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Community Water System · PWS WA5394350

Wenatchee City Of

Wenatchee, Washington 98807-0519 - drinking water served from groundwater sources to 43,690 people, tracked in EPA SDWIS and UCMR5.

43,690
People served
91
EPA violations
0
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 91 drinking-water violations at Wenatchee City Of - above the Washington per-system average.

91
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
43,690
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Wenatchee City Of

Wenatchee City Of is a local-owned community water system that delivers drinking water to 43,690 residents in Wenatchee, Washington (Chelan County) through 11,256 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 91 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 91 monitoring and reporting violations are on file. The most recent violation on record dates to 2006.

The most frequently cited contaminant at this system is OXAMYL, recorded in 8 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Wenatchee City Of's 91 violations sit above 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.

Population Served
43,690
Total Violations
91
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
11,256
County
Chelan
School/Daycare
No
MCL Violations
0
Monitoring Violations
91
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
OXAMYL MR 8 2006
Carbofuran MR 8 2006
Aldicarb sulfoxide MR 8 2006
Aldicarb MR 8 2006
Aldicarb sulfone MR 8 2006
Pentachlorophenol MR 4 2006
Picloram MR 2 2006
Atrazine MR 2 2006
ETHYLENE DIBROMIDE MR 2 2006
BHC-GAMMA MR 2 2006
Toxaphene MR 2 2006
Heptachlor MR 2 2006
HEXACHLOROBENZENE MR 2 2006
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2006
Diquat MR 2 2006
Simazine MR 2 2006
Dalapon MR 2 2006
Hexachlorocyclopentadiene MR 2 2006
2,4,5-TP MR 2 2006
Dinoseb MR 2 2006
Heptachlor epoxide MR 2 2006
Benzo(a)pyrene MR 2 2006
Endrin MR 2 2006
Chlordane MR 2 2006
Di(2-ethylhexyl) adipate MR 2 2006
Methoxychlor MR 2 2006
Di(2-ethylhexyl) phthalate MR 2 2006
LASSO MR 2 2006
Gross Alpha, Excl. Radon and U MR 1 1979
Coliform (TCR) MR 1 1992

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
PFDoA 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 12/11/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 12/11/2024 <20.00 ppt 20.00 ppt Not Detected
PFEESA 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 12/11/2024 <4.00 ppt 4.00 ppt Not Detected
4:2 FTS 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFBA 12/11/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 12/11/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 12/11/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 12/11/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpS 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 12/11/2024 <5.00 ppt 5.00 ppt Not Detected
PFDA 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 12/11/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 12/11/2024 <4.00 ppt 4.00 ppt Not Detected
PFNA 12/11/2024 <4.00 ppt 4.00 ppt Not Detected
PFHxS 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 12/11/2024 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 12/11/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 12/11/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 12/11/2024 <7.00 ppt 7.00 ppt Not Detected
PFTA 12/11/2024 <8.00 ppt 8.00 ppt Not Detected
PFUnA 12/11/2024 <2.00 ppt 2.00 ppt Not Detected
6:2 FTS 12/11/2024 <5.00 ppt 5.00 ppt Not Detected
PFHxA 11/25/2025 <3.00 ppt 3.00 ppt Not Detected
PFUnA 11/25/2025 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 11/25/2025 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 11/25/2025 <2.00 ppt 2.00 ppt Not Detected
PFTA 11/25/2025 <8.00 ppt 8.00 ppt Not Detected
PFDoA 11/25/2025 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 11/25/2025 <5.00 ppt 5.00 ppt Not Detected
ADONA 11/25/2025 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 11/25/2025 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 11/25/2025 <5.00 ppt 5.00 ppt Not Detected
PFMPA 11/25/2025 <4.00 ppt 4.00 ppt Not Detected
PFPeA 11/25/2025 <3.00 ppt 3.00 ppt Not Detected
PFMBA 11/25/2025 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 11/25/2025 <5.00 ppt 5.00 ppt Not Detected
NEtFOSAA 11/25/2025 <5.00 ppt 5.00 ppt Not Detected
PFBA 11/25/2025 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 11/25/2025 <7.00 ppt 7.00 ppt Not Detected
PFDA 11/25/2025 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 11/25/2025 <6.00 ppt 6.00 ppt Not Detected
PFEESA 11/25/2025 <3.00 ppt 3.00 ppt Not Detected
NFDHA 11/25/2025 <20.00 ppt 20.00 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 Wenatchee City Of.

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 WA5394350 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 Wenatchee City Of 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
2006 OXAMYL MR 8 SDWIS / WA5394350 / 2036
2006 Carbofuran MR 8 SDWIS / WA5394350 / 2046
2006 Aldicarb sulfoxide MR 8 SDWIS / WA5394350 / 2043
2006 Aldicarb MR 8 SDWIS / WA5394350 / 2047
2006 Aldicarb sulfone MR 8 SDWIS / WA5394350 / 2044
2006 Pentachlorophenol MR 4 SDWIS / WA5394350 / 2326
2006 Picloram MR 2 SDWIS / WA5394350 / 2040
2006 Atrazine MR 2 SDWIS / WA5394350 / 2050
2006 ETHYLENE DIBROMIDE MR 2 SDWIS / WA5394350 / 2946
2006 BHC-GAMMA MR 2 SDWIS / WA5394350 / 2010
2006 Toxaphene MR 2 SDWIS / WA5394350 / 2020
2006 Heptachlor MR 2 SDWIS / WA5394350 / 2065
2006 HEXACHLOROBENZENE MR 2 SDWIS / WA5394350 / 2274
2006 1,2-DIBROMO-3-CHLOROPROPANE MR 2 SDWIS / WA5394350 / 2931
2006 Diquat MR 2 SDWIS / WA5394350 / 2032

How Wenatchee City Of Compares

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

Metric Wenatchee City Of Washington avg Federal benchmark
Total violations 91 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 43,690 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 Wenatchee City Of water safe to drink?
Wenatchee City Of (PWS ID: WA5394350) has 91 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 43,690 people using Groundwater sources.
How many people does Wenatchee City Of serve?
Wenatchee City Of serves 43,690 people in Wenatchee, Washington. It is a Local-owned system using Groundwater water sources with 11,256 service connections.
What type of violations does Wenatchee City Of have?
Wenatchee City Of has 91 total violations: 0 health-based violations (MCL exceedances or treatment failures), 91 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Wenatchee City Of water?
No. Wenatchee City Of was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Wenatchee City Of use?
Wenatchee City Of 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.
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.