Watertown, WI
Contamination score
Higher = more contaminated vs. other cities.
Reported illness & cancer claims
No claims reported yet. Be the first to add one.
Claims are aggregated from public records and community reports and may be unverified. If you believe your illness is linked to local water, request a consultation.
Self-reported issues
No issues reported yet. Be the first to report one.

Public water systems
Watertown Waterworks
- PWSID:
- WI1280044
- Source:
- Ground water
- Serves:
- 23,945 people
Hickory Hill Park Llc
- PWSID:
- WI1280116
- Source:
- Ground water
- Serves:
- 31 people
Hidden Meadows
- PWSID:
- WI1140016
- Source:
- Ground water
- Serves:
- 166 people
EPA & DEP violations
Combined Radium (-226 and -228) — MCL violation
high severityHealth-basedArchivedCombined Radium (-226 and -228) MCL violation (Archived).
EPA SDWIS · MCL · Began Oct 1, 2025 · 8 months ago · Source ↗
Public Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Jul 21, 2025 · 10 months ago · Source ↗
Carbon tetrachloride — MR violation
medium severityResolvedCarbon tetrachloride MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
1,2-Dichloropropane — MR violation
medium severityResolved1,2-Dichloropropane MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
Benzene — MR violation
medium severityResolvedBenzene MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
DICHLOROMETHANE — MR violation
medium severityResolvedDICHLOROMETHANE MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
o-Dichlorobenzene — MR violation
medium severityResolvedo-Dichlorobenzene MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
Styrene — MR violation
medium severityResolvedStyrene MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
Ethylbenzene — MR violation
medium severityResolvedEthylbenzene MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
Vinyl chloride — MR violation
medium severityResolvedVinyl chloride MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
1,1-Dichloroethylene — MR violation
medium severityResolved1,1-Dichloroethylene MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
p-Dichlorobenzene — MR violation
medium severityResolvedp-Dichlorobenzene MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
Toluene — MR violation
medium severityResolvedToluene MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
CHLOROBENZENE — MR violation
medium severityResolvedCHLOROBENZENE MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
Tetrachloroethylene — MR violation
medium severityResolvedTetrachloroethylene MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
Xylenes, Total — MR violation
medium severityResolvedXylenes, Total MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
Combined Radium (-226 and -228) — MCL violation
high severityHealth-basedArchivedCombined Radium (-226 and -228) MCL violation (Archived).
EPA SDWIS · MCL · Began Jul 1, 2025 · 11 months ago · Source ↗
1,1,2-Trichloroethane — MR violation
medium severityResolved1,1,2-Trichloroethane MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
1,1,1-Trichloroethane — MR violation
medium severityResolved1,1,1-Trichloroethane MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
trans-1,2-Dichloroethylene — MR violation
medium severityResolvedtrans-1,2-Dichloroethylene MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 11 months ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.