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Community Water System · PWS WA5384770

Sultan Water Department

Sultan, Washington 98294 - drinking water served from surface water sources to 7,160 people, tracked in EPA SDWIS and UCMR5.

7,160
People served
92
EPA violations
36
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 92 drinking-water violations at Sultan Water Department, 39% of them health-based - above the Washington per-system average.

92
Total EPA violations on record
39%
Health-based (MCL / treatment failure)
7,160
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Sultan Water Department

Sultan Water Department is a local-owned community water system that delivers drinking water to 7,160 residents in Sultan, Washington (Snohomish County) through 2,920 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 92 total violations for this system , of which 36 (39%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 51 monitoring and reporting violations are on file. The most recent violation on record dates to 2010.

The most frequently cited contaminant at this system is Surface Water Treatment Rule, recorded in 32 violations (TT, health-based). 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%).

Sultan Water Department's 92 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
7,160
Total Violations
92
Health-Based Violations
36
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
2,920
County
Snohomish
School/Daycare
No
MCL Violations
4
Monitoring Violations
51
Treatment Tech Violations
32

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule TT 32 2000
Surface Water Treatment Rule MR 16 1995
Coliform (TCR) MR 6 1998
Coliform (TCR) MCL 4 1992
Consumer Confidence Rule Other 3 2010
Styrene MR 1 2007
1,1-Dichloroethylene MR 1 2007
Selenium MR 1 1979
o-Dichlorobenzene MR 1 2007
Nitrate MR 1 1979
Cadmium MR 1 1979
Tetrachloroethylene MR 1 2007
Ethylbenzene MR 1 2007
Trichloroethylene MR 1 2007
p-Dichlorobenzene MR 1 2007
DICHLOROMETHANE MR 1 2007
Chromium MR 1 1979
Toluene MR 1 2007
1,1,1-Trichloroethane MR 1 2007
Mercury MR 1 1979
Fluoride MR 1 1979
Gross Alpha, Excl. Radon and U MR 1 1979
Carbon tetrachloride MR 1 2007
cis-1,2-Dichloroethylene MR 1 2007
1,1,2-Trichloroethane MR 1 2007
trans-1,2-Dichloroethylene MR 1 2007
Arsenic MR 1 1979
Vinyl chloride MR 1 2007
CHLOROBENZENE MR 1 2007
Barium MR 1 1979

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 174 samples detected PFAS.

Contaminant Date Result MRL Status
PFTrDA 9/23/2025 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 9/23/2025 <5.00 ppt 5.00 ppt Not Detected
NFDHA 9/23/2025 <20.00 ppt 20.00 ppt Not Detected
PFBA 9/23/2025 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 9/23/2025 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/23/2025 <5.00 ppt 5.00 ppt Not Detected
PFMPA 9/23/2025 <4.00 ppt 4.00 ppt Not Detected
PFPeA 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 9/23/2025 <6.00 ppt 6.00 ppt Not Detected
PFEESA 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
PFTA 9/23/2025 <8.00 ppt 8.00 ppt Not Detected
PFPeS 9/23/2025 <4.00 ppt 4.00 ppt Not Detected
ADONA 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/23/2025 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/23/2025 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/23/2025 <2.00 ppt 2.00 ppt Not Detected
HFPO-DA 9/23/2025 <5.00 ppt 5.00 ppt Not Detected
PFMBA 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
PFBS 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxS 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/23/2025 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/23/2025 <4.00 ppt 4.00 ppt Not Detected
PFOA 9/23/2025 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpS 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/23/2025 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 6/24/2025 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 6/24/2025 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 6/24/2025 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 6/24/2025 <7.00 ppt 7.00 ppt Not Detected
PFTA 6/24/2025 <8.00 ppt 8.00 ppt Not Detected
PFPeS 6/24/2025 <4.00 ppt 4.00 ppt Not Detected
NFDHA 6/24/2025 <20.00 ppt 20.00 ppt Not Detected
PFEESA 6/24/2025 <3.00 ppt 3.00 ppt Not Detected
PFMBA 6/24/2025 <3.00 ppt 3.00 ppt Not Detected
PFMPA 6/24/2025 <4.00 ppt 4.00 ppt Not Detected
PFHpS 6/24/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxA 6/24/2025 <3.00 ppt 3.00 ppt Not Detected
PFBS 6/24/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 6/24/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxS 6/24/2025 <3.00 ppt 3.00 ppt Not Detected
PFNA 6/24/2025 <4.00 ppt 4.00 ppt Not Detected
PFOS 6/24/2025 <4.00 ppt 4.00 ppt Not Detected
PFOA 6/24/2025 <4.00 ppt 4.00 ppt Not Detected
PFDA 6/24/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 6/24/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 6/24/2025 <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 Sultan 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 WA5384770 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 Sultan 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
2010 Consumer Confidence Rule Other 3 SDWIS / WA5384770 / 7000
2007 Styrene MR 1 SDWIS / WA5384770 / 2996
2007 1,1-Dichloroethylene MR 1 SDWIS / WA5384770 / 2977
2007 o-Dichlorobenzene MR 1 SDWIS / WA5384770 / 2968
2007 Tetrachloroethylene MR 1 SDWIS / WA5384770 / 2987
2007 Ethylbenzene MR 1 SDWIS / WA5384770 / 2992
2007 Trichloroethylene MR 1 SDWIS / WA5384770 / 2984
2007 p-Dichlorobenzene MR 1 SDWIS / WA5384770 / 2969
2007 DICHLOROMETHANE MR 1 SDWIS / WA5384770 / 2964
2007 Toluene MR 1 SDWIS / WA5384770 / 2991
2007 1,1,1-Trichloroethane MR 1 SDWIS / WA5384770 / 2981
2007 Carbon tetrachloride MR 1 SDWIS / WA5384770 / 2982
2007 cis-1,2-Dichloroethylene MR 1 SDWIS / WA5384770 / 2380
2007 1,1,2-Trichloroethane MR 1 SDWIS / WA5384770 / 2985
2007 trans-1,2-Dichloroethylene MR 1 SDWIS / WA5384770 / 2979

How Sultan Water Department Compares

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

Metric Sultan Water Department Washington avg Federal benchmark
Total violations 92 69 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 36 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 7,160 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 Sultan Water Department water safe to drink?
Sultan Water Department (PWS ID: WA5384770) has 92 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 7,160 people using Surface Water sources.
How many people does Sultan Water Department serve?
Sultan Water Department serves 7,160 people in Sultan, Washington. It is a Local-owned system using Surface Water water sources with 2,920 service connections.
What type of violations does Sultan Water Department have?
Sultan Water Department has 92 total violations: 36 health-based violations (MCL exceedances or treatment failures), 51 monitoring/reporting violations, and 32 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Sultan Water Department water?
No. Sultan Water Department was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Sultan Water Department use?
Sultan 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.