CHELAN WATER DEPT CITY OF

Q: 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.

Q: 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.

Q: 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.

Q: 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.

Q: 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.

Reviewed byPlainWater Editorial, Drinking Water Quality Editorial Team · June 4, 2026

PWS ID: WA5312300 · Chelan, Washington 98816

CHELAN WATER DEPT CITY OF serves 9,425 people in Chelan, Washington using Surface Water water sources. It has 105 recorded EPA violations, including 3 health-based violations. No PFAS contamination was detected in UCMR5 testing.

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. CHELAN WATER DEPT CITY OF's 105 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

9,425

Total Violations

105

Health-Based Violations

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 120 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
PFOA	9/24/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	9/24/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFNA	9/24/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpS	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeS	9/24/2024	<0.004 µg/L	0.004 µg/L	Not Detected
NFDHA	9/24/2024	<0.02 µg/L	0.02 µg/L	Not Detected
PFEESA	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFMBA	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFDA	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFMPA	9/24/2024	<0.004 µg/L	0.004 µg/L	Not Detected
11Cl-PF3OUdS	9/24/2024	<0.005 µg/L	0.005 µg/L	Not Detected
8:2 FTS	9/24/2024	<0.005 µg/L	0.005 µg/L	Not Detected
4:2 FTS	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFBS	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeA	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
ADONA	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
lithium	9/24/2024	<9 µg/L	9 µg/L	Not Detected
6:2 FTS	9/24/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	9/24/2024	<0.005 µg/L	0.005 µg/L	Not Detected
HFPO-DA	9/24/2024	<0.005 µg/L	0.005 µg/L	Not Detected
NMeFOSAA	9/24/2024	<0.006 µg/L	0.006 µg/L	Not Detected
NEtFOSAA	9/24/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFTA	9/24/2024	<0.008 µg/L	0.008 µg/L	Not Detected
PFDoA	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
9Cl-PF3ONS	9/24/2024	<0.002 µg/L	0.002 µg/L	Not Detected
PFUnA	9/24/2024	<0.002 µg/L	0.002 µg/L	Not Detected
PFHxS	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	9/24/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFTrDA	9/24/2024	<0.007 µg/L	0.007 µg/L	Not Detected
PFHxS	6/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	6/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFOS	6/17/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFNA	6/17/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFHpS	6/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFOA	6/17/2024	<0.004 µg/L	0.004 µg/L	Not Detected
NFDHA	6/17/2024	<0.02 µg/L	0.02 µg/L	Not Detected
ADONA	6/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHpA	6/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeS	6/17/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFDA	6/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	6/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	6/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFUnA	6/17/2024	<0.002 µg/L	0.002 µg/L	Not Detected
PFPeA	6/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
9Cl-PF3ONS	6/17/2024	<0.002 µg/L	0.002 µg/L	Not Detected
PFBA	6/17/2024	<0.005 µg/L	0.005 µg/L	Not Detected
4:2 FTS	6/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
8:2 FTS	6/17/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFMPA	6/17/2024	<0.004 µg/L	0.004 µg/L	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
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.

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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.

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