 8 2007
Dalapon MR 8 2007
Heptachlor epoxide MR 8 2007
Aldicarb MR 8 2007
Aldicarb sulfoxide MR 8 2007
Dinoseb MR 8 2007
Di(2-ethylhexyl) phthalate MR 8 2007
Endrin MR 8 2007
Benzo(a)pyrene MR 8 2007
Carbofuran MR 8 2007
Coliform (TCR) MR 6 1996
Coliform (TCR) MCL 5 1996

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for EASTGATE.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID WA5322030 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Washington Drinking Water Authority

Washington State Department of Health — Office of Drinking Water is the primacy agency that licenses and inspects EASTGATE under EPA-delegated authority.

Open WA regulator portal

Source: Washington State Department of Health — Office of Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Arsenic MR 22 SDWIS / WA5322030 / 1005
2025 Arsenic MCL 12 SDWIS / WA5322030 / 1005
2022 Nitrate MR 4 SDWIS / WA5322030 / 1040
2021 Total Haloacetic Acids (HAA5) MR 1 SDWIS / WA5322030 / 2456
2021 TTHM MR 1 SDWIS / WA5322030 / 2950
2014 Consumer Confidence Rule Other 1 SDWIS / WA5322030 / 7000
2007 Pentachlorophenol MR 11 SDWIS / WA5322030 / 2326
2007 2,4,5-TP MR 8 SDWIS / WA5322030 / 2110
2007 OXAMYL MR 8 SDWIS / WA5322030 / 2036
2007 Aldicarb sulfone MR 8 SDWIS / WA5322030 / 2044
2007 BHC-GAMMA MR 8 SDWIS / WA5322030 / 2010
2007 Methoxychlor MR 8 SDWIS / WA5322030 / 2015
2007 Toxaphene MR 8 SDWIS / WA5322030 / 2020
2007 Di(2-ethylhexyl) adipate MR 8 SDWIS / WA5322030 / 2035
2007 Simazine MR 8 SDWIS / WA5322030 / 2037

How EASTGATE Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric EASTGATE Washington avg Federal benchmark
Total violations 284 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 17 4.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 39.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 76 2,137 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,557 regulated public water systems in Washington.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is EASTGATE water safe to drink? ▼
EASTGATE (PWS ID: WA5322030) has 284 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 76 people using Groundwater sources.
How many people does EASTGATE serve? ▼
EASTGATE serves 76 people in Coupeville, Washington. It is a Private-owned system using Groundwater water sources with 38 service connections.
What type of violations does EASTGATE have? ▼
EASTGATE has 284 total violations: 17 health-based violations (MCL exceedances or treatment failures), 263 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in EASTGATE water? ▼
No PFAS testing data is available for EASTGATE under the EPA's UCMR5 monitoring program.
What water source does EASTGATE use? ▼
EASTGATE uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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