Water Quality in Waukesha, WI (53186)
EPA violation data for public water systems serving ZIP code 53186.
Active Health Violations
56 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 96% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
33,374
Population
81
Water Systems
92
Violations (5yr)
56
Health-Based
Location
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Water Systems Serving This Area (81)
Waukesha Water Utility
54 health-based Purchased surface water 70,718 people served
69 violations (5yr)
· 54 health-based
Lead tested: 0.56 ppb (limit: 15 ppb) ✓
Elmbrook Church
Groundwater 1,099 people served
0 violations
Walgreens In Mequon
Groundwater 912 people served
0 violations
St Johns Lutheran Church
Groundwater 803 people served
0 violations
Zorbas Restaurant & Lounge
Groundwater 690 people served
0 violations
Rose Glen Elementary
All resolved Groundwater 652 people served
3 violations (5yr)
· All resolved
Copper tested: 2700 ppb (limit: 1300 ppb) Lead tested: 60 ppb (limit: 15 ppb)
Lake Drive Water Trust
All resolved Groundwater 500 people served
2 violations (5yr)
· All resolved
Lead tested: 0.48 ppb (limit: 15 ppb) ✓
Pleasant Hill School
Groundwater 369 people served
0 violations
New China Buffet
Groundwater 305 people served
0 violations
Beatrice Cheese Inc
Groundwater 300 people served
0 violations
Country Inn
Groundwater 200 people served
0 violations
Christ The Servant Lutheran
Groundwater 200 people served
0 violations
Pines Subdivision
1 health-based Groundwater 200 people served
4 violations (5yr)
· 1 health-based
Lead tested: 0.14 ppb (limit: 15 ppb) ✓
Dalums Utility Co
Groundwater 200 people served
0 violations
Sentry Food Stores
Groundwater 125 people served
0 violations
Green Bay Packaging Baird Display
Groundwater 110 people served
0 violations
Lead tested: 0.38 ppb (limit: 15 ppb) ✓
Jacks Pantry Cafe
Groundwater 102 people served
0 violations
Catholic Memorial Sullivan Campus
All resolved Groundwater 102 people served
1 violation (5yr)
· All resolved
Husco International
Groundwater 100 people served
0 violations
Townsend Business Center
Groundwater 100 people served
0 violations
St Augustine School
1 health-based Groundwater 81 people served
6 violations (5yr)
· 1 health-based
Lead tested: 27.66 ppb (limit: 15 ppb)
Neyler Color Lith Co Inc
Groundwater 75 people served
0 violations
St Augustine School
Groundwater 71 people served
0 violations
Bay San Company Inc
Groundwater 62 people served
0 violations
Douglas Plaza South
Groundwater 62 people served
3 violations (5yr)
Lead tested: 2.85 ppb (limit: 15 ppb) ✓
Payne & Dolan
Groundwater 60 people served
0 violations
Loft, The & Mary Maids Cleaning Service
Groundwater 55 people served
0 violations
Grand Fox Trailer Court
Groundwater 53 people served
0 violations
Kims Lakeside
Groundwater 52 people served
0 violations
Stone Ridge Mobil Mart
Groundwater 50 people served
0 violations
Buckhorn Resort 5 W Bath
Groundwater 50 people served
0 violations
Buckhorn Resort East Bathhouse
Groundwater 50 people served
0 violations
Wi Electric Power Co Waukesha
Groundwater 50 people served
0 violations
Buckhorn Resort Bathroom Laundry Gameroom
Groundwater 50 people served
0 violations
Bobcat Express
Groundwater 50 people served
0 violations
Buckhorn Resort 3 E Bath
Groundwater 50 people served
0 violations
Kiefer Corp
Groundwater 45 people served
0 violations
Aliotas On Bluemound
Groundwater 40 people served
0 violations
Enterprise Rent-A-Car
Groundwater 38 people served
0 violations
Bazaar Factory Outlet & Brookfield Com C
Groundwater 35 people served
0 violations
Douglas Plaza North
Groundwater 30 people served
4 violations (5yr)
Lead tested: 4.5 ppb (limit: 15 ppb) ✓
Aladdin Engineering & Manufacturing Inc
Groundwater 30 people served
0 violations
Rip Van Winkle 7
Groundwater 30 people served
0 violations
Rip Van Winkle 9
Groundwater 30 people served
0 violations
Rip Van Winkle 10
Groundwater 29 people served
0 violations
Lookout Drive Water Assoc
Purchased groundwater 28 people served
0 violations
Dairyland - Hamilton Inc
Groundwater 26 people served
0 violations
Purity/Bethesda
Groundwater 25 people served
0 violations
Bartz Display Inc
Groundwater 25 people served
0 violations
Teddys Auto Sales
Groundwater 25 people served
0 violations
Regency Court 250
Groundwater 25 people served
0 violations
Foster Court Offices & Warehouses
Groundwater 25 people served
0 violations
Vacant Lot 18795 W Bluemound Rd
Groundwater 25 people served
0 violations
Kerns Carpet
Groundwater 25 people served
0 violations
Industrial Building
Groundwater 25 people served
0 violations
Andreas Red Rooster
Groundwater 25 people served
0 violations
Pughs 31 & 11
Groundwater 25 people served
0 violations
Town Of Brookfield San Dist #3
Groundwater 25 people served
0 violations
All Seasons Equipment Inc
Groundwater 25 people served
0 violations
Kwik Trip
Groundwater 25 people served
0 violations
Milella John Private Residence
Groundwater 25 people served
0 violations
Donovan Mirror Glass
Groundwater 25 people served
0 violations
Bluemound Commerce Ctr
Groundwater 25 people served
0 violations
Decanio Builders
Groundwater 25 people served
0 violations
Aaron Piano Co
Groundwater 25 people served
0 violations
Brookfield Town Hall
Groundwater 25 people served
0 violations
Waukesha Town Hall
Groundwater 25 people served
0 violations
Brahm & Kass Private Residence
Groundwater 25 people served
0 violations
Midwest Oil Co
Groundwater 25 people served
0 violations
Buckhorn Resort 4 Pine Dr
Groundwater 25 people served
0 violations
Ray Webers Service & Towing
Groundwater 25 people served
0 violations
Swing Time
Groundwater 25 people served
0 violations
Speedway Inn
Groundwater 25 people served
0 violations
Dupys
Groundwater 25 people served
0 violations
Drexel Carpets
Groundwater 25 people served
0 violations
Kroeger Properties Buildings
Groundwater 25 people served
0 violations
Fieldstone Inn Private Residence
Groundwater 25 people served
0 violations
Waukesha County Airport
Groundwater 25 people served
0 violations
Algiers Hotel
Groundwater 25 people served
0 violations
D M T Corp & D M T World Trade Inc
Groundwater 25 people served
0 violations
Broad-A Corporation
Groundwater 3 people served
0 violations
Contaminants Found
Combined Radium (-226 and -228)Health-Based
11 violations
All resolved
Gross Alpha, Excl. Radon and UHealth-Based
9 violations
All resolved
Lead and Copper RuleHealth-Based
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
6 violations
All resolved
LEAD AND COPPER RULE REVISIONSHealth-Based
4 violations
Has active
Public NoticeMonitoring
8 violations
Has active
Revised Total Coliform RuleMonitoring
Missed testing deadlines — not a detection of bacteria.
5 violations
All resolved
Consumer Confidence RuleMonitoring
Annual water quality report delivery requirement.
3 violations
Has active
Lead & Copper Levels
Lead (Pb)
Exceeds limit60 ppb measured
Action level: 15 ppb
Sampled: Sep 2025
Copper (Cu)
Exceeds limit2700 ppb measured
Action level: 1300 ppb
Sampled: Sep 2025
How Does This Compare?
Waukesha (53186) has more violations than 96% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 92.
Fewer violations 96th percentile More violations
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.