Watertown, WI: 3 Violations - Home Safety 66/100
2 ZIP codes · 3 water systems · Updated
ZipCheckup grade for Watertown: C.
A mixed picture - some signals here are worth your attention.
Watertown, WI: a C, mid-scale.
How Watertown Compares
Data: EPA SDWIS
Key Facts for Watertown Residents
- Your city's water systems recorded 3 violations since 2021.
- Average of reported 90th-percentile lead results: 0.011 mg/L.
- Homes built before 1986: 66% - older plumbing may contain lead solder.
- Health risk index (ZipCheckup composite of CDC data): 13.14.
Watertown's Water Providers
Counting every public water system linked to Watertown, WI in federal data gives 3. The list below keeps the 3 largest by reported population served, a figure that covers each system's whole service area rather than the city alone. A household's own supplier is named on its water bill.
- C
- C
Overview
We track home safety data for 2 ZIP codes in Watertown, Wisconsin, covering 3 community water systems serving approximately 29,656 people. The EPA snapshots used for this build directly map water systems to 2 of 2 ZIP codes.
2 of 2 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Watertown: C (66/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Watertown water systems draw from: Groundwater.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0110 mg/L (EPA action level: 0.015 mg/L)
- 0 of 2 ZIP codes with known status exceed the EPA lead action level
Radon Risk
2 of 2 ZIP records with known zones are in EPA Radon Zone 1.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 3 | 2 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 3 | 2 |
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 53094 | C | 3 | 0 | Watertown Waterworks |
| 53098 | — | 2 | 0 | Watertown Waterworks |
All ZIP Codes in Watertown
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Watertown Community Health Snapshot
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Watertown's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Watertown Infrastructure Age
With 66% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Renovation history matters as much as age: in Watertown, with a median build year of 1970, some older homes have been replumbed and some have not.
Over half of homes in Watertown were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Watertown: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead results averaged across Watertown ZIP codes reach 10 ppb or more; about 66% of the housing predates 1986.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Watertown: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Watertown contains 51 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $28,861. Among ZIP codes with claim records, 50% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
What You Can Do in Watertown
- Test your water at home. City-level data shows averages - your tap may differ. Consider testing your home's tap water for lead, since household plumbing can affect its level.
- Install a certified water filter. For Haloacetic Acids (HAA5), listed in the water-quality records for Watertown: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
- Check your home's plumbing. With 66% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Watertown, WI