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LAKEHAVEN WATER AND SEWER DISTRICT

PWS ID: WA5341997 · FEDERAL WAY, Washington 98063

LAKEHAVEN WATER AND SEWER DISTRICT serves 118,273 people in FEDERAL WAY, Washington using Surface Water water sources. It has 78 recorded EPA violations, including 5 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (6 compounds found).

Water Quality Snapshot: LAKEHAVEN WATER AND SEWER DISTRICT

LAKEHAVEN WATER AND SEWER DISTRICT is a local-owned community water system that delivers drinking water to 118,273 residents in FEDERAL WAY, Washington (King County) through 46,077 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 78 total violations for this system , of which 5 (6%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 71 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Diquat, recorded in 16 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 6 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 0.0137 ppt. 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. LAKEHAVEN WATER AND SEWER DISTRICT's 78 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.

PFAS Detected

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

Population Served
118,273
Total Violations
78
Health-Based Violations
5
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
46,077
County
King
School/Daycare
No
MCL Violations
3
Monitoring Violations
71
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Diquat MR 16 2007
1,2-DIBROMO-3-CHLOROPROPANE MR 13 2007
ETHYLENE DIBROMIDE MR 13 2007
Coliform (TCR) MR 4 1992
Coliform (TCR) MCL 3 1998
Arsenic MR 2 2010
Thallium, Total MR 2 2002
Selenium MR 2 2002
Beryllium, Total MR 2 2002
Chromium MR 2 2002
CYANIDE MR 2 2002
Fluoride MR 2 2002
Barium MR 2 2002
Mercury MR 2 2002
Antimony, Total MR 2 2002
Nickel MR 2 2002
Lead and Copper Rule TT 2 1995
Cadmium MR 2 2002
Gross Alpha, Excl. Radon and U MR 1 1979
Consumer Confidence Rule Other 1 2022

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 11 of 1020 samples detected PFAS.

Contaminant Date Result MRL Status
11Cl-PF3OUdS 9/3/2024 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 9/3/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 9/3/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 9/3/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFBS 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/3/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/3/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 9/3/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 9/3/2024 <9 µg/L 9 µg/L Not Detected
PFUnA 9/3/2024 <0.002 µg/L 0.002 µg/L Not Detected
NMeFOSAA 9/3/2024 <0.006 µg/L 0.006 µg/L Not Detected
9Cl-PF3ONS 9/3/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 9/3/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 9/3/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 9/3/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/3/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/3/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/3/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 9/3/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxA 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 9/3/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/17/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFTrDA 7/17/2024 <0.007 µg/L 0.007 µg/L Not Detected
HFPO-DA 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 7/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/17/2024 <0.02 µg/L 0.02 µg/L Not Detected
ADONA 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 7/17/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 7/17/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 7/17/2024 <0.004 µg/L 0.004 µg/L Not Detected
9Cl-PF3ONS 7/17/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFTA 7/17/2024 <0.008 µg/L 0.008 µg/L Not Detected
lithium 7/17/2024 <9 µg/L 9 µg/L Not Detected
NEtFOSAA 7/17/2024 <0.005 µg/L 0.005 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 LAKEHAVEN WATER AND SEWER DISTRICT.

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 WA5341997 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 LAKEHAVEN WATER AND SEWER DISTRICT 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
2022 Consumer Confidence Rule Other 1 SDWIS / WA5341997 / 7000
2010 Arsenic MR 2 SDWIS / WA5341997 / 1005
2007 Diquat MR 16 SDWIS / WA5341997 / 2032
2007 1,2-DIBROMO-3-CHLOROPROPANE MR 13 SDWIS / WA5341997 / 2931
2007 ETHYLENE DIBROMIDE MR 13 SDWIS / WA5341997 / 2946
2002 Thallium, Total MR 2 SDWIS / WA5341997 / 1085
2002 Selenium MR 2 SDWIS / WA5341997 / 1045
2002 Beryllium, Total MR 2 SDWIS / WA5341997 / 1075
2002 Chromium MR 2 SDWIS / WA5341997 / 1020
2002 CYANIDE MR 2 SDWIS / WA5341997 / 1024
2002 Fluoride MR 2 SDWIS / WA5341997 / 1025
2002 Barium MR 2 SDWIS / WA5341997 / 1010
2002 Mercury MR 2 SDWIS / WA5341997 / 1035
2002 Antimony, Total MR 2 SDWIS / WA5341997 / 1074
2002 Nickel MR 2 SDWIS / WA5341997 / 1036

How LAKEHAVEN WATER AND SEWER DISTRICT Compares

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

Metric LAKEHAVEN WATER AND SEWER DISTRICT Washington avg Federal benchmark
Total violations 78 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 5 4.5 Indicates a contaminant exceeded a federal MCL
PFAS detection 6 compounds 39.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 118,273 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 LAKEHAVEN WATER AND SEWER DISTRICT water safe to drink? ▼
LAKEHAVEN WATER AND SEWER DISTRICT (PWS ID: WA5341997) has 78 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 6 PFAS compounds found. This system serves 118,273 people using Surface Water sources.
How many people does LAKEHAVEN WATER AND SEWER DISTRICT serve? ▼
LAKEHAVEN WATER AND SEWER DISTRICT serves 118,273 people in FEDERAL WAY, Washington. It is a Local-owned system using Surface Water water sources with 46,077 service connections.
What type of violations does LAKEHAVEN WATER AND SEWER DISTRICT have? ▼
LAKEHAVEN WATER AND SEWER DISTRICT has 78 total violations: 5 health-based violations (MCL exceedances or treatment failures), 71 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in LAKEHAVEN WATER AND SEWER DISTRICT water? ▼
Yes. UCMR5 testing detected 6 PFAS compounds in LAKEHAVEN WATER AND SEWER DISTRICT's water supply: PFOS, PFHxS, PFPeA, PFHpA, PFHxA, and others. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does LAKEHAVEN WATER AND SEWER DISTRICT use? ▼
LAKEHAVEN WATER AND SEWER DISTRICT 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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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial