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PUBLIC WATER SYSTEM REPORT

Is OCONOMOWOC WATERWORKS Water Safe to Drink in 2026?

Wisconsin · PWSID WI2680227 · Ground water

Population served
15,805
Cities served
OCONOMOWOC
State / jurisdiction
Wisconsin (WI)
PWSID
WI2680227
F
TAP WATER GRADE
High risk
Model score 24/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
26 violation record(s) in the latest EPA SDWA quarterly snapshotPFAS compounds detected in UCMR5 monitoring

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CONTAMINANTS — EPA UCMR5 MONITORING
Compound
Level (ppt)
EPA limit
Health guideline
Status
PFBA
5.4
—
Within / n/a
Unregulated (monitored)
PFBS
4.6
—
Within / n/a
Unregulated (monitored)

Source: EPA UCMR5 · ppt = parts per trillion · MCL = enforceable limit for regulated PFAS

VIOLATIONS HISTORY (FEDERAL SNAPSHOT)

EPA’s national SDWA quarterly files associate 26 violation-related records with this system in the same reporting quarter as the utility snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.

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WHAT TO DO ABOUT IT

Based on OCONOMOWOC WATERWORKS's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.

TOP PICKS FOR OCONOMOWOC WATERWORKS
⚠ EPA violations / contaminants in monitoring data
#1
Waterdrop G3P800 RO
EDITORS PICK
Waterdrop  ·  ~$849
Tankless 800 GPD, removes 99%+ PFAS & lead, 10-stage filtration. Smart faucet TDS display.
WHY THIS FOR OCONOMOWOC WATERWORKS · Chosen for OCONOMOWOC WATERWORKS because the latest federal SDWA snapshot lists substantial violation activity. Certified reverse osmosis provides the broadest residential barrier for households that want margin beyond legal compliance.
#2
Aquasana SmartFlow RO
MOST CERTIFIED
Aquasana  ·  ~$449
WQA Gold Seal + NSF 42/53/58/401. Most certifications of any under-sink RO. Removes 90+ contaminants.
#3
AquaTru Under-Sink RO
EASIEST FILTER CHANGE
AquaTru  ·  ~$375
NSF 42/53/58 certified. Quick-change filters, no tools. Compact tankless design, 4-stage filtration.
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STAY INFORMED
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We'll notify you when new PFAS data, EPA violations, or contamination alerts affect OCONOMOWOC WATERWORKS (PWS WI2680227). One email, no spam, unsubscribe any time.

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