Water Quality in Waukesha, WI (53066)
EPA violation data for public water systems serving ZIP code 53066.
Active Health Violations
57 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 98% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
37,558
Population
137
Water Systems
163
Violations (5yr)
57
Health-Based
Location
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Water Systems Serving This Area (137)
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) ✓
West Bend Waterworks
All resolved Groundwater 31,752 people served
62 violations (5yr)
· All resolved
Lead tested: 23 ppb (limit: 15 ppb)
Watertown Waterworks
All resolved Groundwater 23,945 people served
2 violations (5yr)
· All resolved
Lead tested: 11 ppb (limit: 15 ppb) ✓
Germantown Water Utility
1 health-based Groundwater 20,027 people served
2 violations (5yr)
· 1 health-based
Lead tested: 1.7 ppb (limit: 15 ppb) ✓
Oconomowoc Waterworks
Groundwater 15,805 people served
0 violations
Lead tested: 6.8 ppb (limit: 15 ppb) ✓
Concord General Store
Groundwater 807 people served
0 violations
Cross Point Community Church
Groundwater 764 people served
0 violations
Olin-Sang-Ruby Union Institute - Main System
Groundwater 704 people served
0 violations
Olin-Sang-Ruby Union Institute - Bath House
Groundwater 700 people served
0 violations
Olin-Sang-Ruby Union Institute - Dining Hall
Groundwater 700 people served
0 violations
Dotties Home Bakery & Liquor
Groundwater 567 people served
0 violations
Abundant Life Apostolic Church
All resolved Groundwater 543 people served
1 violation (5yr)
· All resolved
Lead tested: 2.69 ppb (limit: 15 ppb) ✓
Holy Trinity Church & Learning Center
Groundwater 505 people served
0 violations
Lead tested: 0.12 ppb (limit: 15 ppb) ✓
Summit School
Groundwater 500 people served
0 violations
Stone Bank School
Groundwater 470 people served
0 violations
Lead tested: 3.2 ppb (limit: 15 ppb) ✓
Lake Country Classical Academy East Campus
Groundwater 410 people served
0 violations
Lead tested: 6.5 ppb (limit: 15 ppb) ✓
Brown Street Market Place
Groundwater 384 people served
0 violations
Okauchee School
Groundwater 382 people served
0 violations
Wildcat Lodge 1
Groundwater 310 people served
0 violations
Ixonia Elementary School
All resolved Groundwater 310 people served
1 violation (5yr)
· All resolved
Lead tested: 2.15 ppb (limit: 15 ppb) ✓
Lord Of Life Lutheran Church
Groundwater 302 people served
0 violations
Lake Area Alano Club
Groundwater 300 people served
0 violations
Sunnyfield Acres
Groundwater 300 people served
0 violations
Lead tested: 0.17 ppb (limit: 15 ppb) ✓
Little Dumplings Early Learning Center
Groundwater 258 people served
0 violations
Lead tested: 3.25 ppb (limit: 15 ppb) ✓
Town & Country Ymca
Groundwater 232 people served
0 violations
Genesee Lake School South
Groundwater 230 people served
0 violations
Lead tested: 0.35 ppb (limit: 15 ppb) ✓
El Poblano Mexican-American Grill
Groundwater 220 people served
0 violations
Rogers Mem Hosp - Main Hospital
Groundwater 220 people served
0 violations
Lead tested: 0.89 ppb (limit: 15 ppb) ✓
Grace Bible Church
Groundwater 205 people served
0 violations
Kiltie Inc
All resolved Groundwater 200 people served
2 violations (5yr)
· All resolved
Dotties Citgo - Hartland
Groundwater 155 people served
0 violations
Kettle Moraine Hospital
Groundwater 145 people served
0 violations
White Stone Community Church
Groundwater 144 people served
0 violations
St Johns Lutheran Church
Groundwater 126 people served
0 violations
La Bell Golf Club
Groundwater 120 people served
0 violations
St Johns Evangelical Lutheran Church
Groundwater 119 people served
0 violations
Genesee Lake School North
All resolved Groundwater 110 people served
1 violation (5yr)
· All resolved
Lead tested: 1.15 ppb (limit: 15 ppb) ✓
Ocean Dreams
Groundwater 106 people served
0 violations
Associated Bank Of Oconomowoc
Groundwater 104 people served
0 violations
Mapleway Bowl & Restaurant
1 health-based Groundwater 100 people served
1 violation (5yr)
· 1 health-based · All resolved
Oconomowoc Lake Club
Groundwater 100 people served
0 violations
Lucky Chuckys Beach Bar And Grill
Groundwater 95 people served
0 violations
Angels Grace Hospice
Groundwater 90 people served
0 violations
Lead tested: 0.28 ppb (limit: 15 ppb) ✓
Mr Slows Saloon
Groundwater 83 people served
0 violations
Daystar Properties
All resolved Groundwater 80 people served
1 violation (5yr)
· All resolved
Lead tested: 2.25 ppb (limit: 15 ppb) ✓
The Happy Place
Groundwater 79 people served
0 violations
Gemma K'S Southern Social
Groundwater 79 people served
0 violations
Kuhtz General Store
Groundwater 78 people served
0 violations
Humdingers
Groundwater 77 people served
0 violations
Former Meadowview School
Groundwater 75 people served
0 violations
Lakeland Oldsmobile
Groundwater 74 people served
0 violations
Bank Five Nine- Brown Street
Groundwater 70 people served
0 violations
Stanton Place I
Groundwater 66 people served
0 violations
Lead tested: 4.45 ppb (limit: 15 ppb) ✓
Rogers Mem Hosp - Kubly
Groundwater 61 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓ Copper tested: 1520 ppb (limit: 1300 ppb)
Rogers Mem Hosp - Cedar Ridge Main
Groundwater 61 people served
0 violations
Lead tested: 1.45 ppb (limit: 15 ppb) ✓ Copper tested: 1950 ppb (limit: 1300 ppb)
Dillons Prairie House
Groundwater 60 people served
0 violations
Harmony Hills Mh Village 2
Groundwater 60 people served
0 violations
Hallett Veterinary Hospital
Groundwater 57 people served
0 violations
Oconomowoc Golf Club Clubhouse
Groundwater 55 people served
0 violations
Deertrak Golf Club
Groundwater 54 people served
0 violations
Oconomowoc Golf Club Restrooms
Groundwater 54 people served
0 violations
Erics Breezy Point
Groundwater 53 people served
0 violations
Kims Pizza Pub
Groundwater 53 people served
0 violations
Hideaway Bar & Grill
Groundwater 53 people served
0 violations
Faith Baptist Church - Oconomowoc
Groundwater 52 people served
0 violations
Country Drive In
Groundwater 50 people served
0 violations
Rons Cozy Corner
Groundwater 50 people served
0 violations
Private Party Inn
Groundwater 50 people served
0 violations
Cambridge Place Of Delafield
1 health-based Groundwater 50 people served
4 violations (5yr)
· 1 health-based
Lead tested: 0.2 ppb (limit: 15 ppb) ✓
Ewald Chevrolet Buick Geo
Groundwater 50 people served
0 violations
Premold Corporation
Groundwater 46 people served
0 violations
Lead tested: 0.4 ppb (limit: 15 ppb) ✓
Concord Town Hall
Groundwater 45 people served
0 violations
Brewfinity Brewing Co
Groundwater 45 people served
0 violations
Rogers Mem Hosp - Hrc
Groundwater 45 people served
0 violations
Lead tested: 0.54 ppb (limit: 15 ppb) ✓
Genesee Lake Rd Park
Groundwater 40 people served
0 violations
Pepinos Restaurant
Groundwater 40 people served
0 violations
Rogers Mem Hosp - Ladish Co Foundation Center
Groundwater 40 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Preston Pines
All resolved Groundwater 38 people served
1 violation (5yr)
· All resolved
Lead tested: 2.31 ppb (limit: 15 ppb) ✓
Venice Beach Club
Groundwater 37 people served
0 violations
Caddy Shack
Groundwater 36 people served
0 violations
Muskego Lake Aire Apartments
Groundwater 35 people served
0 violations
Lead tested: 0.72 ppb (limit: 15 ppb) ✓
Summit Town Hall
Groundwater 35 people served
0 violations
Le Rendez-Vous At The Point
Groundwater 34 people served
0 violations
Redemptorist Retreat Center
Groundwater 34 people served
0 violations
Kick Switch Bar And Grill
Groundwater 33 people served
0 violations
Oconomowoc Golf Course Maintenance Building
Groundwater 32 people served
0 violations
Stanton Place Ii
All resolved Groundwater 32 people served
1 violation (5yr)
· All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Rogers Mem Hosp - Delafield 16 Bed
Groundwater 30 people served
0 violations
Bon Bree
Groundwater 30 people served
0 violations
Okauchee Lake Roadhouse
Groundwater 28 people served
0 violations
Kennys Killin Time
Groundwater 27 people served
0 violations
Rogers Mem Hosp - Delafield 8 Bed
Groundwater 27 people served
0 violations
Kennys
Groundwater 27 people served
0 violations
St Catherines Church
Groundwater 27 people served
0 violations
Nineteenth Hole
Groundwater 26 people served
0 violations
Whiskey Waters
Groundwater 26 people served
0 violations
M Anderson American Legion Post 399
Groundwater 26 people served
0 violations
Golden Lake Pub
Groundwater 26 people served
0 violations
Rogers Mem Hosp - Herrington Bldg
Groundwater 26 people served
0 violations
Silver Lake Auto Center
Groundwater 26 people served
0 violations
Marks Country Market
Groundwater 25 people served
0 violations
Community Based Residential Facility
Groundwater 25 people served
0 violations
Wittnebels
Groundwater 25 people served
0 violations
Redemptorist Fathers Novitiate
Groundwater 25 people served
0 violations
Millers Sandy Beach
All resolved Groundwater 25 people served
2 violations (5yr)
· All resolved
Guss Cottages
Groundwater 25 people served
0 violations
Concord Park
Groundwater 25 people served
0 violations
Valley Motel
All resolved Groundwater 25 people served
12 violations (5yr)
· All resolved
Evergreens
Groundwater 25 people served
0 violations
Stockley Usa Union Grove
Groundwater 25 people served
0 violations
Mr Dees Inc
Groundwater 25 people served
0 violations
Pepinos
Groundwater 25 people served
0 violations
Northwest Machine & Grinding
Groundwater 25 people served
0 violations
St Johns Lutheran Church Cemetary
Groundwater 25 people served
0 violations
Oconomowoc Town Hall
Groundwater 25 people served
0 violations
Lake & Country Tire
Groundwater 25 people served
0 violations
Anchor Resort
Groundwater 25 people served
0 violations
Sormrud Rooms
Groundwater 25 people served
0 violations
La Belle Motel
Groundwater 25 people served
0 violations
Debs Place
Groundwater 25 people served
0 violations
Beach House
Groundwater 25 people served
0 violations
Wildflowers Restaurant
Groundwater 25 people served
0 violations
Clemens North American Resort
Groundwater 25 people served
0 violations
Lakeside Chalet
Groundwater 25 people served
0 violations
Hwy K Dental Office
Groundwater 25 people served
0 violations
Paganica Golf Course
Groundwater 25 people served
0 violations
Mariners Saloon
Groundwater 25 people served
0 violations
Olin-Sang-Ruby Union Institute - Pool Well
Groundwater 25 people served
0 violations
Stonebank M H P
Groundwater 25 people served
0 violations
Kids Land Day Care
Groundwater 25 people served
0 violations
Trimmers Family Hair Center The
Groundwater 25 people served
0 violations
Oconomowoc Sportsmans Club
Groundwater 24 people served
0 violations
St Pauls Episcopal Church
Groundwater 16 people served
0 violations
N5701 Frontier Rd Property
All resolved Groundwater 8 people served
1 violation (5yr)
· All resolved
Lead tested: 2.9 ppb (limit: 15 ppb) ✓
Lake Country Foods
Groundwater 5 people served
0 violations
Rolling Hills Country Club & Maintenance Bldg
Groundwater 0
0 violations
Ashippun Elementary School
Groundwater 0
0 violations
Contaminants Found
Revised Total Coliform RuleHealth-Based
Missed testing deadlines — not a detection of bacteria.
12 violations
All resolved
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 RULE REVISIONSHealth-Based
3 violations
All resolved
Public NoticeMonitoring
11 violations
Has active
Lead and Copper RuleMonitoring
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
4 violations
All resolved
NitrateMonitoring
At high levels, nitrate can cause blue baby syndrome in infants.
3 violations
All resolved
NitriteMonitoring
Similar to nitrate — harmful to infants at high levels.
2 violations
All resolved
StyreneMonitoring
1 violation
All resolved
1,1-DichloroethyleneMonitoring
1 violation
All resolved
SeleniumMonitoring
1 violation
All resolved
Nitrate-NitriteMonitoring
1 violation
All resolved
LASSOMonitoring
1 violation
All resolved
EndothallMonitoring
1 violation
All resolved
ToxapheneMonitoring
1 violation
All resolved
FluorideMonitoring
1 violation
All resolved
ETHYLENE DIBROMIDEMonitoring
1 violation
All resolved
Aldicarb sulfoxideMonitoring
1 violation
All resolved
TolueneMonitoring
1 violation
All resolved
ChromiumMonitoring
1 violation
All resolved
PentachlorophenolMonitoring
1 violation
All resolved
DICHLOROMETHANEMonitoring
1 violation
All resolved
2,4,5-TPMonitoring
1 violation
All resolved
ChlordaneMonitoring
1 violation
All resolved
1,2-DIBROMO-3-CHLOROPROPANEMonitoring
1 violation
All resolved
NickelMonitoring
1 violation
All resolved
p-DichlorobenzeneMonitoring
1 violation
All resolved
Carbon tetrachlorideMonitoring
1 violation
All resolved
OXAMYLMonitoring
1 violation
All resolved
1,1,2-TrichloroethaneMonitoring
1 violation
All resolved
GlyphosateMonitoring
1 violation
All resolved
CarbofuranMonitoring
1 violation
All resolved
MercuryMonitoring
1 violation
All resolved
Thallium, TotalMonitoring
1 violation
All resolved
DalaponMonitoring
1 violation
All resolved
TetrachloroethyleneMonitoring
1 violation
All resolved
TrichloroethyleneMonitoring
1 violation
All resolved
2,4-DMonitoring
1 violation
All resolved
MethoxychlorMonitoring
1 violation
All resolved
SimazineMonitoring
1 violation
All resolved
DinosebMonitoring
1 violation
All resolved
PicloramMonitoring
1 violation
All resolved
1,2-DichloroethaneMonitoring
1 violation
All resolved
CHLOROBENZENEMonitoring
1 violation
All resolved
BenzeneMonitoring
1 violation
All resolved
Aldicarb sulfoneMonitoring
1 violation
All resolved
1,2-DichloropropaneMonitoring
1 violation
All resolved
HEXACHLOROBENZENEMonitoring
1 violation
All resolved
Antimony, TotalMonitoring
1 violation
All resolved
ArsenicMonitoring
A naturally occurring element that can cause cancer and other health effects at high levels.
1 violation
All resolved
AldicarbMonitoring
1 violation
All resolved
EthylbenzeneMonitoring
1 violation
All resolved
EndrinMonitoring
1 violation
All resolved
AtrazineMonitoring
1 violation
All resolved
trans-1,2-DichloroethyleneMonitoring
1 violation
All resolved
BHC-GAMMAMonitoring
1 violation
All resolved
HeptachlorMonitoring
1 violation
All resolved
cis-1,2-DichloroethyleneMonitoring
1 violation
All resolved
BariumMonitoring
1 violation
All resolved
Vinyl chlorideMonitoring
1 violation
All resolved
Heptachlor epoxideMonitoring
1 violation
All resolved
Xylenes, TotalMonitoring
1 violation
All resolved
CadmiumMonitoring
1 violation
All resolved
Beryllium, TotalMonitoring
1 violation
All resolved
1,2,4-TrichlorobenzeneMonitoring
1 violation
All resolved
o-DichlorobenzeneMonitoring
1 violation
All resolved
1,1,1-TrichloroethaneMonitoring
1 violation
All resolved
DiquatMonitoring
1 violation
All resolved
HexachlorocyclopentadieneMonitoring
1 violation
All resolved
TTHMMonitoring
1 violation
All resolved
Total Haloacetic Acids (HAA5)Monitoring
1 violation
All resolved
Lead & Copper Levels
Lead (Pb)
Within limit0.12 ppb measured
Action level: 15 ppb
Sampled: Sep 2025
Copper (Cu)
Exceeds limit1520 ppb measured
Action level: 1300 ppb
Sampled: Jun 2022
How Does This Compare?
Waukesha (53066) has more violations than 98% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 163.
Fewer violations 98th 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
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) 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.