Is West Allis, WI Tap Water Safe to Drink?
West Allis, WI tap water currently meets EPA health guidelines across all monitored ZIP codes in this dataset. Contaminants including lithium have been detected at or below guideline thresholds.
Where Does West Allis Get Its Water?
Water in West Allis, WI is provided by 2 public water systems: WEST ALLIS WATERWORKS and MILWAUKEE WATERWORKS.
How Is West Allis Tap Water Treated?
Treated water is disinfected using free chlorine and ozone. Treatment includes conventional treatment (coagulation, flocculation, and filtration).
What's in West Allis Tap Water?
The following contaminants were detected most frequently in West Allis public water systems. All detected levels fall at or below EPA health guidelines in this dataset.
| Contaminant | Peak detected | EPA guideline | ZIPs detected | Status |
|---|---|---|---|---|
| lithium | 9 µg/L | — | 0 ZIPs | Within guideline |
| PFTrDA | 0.007 µg/L | — | 0 ZIPs | Within guideline |
| 6:2 FTS | 0.005 µg/L | 0.005 µg/L | 2 ZIPs | Within guideline |
| 8:2 FTS | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| PFBA | 0.005 µg/L | — | 0 ZIPs | Within guideline |
Health Risk Profile for West Allis
Current EPA monitoring data for West Allis shows contaminant levels within guideline thresholds across all ZIP codes in this dataset. As with all public water systems, sensitive populations may choose to use a certified filter for additional peace of mind.
Best Broad-Spectrum Filters for This Water Profile
This city profile includes PFAS detections, chlorine disinfection, and other dissolved contaminants. Reverse osmosis (RO) systems certified under NSF/ANSI 58 provide broad reduction coverage; for PFAS specifically, confirm NSF/ANSI P473 or equivalent PFAS reduction certification.
8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.
See recommendations matched to your exact address: choose your ZIP code below.
Frequently Asked Questions about West Allis Tap Water
Is West Allis tap water safe to drink?
West Allis tap water currently meets EPA health guidelines across all monitored ZIP codes in this dataset. Sensitive populations may still choose to use a certified filter as a precaution.
What contaminants are in West Allis tap water?
The most commonly detected contaminants in West Allis water systems include: lithium, PFTrDA, 6:2 FTS. See the ZIP-level reports for exact measurements and EPA guideline comparisons.
Where does West Allis get its drinking water?
West Allis receives water from 2 public water systems, including WEST ALLIS WATERWORKS.
Do I need a water filter in West Allis?
Current data does not show guideline exceedances in West Allis. A certified filter can still reduce trace contaminants and improve taste for households that prefer filtered water.
How often is West Allis tap water tested?
Public water systems in West Allis are required by the EPA to test for regulated contaminants on schedules ranging from daily (for microbials and disinfectants) to annual or triennial (for many chemical contaminants). Results are published in annual Consumer Confidence Reports (CCRs). The data on this page reflects the most recent available EPA monitoring results, with the latest sample date of 2025-07-01.
Tap water reports by ZIP in West Allis
- 53214 - West Milwaukee, West Allis tap water report Some concern
- 53227 - Milwaukee, West Allis tap water report Some concern
Water utilities serving West Allis, WI
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- WEST ALLIS WATERWORKSSome concern