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Community Water System · PWS WA5312300

Chelan Water Dept City Of

Chelan, Washington 98816 - drinking water served from surface water sources to 9,425 people, tracked in EPA SDWIS and UCMR5.

9,425
People served
105
EPA violations
3
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 105 drinking-water violations at Chelan Water Dept City Of, 3% of them health-based - above the Washington per-system average.

105
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
9,425
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Chelan Water Dept City Of

Chelan Water Dept City Of is a local-owned community water system that delivers drinking water to 9,425 residents in Chelan, Washington (Chelan County) through 2,738 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 105 total violations for this system , of which 3 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 95 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is TTHM, recorded in 10 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%).

Chelan Water Dept City Of's 105 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
9,425
Total Violations
105
Health-Based Violations
3
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
2,738
County
Chelan
School/Daycare
No
MCL Violations
0
Monitoring Violations
95
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 10 2023
Total Haloacetic Acids (HAA5) MR 10 2023
Pentachlorophenol MR 6 2023
Dalapon MR 5 2023
Picloram MR 5 2023
2,4,5-TP MR 5 2023
Dinoseb MR 5 2023
Consumer Confidence Rule Other 4 2016
Surface Water Treatment Rule TT 3 1992
Arsenic MR 2 2014
Barium MR 2 2014
Chromium MR 2 2014
CYANIDE MR 2 2014
Nickel MR 2 2014
Selenium MR 2 2014
Antimony, Total MR 2 2014
Fluoride MR 2 2014
Mercury MR 2 2014
Nitrite MR 2 2014
Beryllium, Total MR 2 2014
Cadmium MR 2 2014
Thallium, Total MR 2 2014
Methoxychlor MR 1 2008
Toxaphene MR 1 2008
Di(2-ethylhexyl) phthalate MR 1 2008
LASSO MR 1 2008
Heptachlor MR 1 2008
HEXACHLOROBENZENE MR 1 2008
Chlordane MR 1 2008
Carbofuran MR 1 2008

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFOA 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFNA 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpS 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 9/24/2024 <20.00 ppt 20.00 ppt Not Detected
PFEESA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/24/2024 <4.00 ppt 4.00 ppt Not Detected
11Cl-PF3OUdS 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
ADONA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 9/24/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 9/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFTA 9/24/2024 <8.00 ppt 8.00 ppt Not Detected
PFDoA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/24/2024 <2.00 ppt 2.00 ppt Not Detected
PFUnA 9/24/2024 <2.00 ppt 2.00 ppt Not Detected
PFHxS 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 9/24/2024 <7.00 ppt 7.00 ppt Not Detected
PFHxS 6/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 6/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFOS 6/17/2024 <4.00 ppt 4.00 ppt Not Detected
PFNA 6/17/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpS 6/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 6/17/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 6/17/2024 <20.00 ppt 20.00 ppt Not Detected
ADONA 6/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 6/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 6/17/2024 <4.00 ppt 4.00 ppt Not Detected
PFDA 6/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 6/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 6/17/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 6/17/2024 <2.00 ppt 2.00 ppt Not Detected
PFPeA 6/17/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 6/17/2024 <2.00 ppt 2.00 ppt Not Detected
PFBA 6/17/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 6/17/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 6/17/2024 <5.00 ppt 5.00 ppt Not Detected
PFMPA 6/17/2024 <4.00 ppt 4.00 ppt Not Detected
PFBS 6/17/2024 <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 Chelan Water Dept 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 WA5312300 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 Chelan Water Dept 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
2023 TTHM MR 10 SDWIS / WA5312300 / 2950
2023 Total Haloacetic Acids (HAA5) MR 10 SDWIS / WA5312300 / 2456
2023 Pentachlorophenol MR 6 SDWIS / WA5312300 / 2326
2023 Dalapon MR 5 SDWIS / WA5312300 / 2031
2023 Picloram MR 5 SDWIS / WA5312300 / 2040
2023 2,4,5-TP MR 5 SDWIS / WA5312300 / 2110
2023 Dinoseb MR 5 SDWIS / WA5312300 / 2041
2016 Consumer Confidence Rule Other 4 SDWIS / WA5312300 / 7000
2014 Arsenic MR 2 SDWIS / WA5312300 / 1005
2014 Barium MR 2 SDWIS / WA5312300 / 1010
2014 Chromium MR 2 SDWIS / WA5312300 / 1020
2014 CYANIDE MR 2 SDWIS / WA5312300 / 1024
2014 Nickel MR 2 SDWIS / WA5312300 / 1036
2014 Selenium MR 2 SDWIS / WA5312300 / 1045
2014 Antimony, Total MR 2 SDWIS / WA5312300 / 1074

How Chelan Water Dept City Of Compares

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

Metric Chelan Water Dept City Of Washington avg Federal benchmark
Total violations 105 69 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 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 9,425 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 Chelan Water Dept City Of water safe to drink?
Chelan Water Dept City Of (PWS ID: WA5312300) has 105 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 9,425 people using Surface Water sources.
How many people does Chelan Water Dept City Of serve?
Chelan Water Dept City Of serves 9,425 people in Chelan, Washington. It is a Local-owned system using Surface Water water sources with 2,738 service connections.
What type of violations does Chelan Water Dept City Of have?
Chelan Water Dept City Of has 105 total violations: 3 health-based violations (MCL exceedances or treatment failures), 95 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Chelan Water Dept City Of water?
No. Chelan Water Dept City Of was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Chelan Water Dept City Of use?
Chelan Water Dept City Of 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.