TapWaterMap

WI / Milwaukee

WI · Tap water records

Milwaukee tap water, in plain English

Here is what the EPA's own data shows about tap water in Milwaukee. According to EPA SDWIS data retrieved July 2026, Milwaukee is served by 21 active community water systems, together reported to serve about 678,542 people.

As of July 2026, EPA records show 354 violations across the community water system(s) serving Milwaukee, going back to the earliest EPA record. 22 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.

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What the EPA has on record, by system

Milwaukee Waterworks

626,000 served · surface water · PWSID WI2410100

North Shore Water Commission

35,598 served · surface water · PWSID WI2413515

Whitefish Bay Waterworks

14,272 served · surface water · PWSID WI2410597

Robert William Park Water Association Inc

1,065 served · groundwater · PWSID WI2410589

Pioneer Estates Of Delavan

400 served · groundwater · PWSID WI2650116

Beechwood Farms Estates

300 served · groundwater · PWSID WI2460791

Emerald Woods Condos

150 served · groundwater · PWSID WI2685370

Laurel Lakes 608

80 served · groundwater · PWSID WI2460137

Grand Ave Apartments

80 served · groundwater · PWSID WI2460640

Linden Lane Apts 141

75 served · groundwater · PWSID WI2460154

Williamsburg 207 209 And 214

70 served · groundwater · PWSID WI2460147

Mission Lakes Ii

68 served · groundwater · PWSID WI2685839

Lakeview Heights Mobile Home Park

66 served · groundwater · PWSID WI4310284

Laurel Lakes 508

50 served · groundwater · PWSID WI2460150

Williamsburg 206

48 served · groundwater · PWSID WI2460148

Parkview Apartments

45 served · groundwater · PWSID WI1280055

Heidel Rd Apts 139

40 served · groundwater · PWSID WI2460152

Heidel Rd Apts 152

40 served · groundwater · PWSID WI2460158

River Springs Apartments Llc

38 served · groundwater · PWSID WI2520193

Williamsburg 220

32 served · groundwater · PWSID WI2460067

River Garden Apts

25 served · groundwater · PWSID WI2460139

What this means

A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.

This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.

Source: U.S. EPA Envirofacts SDWIS, retrieved July 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.