Waukesha Tap Water Quality Report
Waukesha's water has 3 contaminants above EPA MCLGs. Consider using a certified water filter for additional protection.
1 other system serving parts of Waukesha reports results above guidelines — check which system bills you. SCHOENSTATT SISTERS OF MARY (2 above guidelines)
Other systems listed for Waukesha with results above guidelines: DURHAM MEADOWS WATER TRUST (3 above guidelines), HUNTINGTON PARK (3 above guidelines)
Water system
WAUKESHA WATER UTILITY
1 other system also serves parts of Waukesha. 2 other systems are listed for Waukesha. See their figures
People Served
70,718
Health-based violations since 2020
82
WAUKESHA WATER UTILITY. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Apr 2024 · WAUKESHA WATER UTILITY
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Waukesha Tap Water Safe to Drink?
We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems. Waukesha's water has 3 contaminants above EPA health-based guidelines (MCLGs).
WAUKESHA WATER UTILITY, Waukesha's water system, serves 70,718 people. 1 other system also serves parts of Waukesha. 2 other systems are listed for Waukesha. Each system's results are listed under its own name, never added to WAUKESHA WATER UTILITY's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for WAUKESHA WATER UTILITY is from Apr 2024.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Wisconsin
Waukesha Water Service Areas
What these numbers actually mean for Waukesha, WI
We read Waukesha, WI’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 3 contaminants above EPA MCLGs and 11 contaminants with an EPA health goal detected in some samples (no level on file)
- 151 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for Waukesha
Based on Waukesha's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
Solventum Purification Inc.
3MRO401
NSF Certified:
Daily Production
11.48 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 11.48 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 15 contaminants:
+10 more
Copper, Cryptosporidium, Fluoride, Lead, Radium 226, Radium 228, Radium, combined (-226 & -228), Selenium, Total Dissolved Solids, Turbidity
Solventum Purification Inc.
3MRO301
NSF Certified:
Daily Production
11.48 gpd
Highlights:
- NSF-58 certified reverse osmosis system
- 11.48 GPD production capacity
- Reduces total dissolved solids (TDS) for purer water
Removes 15 contaminants:
+10 more
Copper, Cryptosporidium, Fluoride, Lead, Radium 226, Radium 228, Radium, combined (-226 & -228), Selenium, Total Dissolved Solids, Turbidity
Culligan
ZeroWater
NSF Certified:
Flow Rate
1.9 gpm
Daily Production
1 gpd
Highlights:
- Compact design
- Easy to set up
- Affordable
- NSF-42, NSF-53, NSF-401 certified
Removes 19 contaminants:
+14 more
Strontium, Molybdenum, Fluoride, Uranium, Lead, Total PFAS, Chlorine, 25, Phosphorus, Bicarbonate, Calcium, Carbonate, Magnesium, Sodium
Santevia
Bath Filter
NSF Certified:
Flow Rate
0.36 gpm
Highlights:
- Organic cotton design reduces plastic used in construction
- Affordable upfront & ongoing cost
- The only bath filter that removed 100% chlorine with “normal” faster faucet flow
Removes 1 contaminants:
Verify Your Water Quality with Independent Testing
With 3 contaminants above EPA MCLGs and 11 contaminants with an EPA health goal detected in some samples (no level on file), independent laboratory testing provides a second opinion and can track changes over time.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
With 3 contaminants above health guidelines, you may want to explore water purification options. Learn how to make distilled water at home for applications like humidifiers, CPAP machines, and baby formula.
What Waukesha's water readings can explain
Utility-reported data for Waukesha includes iron, sulfate and a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Waukesha, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Waukesha? Public-water results do not apply to private wells. See Waukesha County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Waukesha
Waukesha's tap water measures 19.0 grains per gallon (325.0 mg/L) — very hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 19.0 gpg water in Waukesha — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full. For the national picture first, read what a water softener costs — equipment, installation labour and ten-year ownership, each separated out. For Wisconsin as a whole, read water softener cost in Wisconsin — priced against the plumber wage published for the state.
Frequently Asked Questions About Waukesha Tap Water
Waukesha's water has 3 contaminants above EPA MCLGs. We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach WAUKESHA WATER UTILITY. For a problem with your water now (discolored water, no water, low pressure, a leak), contact WAUKESHA WATER UTILITY directly.
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