What is in the water at 53188

PEWAUKEE CITY WATER AND SEWER UTILITY

PWSID WI2680214 · WI · serves 8,671 people · service area inferred by a model, not supplied by the state

PFAS and lithium

11 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 45 samples.

A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.

Health-based violations

11 open health-based violation(s) recorded in SDWIS and not yet returned to compliance.

• MCL · contaminant code 4010 · began 2019-07-01
• MCL · contaminant code 4000 · began 2023-10-01
• MCL · contaminant code 4000 · began 2024-01-01
• MCL · contaminant code 4000 · began 2024-04-01
• MCL · contaminant code 4000 · began 2024-07-01
• MCL · contaminant code 4000 · began 2024-10-01
• MCL · contaminant code 4000 · began 2025-01-01
• MCL · contaminant code 4000 · began 2025-04-01

Hardness

No hardness measurement. Hardness is measured at environmental monitoring stations, and none fell inside this system’s service area. That is a gap in where monitoring happens, not a finding about the water.

WAUKESHA WATER UTILITY

PWSID WI2680238 · WI · serves 70,718 people

PFAS and lithium

Sampled, nothing detected. Tested for 30 compounds under UCMR 5 with none found at or above its reporting limit. A reporting limit is the lowest concentration the method can measure, so this means “below that” rather than “zero”.

Health-based violations

23 open health-based violation(s) recorded in SDWIS and not yet returned to compliance.

• MCL · contaminant code 4030 · began 2016-01-01
• MCL · contaminant code 4030 · began 2016-01-01
• MCL · contaminant code 4030 · began 2016-04-01
• MCL · contaminant code 4030 · began 2016-04-01
• MCL · contaminant code 4030 · began 2016-07-01
• MCL · contaminant code 4030 · began 2016-10-01
• MCL · contaminant code 4030 · began 2017-01-01
• MCL · contaminant code 4030 · began 2017-04-01

Hardness

We do not state a hardness for any system, and this is why. Hardness here would come from environmental monitoring stations that happen to sit inside your water system’s service area. We checked that method against the figures twenty large utilities publish about their own supply: it agreed with the utility fewer than half the time, and where it was wrong it usually read HIGH. Cities supplied from a distant watershed came off worst, because the stations end up sampling local groundwater nobody drinks. We are paid a referral fee when somebody asks for an installer, so a number that overstates hardness is the last error we are willing to publish. Your utility publishes its own hardness in its annual water quality report, and that figure is the one to trust.