Corunna, IN: 1 Violation — 88/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
Tap water in Corunna, IN scores well — low violation counts, above-average safety grade.
How Corunna Compares
Data: EPA SDWIS Last verified: 2026-06-03
Corunna Water: The Quick Version
- Your city's water systems recorded 1 violation in the past 5 years.
- Average lead level: 0.0026 mg/L.
- Homes built before 1986: 65% — older plumbing may contain lead solder.
- CDC health risk index: 14.65 — above typical levels.
Water Systems Serving Corunna
3 independent water providers serve Corunna, IN — 3 systems appear in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Corunna, Indiana (population ~1,183), covering 3 community water systems serving approximately 3,480 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Corunna: A (88/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Corunna water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0026 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 46730 | A | 1 | 0 | Waterloo Water Works |
All ZIP Codes in Corunna
- 46730 [A] — 1 violation
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
Updated daily.
CDC Health Data for Corunna
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Corunna
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Corunna's Housing Stock?
With 65% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Because the majority of Corunna's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1976 reflects a city where lead-era plumbing materials are common rather than exceptional.
Over half of homes in Corunna were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Protecting Children from Lead in Corunna
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Older stock in Corunna represents 65% of the inventory, and citywide monitoring runs at or above the federal action level — making an in-home read a standard household-level step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Corunna, IN