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Community Water System · PWS WA5338150

Kent Water Department

Kent, Washington 98032 - drinking water served from surface water sources to 166,421 people, tracked in EPA SDWIS and UCMR5.

166,421
People served
37
EPA violations
0
Health-based
1 PFAS
UCMR5 result

The verdict

EPA records 37 drinking-water violations at Kent Water Department - below the Washington per-system average, and UCMR5 testing detected 1 PFAS compound.

37
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
166,421
People served by this system
1
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Kent Water Department

Kent Water Department is a local-owned community water system that delivers drinking water to 166,421 residents in Kent, Washington (King County) through 35,962 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 37 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 30 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Pentachlorophenol, recorded in 2 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 3.4 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%).

Kent Water Department's 37 violations sit below the Washington average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
166,421
Total Violations
37
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
35,962
County
King
School/Daycare
No
MCL Violations
0
Monitoring Violations
30
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Pentachlorophenol MR 2 2006
Consumer Confidence Rule Other 1 2024
Aldicarb sulfone MR 1 2006
BHC-GAMMA MR 1 2006
Heptachlor MR 1 2006
Picloram MR 1 2006
Di(2-ethylhexyl) adipate MR 1 2006
HEXACHLOROBENZENE MR 1 2006
Simazine MR 1 2006
1,2-DIBROMO-3-CHLOROPROPANE MR 1 2006
Toxaphene MR 1 2006
Carbofuran MR 1 2006
Gross Alpha, Excl. Radon and U MR 1 1979
Chlordane MR 1 2006
Dinoseb MR 1 2006
OXAMYL MR 1 2006
Hexachlorocyclopentadiene MR 1 2006
Benzo(a)pyrene MR 1 2006
Methoxychlor MR 1 2006
Endrin MR 1 2006
Aldicarb MR 1 2006
Di(2-ethylhexyl) phthalate MR 1 2006
Diquat MR 1 2006
Aldicarb sulfoxide MR 1 2006
LASSO MR 1 2006
2,4,5-TP MR 1 2006
Atrazine MR 1 2006
ETHYLENE DIBROMIDE MR 1 2006
Heptachlor epoxide MR 1 2006
Dalapon MR 1 2006

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 261 samples detected PFAS.

Contaminant Date Result MRL Status
11Cl-PF3OUdS 7/17/2025 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 7/17/2025 <6.00 ppt 6.00 ppt Not Detected
PFHxS 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFNA 7/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFOS 7/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFOA 7/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFDA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFUnA 7/17/2025 <2.00 ppt 2.00 ppt Not Detected
9Cl-PF3ONS 7/17/2025 <2.00 ppt 2.00 ppt Not Detected
ADONA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 7/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/17/2025 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 7/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFTA 7/17/2025 <8.00 ppt 8.00 ppt Not Detected
PFHxA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 7/17/2025 <7.00 ppt 7.00 ppt Not Detected
4:2 FTS 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpS 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFBS 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
NFDHA 7/17/2025 <20.00 ppt 20.00 ppt Not Detected
PFHpA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFEESA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFMPA 7/17/2025 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 7/17/2025 <5.00 ppt 5.00 ppt Not Detected
NEtFOSAA 7/17/2025 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 7/17/2025 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 7/17/2025 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 7/17/2025 <6.00 ppt 6.00 ppt Not Detected
PFBS 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFTA 7/17/2025 <8.00 ppt 8.00 ppt Not Detected
PFDA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFNA 7/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFHxS 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFOA 7/17/2025 <4.00 ppt 4.00 ppt Not Detected
PFHpS 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFUnA 7/17/2025 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 7/17/2025 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 7/17/2025 <2.00 ppt 2.00 ppt Not Detected
PFEESA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
PFOS 7/17/2025 <4.00 ppt 4.00 ppt Not Detected
ADONA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected
NFDHA 7/17/2025 <20.00 ppt 20.00 ppt Not Detected
PFMBA 7/17/2025 <3.00 ppt 3.00 ppt Not Detected

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 Kent Water Department.

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 WA5338150 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 Kent Water Department 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
2024 Consumer Confidence Rule Other 1 SDWIS / WA5338150 / 7000
2006 Pentachlorophenol MR 2 SDWIS / WA5338150 / 2326
2006 Aldicarb sulfone MR 1 SDWIS / WA5338150 / 2044
2006 BHC-GAMMA MR 1 SDWIS / WA5338150 / 2010
2006 Heptachlor MR 1 SDWIS / WA5338150 / 2065
2006 Picloram MR 1 SDWIS / WA5338150 / 2040
2006 Di(2-ethylhexyl) adipate MR 1 SDWIS / WA5338150 / 2035
2006 HEXACHLOROBENZENE MR 1 SDWIS / WA5338150 / 2274
2006 Simazine MR 1 SDWIS / WA5338150 / 2037
2006 1,2-DIBROMO-3-CHLOROPROPANE MR 1 SDWIS / WA5338150 / 2931
2006 Toxaphene MR 1 SDWIS / WA5338150 / 2020
2006 Carbofuran MR 1 SDWIS / WA5338150 / 2046
2006 Chlordane MR 1 SDWIS / WA5338150 / 2959
2006 Dinoseb MR 1 SDWIS / WA5338150 / 2041
2006 OXAMYL MR 1 SDWIS / WA5338150 / 2036

How Kent Water Department Compares

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

Metric Kent Water Department Washington avg Federal benchmark
Total violations 37 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 1 compound 39.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 166,421 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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Kent Water Department water safe to drink?
Kent Water Department (PWS ID: WA5338150) has 37 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 166,421 people using Surface Water sources.
How many people does Kent Water Department serve?
Kent Water Department serves 166,421 people in Kent, Washington. It is a Local-owned system using Surface Water water sources with 35,962 service connections.
What type of violations does Kent Water Department have?
Kent Water Department has 37 total violations: 0 health-based violations (MCL exceedances or treatment failures), 30 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Kent Water Department water?
Yes. UCMR5 testing detected 1 PFAS compound in Kent Water Department's water supply: PFBS. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Kent Water Department use?
Kent Water Department uses Surface Water 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.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.