Public water system · WA5397650
ActiveBainbridge Island City of
At a glance
City of Bainbridge Island (PWSID WA5397650) is an active community water system in Kitsap County, Washington. It reports serving 13,491 people through 4,772 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in November 2000.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
13,491
Service connections
4,772
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Bainbridge Island compare with other water systems in Kitsap County?
By EPA's size categories, City of Bainbridge Island is a large system (10,001 to 100,000 people). Kitsap County has 220 active public water systems. Its population served is about 8.6 times the county average of 1,560 people per system, and accounts for 3.9% of the 343,203 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Bainbridge Island is about twice that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Washington has 2,392 active community water systems, 51% of the state's 4,705 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 4,370 Washington systems (93%) list groundwater as their primary source.
Who owns and regulates City of Bainbridge Island?
EPA lists City of Bainbridge Island as owned by a local government. The WA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 49 of the 220 active systems in Kitsap County (22%) are also owned by a local government.
Does City of Bainbridge Island have drinking water violations?
EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in November 2000. The violations listed here began between October 1979 and November 2000. By type: 3 contaminant level above the legal limit and 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 4 as archived and 1 as resolved. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2000-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2000-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1996-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1994-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 5 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
City of Bainbridge Island: frequently asked questions
Who runs City of Bainbridge Island?
City of Bainbridge Island (PWSID WA5397650) is a community water system owned by a local government. It is regulated by the WA state drinking water program.
How many people does City of Bainbridge Island serve?
City of Bainbridge Island reports serving 13,491 people through 4,772 service connections in Kitsap County, Washington.
Where does City of Bainbridge Island get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does City of Bainbridge Island have any drinking water violations?
EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in November 2000. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is City of Bainbridge Island's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in November 2000. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.
Where can I find City of Bainbridge Island's water quality report?
As a community water system, City of Bainbridge Island must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Kitsap County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bremerton City of | Kitsap | 72,951 | Community | Surface water |
| Silverdale Water Dist 16 | Kitsap | 35,163 | Community | Groundwater |
| West Sound Utility District #1 | Kitsap | 28,930 | Community | Groundwater |
| North Perry Ave Water District | Kitsap | 24,402 | Community | Groundwater |
| Poulsbo City of | Kitsap | 18,400 | Community | Groundwater |
| Naval Base Kitsap at Bangor | Kitsap | 16,828 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Bainbridge Island City of, PWSID WA5397650, Washington”, https://aquacensus.com/water-systems/washington/bainbridge-island-city-of-wa5397650 (data as of October 1, 2026).