Public water system · WI2413515
ActiveNorth Shore Water Commission
At a glance
North Shore Water Commission (PWSID WI2413515) is an active community water system in Milwaukee County, Wisconsin. It reports serving 35,598 people through 13,184 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2008.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
35,598
Service connections
13,184
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does North Shore Water Commission compare with other water systems in Milwaukee County?
By EPA's size categories, North Shore Water Commission is a large system (10,001 to 100,000 people). Milwaukee County has 85 active public water systems, and North Shore Water Commission is the 4th-largest of them by population served. Its population served is about 3.2 times the county average of 11,209 people per system, and accounts for 3.7% of the 952,731 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so North Shore Water Commission is about 5.3 times 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. Wisconsin has 1,053 active community water systems, 9.5% of the state's 11,056 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 20 Wisconsin systems (0.2%) list surface water as their primary source.
Who owns and regulates North Shore Water Commission?
EPA lists North Shore Water Commission as owned by a local government. The WI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 26 of the 85 active systems in Milwaukee County (31%) are also owned by a local government.
Does North Shore Water Commission have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2008. The violations listed here began between July 1992 and July 2008. By type: 7 monitoring and reporting, 4 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Carbon, total (3 of them). EPA lists 12 as resolved. 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 |
|---|---|---|---|---|
| 2008-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2002-12-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2002-12-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2002-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
| 2002-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
| 2002-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
| 2001-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzo(a)pyrenecode 2306 | No | Resolved |
| 1993-01-01 | Required treatment not metPublic Education · code 65 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 1992-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
The 12 most recent 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.
North Shore Water Commission: frequently asked questions
Who runs North Shore Water Commission?
North Shore Water Commission (PWSID WI2413515) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does North Shore Water Commission serve?
North Shore Water Commission reports serving 35,598 people through 13,184 service connections in Milwaukee County, Wisconsin.
Where does North Shore Water Commission get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does North Shore Water Commission have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2008. 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 North Shore Water Commission'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. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2008. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find North Shore Water Commission's water quality report?
As a community water system, North Shore Water Commission 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 Milwaukee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Milwaukee Waterworks | Milwaukee | 626,000 | Community | Surface water |
| West Allis Waterworks | Milwaukee | 63,240 | Community | Purchased surface water |
| Wauwatosa Waterworks | Milwaukee | 49,064 | Community | Purchased surface water |
| Oak Creek Waterworks | Milwaukee | 32,104 | Community | Surface water |
| Franklin Water Utility | Milwaukee | 22,500 | Community | Purchased surface water |
| South Milwaukee Waterworks | Milwaukee | 21,340 | Community | Surface water |
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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, “North Shore Water Commission, PWSID WI2413515, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/north-shore-water-commission-wi2413515 (data as of October 1, 2026).