WATERTOWN WATERWORKS
Watertown, WI · 23,945 served
WATERTOWN WATERWORKS serves 23,945 people in Watertown, WI. It has 0 health-based violations in the last 5 years. TapGraded gives this system a B.
Score breakdown
Health-based violations (5y)
0
Monitoring violations (5y)
2
Currently unaddressed
0
Overall score
81/100
Violation history (last 5 years)
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Lead (Lead and Copper Rule)
EPA's current lead action level is 15 ppb (dropping to 10 ppb in 2027 under the Lead and Copper Rule Improvements).
Latest EPA Lead and Copper Rule 90th-percentile reading (monitoring period ending September 30, 2024).
PFAS (UCMR5 occurrence data)
System details
- System type
- Community water system
- Water source
- Ground water
- Ownership
- Local government
- Service connections
- 8,708
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Is Watertown, WI tap water safe to drink?
WATERTOWN WATERWORKS has 0 health-based violations in the last 5 years. TapGraded gives this system a B. A Tap Grade summarizes public EPA compliance records; it is not a determination that water is safe or unsafe to drink.
Does WATERTOWN WATERWORKS have lead in its water?
The most recent 90th-percentile lead sample is 11 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in WATERTOWN WATERWORKS's water?
This system was tested under UCMR5 and no PFAS was detected above the reporting limit in the analytes we track.
Source: EPA SDWIS/ECHO · Data as of 2026Q2
TapGraded presents public EPA data for information only — it is not health advice and not a determination that any water is safe or unsafe to drink. For health concerns, contact your water utility or local health department.