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Community Water System · PWS WA5359994

North Bainbridge Water Co

Poulsbo, Washington 98370 - drinking water served from groundwater sources to 5,490 people, tracked in EPA SDWIS and UCMR5.

5,490
People served
701
EPA violations
7
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 701 drinking-water violations at North Bainbridge Water Co, 1% of them health-based - above the Washington per-system average.

701
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
5,490
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: North Bainbridge Water Co

North Bainbridge Water Co is a local-owned community water system that delivers drinking water to 5,490 residents in Poulsbo, Washington (Kitsap County) through 1,944 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 701 total violations for this system , of which 7 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 691 monitoring and reporting violations are on file. The most recent violation on record dates to 2017.

The most frequently cited contaminant at this system is 1,2,4-Trichlorobenzene, recorded in 30 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%).

North Bainbridge Water Co's 701 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
5,490
Total Violations
701
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,944
County
Kitsap
School/Daycare
No
MCL Violations
7
Monitoring Violations
691
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
1,2,4-Trichlorobenzene MR 30 2009
cis-1,2-Dichloroethylene MR 30 2009
DICHLOROMETHANE MR 30 2009
o-Dichlorobenzene MR 30 2009
1,1-Dichloroethylene MR 30 2009
trans-1,2-Dichloroethylene MR 30 2009
1,2-Dichloroethane MR 30 2009
Trichloroethylene MR 30 2009
Toluene MR 30 2009
p-Dichlorobenzene MR 30 2009
Vinyl chloride MR 30 2009
1,1,1-Trichloroethane MR 30 2009
Carbon tetrachloride MR 30 2009
1,1,2-Trichloroethane MR 30 2009
CHLOROBENZENE MR 30 2009
Ethylbenzene MR 30 2009
Styrene MR 30 2009
1,2-Dichloropropane MR 30 2009
Tetrachloroethylene MR 30 2009
Benzene MR 30 2009
Diquat MR 7 2007
Coliform (TCR) MCL 7 1992
Nitrate MR 7 2008
OXAMYL MR 4 2007
Aldicarb sulfoxide MR 4 2007
Aldicarb sulfone MR 4 2007
Carbofuran MR 4 2007
Aldicarb MR 4 2007
Heptachlor epoxide MR 4 2007
Coliform (TCR) MR 3 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
PFTrDA 6/20/2023 <7.00 ppt 7.00 ppt Not Detected
PFOA 6/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 6/20/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 6/20/2023 <20.00 ppt 20.00 ppt Not Detected
PFOS 6/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 6/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 6/20/2023 <6.00 ppt 6.00 ppt Not Detected
PFTA 6/20/2023 <8.00 ppt 8.00 ppt Not Detected
NEtFOSAA 6/20/2023 <5.00 ppt 5.00 ppt Not Detected
PFDA 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 6/20/2023 <2.00 ppt 2.00 ppt Not Detected
PFBS 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 6/20/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 6/20/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 6/20/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 6/20/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 6/20/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 6/20/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxA 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 6/20/2023 <5.00 ppt 5.00 ppt Not Detected
PFEESA 6/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 12/18/2023 <8.00 ppt 8.00 ppt Not Detected
PFOA 12/18/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 12/18/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 12/18/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 12/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 12/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 12/18/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 12/18/2023 <6.00 ppt 6.00 ppt Not Detected
PFTrDA 12/18/2023 <7.00 ppt 7.00 ppt Not Detected
PFHxA 12/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 12/18/2023 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 12/18/2023 <5.00 ppt 5.00 ppt Not Detected
NFDHA 12/18/2023 <20.00 ppt 20.00 ppt Not Detected
PFDA 12/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 12/18/2023 <4.00 ppt 4.00 ppt Not Detected
PFEESA 12/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 12/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 12/18/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 12/18/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 12/18/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 12/18/2023 <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 North Bainbridge Water Co.

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 WA5359994 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 North Bainbridge Water Co 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
2017 Cadmium MR 2 SDWIS / WA5359994 / 1015
2017 Chromium MR 2 SDWIS / WA5359994 / 1020
2017 CYANIDE MR 2 SDWIS / WA5359994 / 1024
2017 Nitrite MR 2 SDWIS / WA5359994 / 1041
2017 Selenium MR 2 SDWIS / WA5359994 / 1045
2017 Thallium, Total MR 2 SDWIS / WA5359994 / 1085
2017 Barium MR 2 SDWIS / WA5359994 / 1010
2017 Antimony, Total MR 2 SDWIS / WA5359994 / 1074
2017 Beryllium, Total MR 2 SDWIS / WA5359994 / 1075
2017 Nickel MR 2 SDWIS / WA5359994 / 1036
2017 Mercury MR 2 SDWIS / WA5359994 / 1035
2017 Arsenic MR 2 SDWIS / WA5359994 / 1005
2017 Fluoride MR 2 SDWIS / WA5359994 / 1025
2009 1,2,4-Trichlorobenzene MR 30 SDWIS / WA5359994 / 2378
2009 cis-1,2-Dichloroethylene MR 30 SDWIS / WA5359994 / 2380

How North Bainbridge Water Co Compares

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

Metric North Bainbridge Water Co Washington avg Federal benchmark
Total violations 701 69 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 7 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 5,490 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 North Bainbridge Water Co water safe to drink? ▼
North Bainbridge Water Co (PWS ID: WA5359994) has 701 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 5,490 people using Groundwater sources.
How many people does North Bainbridge Water Co serve? ▼
North Bainbridge Water Co serves 5,490 people in Poulsbo, Washington. It is a Local-owned system using Groundwater water sources with 1,944 service connections.
What type of violations does North Bainbridge Water Co have? ▼
North Bainbridge Water Co has 701 total violations: 7 health-based violations (MCL exceedances or treatment failures), 691 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in North Bainbridge Water Co water? ▼
No. North Bainbridge Water Co was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does North Bainbridge Water Co use? ▼
North Bainbridge Water Co 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.

Read our methodology - how this data is sourced, computed, and verified.

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.