West Allis Tap Water Quality Report
West Allis's water has 1 contaminant above EPA MCLGs. Consider using a certified water filter for additional protection.
Water system
WEST ALLIS WATERWORKS
People Served
63,240
Health-based violations since 2020
0
WEST ALLIS WATERWORKS. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
May 2025 · WEST ALLIS WATERWORKS
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is West Allis 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. West Allis's water has 1 contaminant above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
WEST ALLIS WATERWORKS, West Allis's water system, serves 63,240 people. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for WEST ALLIS WATERWORKS is from May 2025.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Wisconsin
West Allis Water Service Areas
What these numbers actually mean for West Allis, WI
We read West Allis, 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.
- 1 contaminant above EPA MCLGs and 1 contaminant with an EPA health goal detected in some samples (no level on file)
- 52 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for West Allis
Based on West Allis's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
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:
Waterdrop
A1
NSF Certified:
Flow Rate
1 gpm
Highlights:
- Performance certified
- Lower price than Philips
- Hot water dispensing
- Compact design
Removes 5 contaminants:
Whirlpool Corporation
W11256135
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.7 gpm
Removes 19 contaminants:
+14 more
Benzene, Carbofuran, Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Chlorobenzene, Cryptosporidium, Ethylbenzene, Lead, Mercury, Metolachlor, Tetrachloroethylene, Toxaphene, Turbidity
Test Your Water Quality
Professional laboratory testing provides accurate, detailed analysis of your drinking water.
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.
What West Allis's water readings can explain
Utility-reported data for West Allis includes sulfate and a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for West Allis, 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 West Allis? Public-water results do not apply to private wells. See Milwaukee County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in West Allis
West Allis's tap water measures 7.9 grains per gallon (135.0 mg/L) — hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 7.9 gpg water in West Allis — 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 West Allis Tap Water
West Allis's water has 1 contaminant above EPA MCLGs. While the water meets federal legal limits, 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 WEST ALLIS WATERWORKS. For a problem with your water now (discolored water, no water, low pressure, a leak), contact WEST ALLIS WATERWORKS directly.
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