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QUILCENE

PWS ID: WA53AB292 · Port Townsend, Washington 98368

QUILCENE serves 119 people in Port Townsend, Washington using Groundwater water sources. It has 155 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: QUILCENE

QUILCENE is a local-owned community water system that delivers drinking water to 119 residents in Port Townsend, Washington (Jefferson County) through 41 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 155 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 149 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 ETHYLENE DIBROMIDE, recorded in 17 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. QUILCENE's 155 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
119
Total Violations
155
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
41
County
Jefferson
School/Daycare
No
MCL Violations
0
Monitoring Violations
149
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
ETHYLENE DIBROMIDE MR 17 2007
Diquat MR 14 2007
1,2-DIBROMO-3-CHLOROPROPANE MR 13 2007
Lead and Copper Rule MR 10 2007
Heptachlor epoxide MR 9 2007
OXAMYL MR 9 2007
Carbofuran MR 9 2007
Aldicarb sulfoxide MR 9 2007
Aldicarb sulfone MR 9 2007
Aldicarb MR 9 2007
Consumer Confidence Rule Other 6 2025
Pentachlorophenol MR 4 2007
Picloram MR 2 2007
Hexachlorocyclopentadiene MR 2 2007
Simazine MR 2 2007
LASSO MR 2 2007
Dinoseb MR 2 2007
Benzo(a)pyrene MR 2 2007
Dalapon MR 2 2007
Chlordane MR 2 2007
BHC-GAMMA MR 2 2007
Methoxychlor MR 2 2007
Atrazine MR 2 2007
Di(2-ethylhexyl) adipate MR 2 2007
HEXACHLOROBENZENE MR 2 2007
2,4,5-TP MR 2 2007
Heptachlor MR 2 2007
Toxaphene MR 2 2007
Endrin MR 2 2007
Di(2-ethylhexyl) phthalate MR 2 2007

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 QUILCENE.

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 WA53AB292 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 QUILCENE 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 Consumer Confidence Rule Other 6 SDWIS / WA53AB292 / 7000
2019 Revised Total Coliform Rule MON 1 SDWIS / WA53AB292 / 8000
2007 ETHYLENE DIBROMIDE MR 17 SDWIS / WA53AB292 / 2946
2007 Diquat MR 14 SDWIS / WA53AB292 / 2032
2007 1,2-DIBROMO-3-CHLOROPROPANE MR 13 SDWIS / WA53AB292 / 2931
2007 Lead and Copper Rule MR 10 SDWIS / WA53AB292 / 5000
2007 Heptachlor epoxide MR 9 SDWIS / WA53AB292 / 2067
2007 OXAMYL MR 9 SDWIS / WA53AB292 / 2036
2007 Carbofuran MR 9 SDWIS / WA53AB292 / 2046
2007 Aldicarb sulfoxide MR 9 SDWIS / WA53AB292 / 2043
2007 Aldicarb sulfone MR 9 SDWIS / WA53AB292 / 2044
2007 Aldicarb MR 9 SDWIS / WA53AB292 / 2047
2007 Pentachlorophenol MR 4 SDWIS / WA53AB292 / 2326
2007 Picloram MR 2 SDWIS / WA53AB292 / 2040
2007 Hexachlorocyclopentadiene MR 2 SDWIS / WA53AB292 / 2042

How QUILCENE Compares

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

Metric QUILCENE Washington avg Federal benchmark
Total violations 155 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 119 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 QUILCENE water safe to drink? ▼
QUILCENE (PWS ID: WA53AB292) has 155 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 119 people using Groundwater sources.
How many people does QUILCENE serve? ▼
QUILCENE serves 119 people in Port Townsend, Washington. It is a Local-owned system using Groundwater water sources with 41 service connections.
What type of violations does QUILCENE have? ▼
QUILCENE has 155 total violations: 0 health-based violations (MCL exceedances or treatment failures), 149 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in QUILCENE water? ▼
No PFAS testing data is available for QUILCENE under the EPA's UCMR5 monitoring program.
What water source does QUILCENE use? ▼
QUILCENE 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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