Seneca, IL: 8 Violations - Home Safety Score unavailable
1 ZIP code · 3 water systems · Updated
Data: EPA SDWIS
Seneca Water: The Quick Version
- Your city's water systems recorded 8 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0191 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average.
- Homes built before 1986: 58% - older plumbing may contain lead solder.
- Estimated remediation: $3,780 per household.
- Health risk index (ZipCheckup composite of CDC data): 13.79.
Water Systems Serving Seneca
Sorted by reported population served, the top 3 of 3 public water systems mapped to Seneca, IL appear below, each with its own federal compliance record.
Overview
We track home safety data for 1 ZIP code in Seneca, Illinois (population ~3,320), covering 3 community water systems serving approximately 26,414 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.
Water Sources
Seneca water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0191 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 of 1 ZIP code with known status exceed the EPA lead action level
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Lead and Copper Rule Revisions | Treatment Technique | 6 | 1 |
| Consumer Confidence Rule | Reporting | 4 | 1 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | 1 |
| Public Notice Rule | Reporting | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 61360 | — | 8 | 1 | Marseilles |
All ZIP Codes in Seneca
- 61360 - 8 violations ⚠
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.
CDC Health Data for Seneca
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
Key Contaminants Detected in Seneca
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Seneca's Housing Stock?
With 58% 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
Pre-1986 homes make up a large part of Seneca's housing; median build year 1972.
Over half of homes in Seneca 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.
Seneca: Remediation Cost in Perspective
Estimated remediation in Seneca takes up a moderate slice of home value on a scale that runs from low (1% or less) to elevated (above 2%).
Estimated remediation costs in Seneca can be compared with local home values. The estimated $2,470–$5,240 range is a planning estimate; get a property-specific quote and check it against your budget. Home values are 31% above the Illinois average.
Protecting Children from Lead in Seneca
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.
Over 15 micrograms per liter: the mean of Seneca's ZIP-level lead results. Older-than-1986 homes make up 58% of the stock.
1 ZIP code (100% of the city's ZIP records) is served by a water system whose 90th-percentile lead result exceeds the EPA action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Seneca
Historical NFIP data for Seneca contains 25 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $28,027. Among ZIP codes with claim records, 100% 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. The $3,780 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
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.
Deep Dive Reports
Detailed analysis for Seneca, IL