Decatur, IL: 9 Health Violations - Home Safety 64/100
6 ZIP codes · 6 water systems · Updated
ZipCheckup grade for Decatur: C.
A mixed picture - some signals here are worth your attention.
Your top priority: consider a certified water filter (9 health violations on record). NSF certified filters →
Decatur shows moderate tap water quality for IL - some areas carry documented EPA violations while others meet standards without issues.
How Decatur Compares
Data: EPA SDWIS
What You Should Know About Decatur Water
- Your city's water systems recorded 14 violations in the past 5 years.
- Average lead level: 0.0027 mg/L.
- Homes built before 1986: 85% - older plumbing may contain lead solder.
- Estimated remediation: $2,083 per household.
- CDC health risk index: 14.56 - above typical levels.
Who Supplies Your Water in Decatur
Structurally, Decatur, IL's water supply is divided. Federal data identifies 6 water systems in the area, with 3 providers serving the bulk of residential connections. These utilities operate independently, meaning rate-setting authority and EPA compliance accountability are distributed rather than centralized.
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Overview
We track home safety data for 6 ZIP codes in Decatur, Illinois, covering 6 community water systems serving approximately 79,432 people. The EPA snapshots used for this build directly map water systems to 4 of 6 ZIP codes.
4 of 4 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. 9 health-based violations appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Decatur: C (64/100)
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
Decatur water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0027 mg/L (EPA action level: 0.015 mg/L)
- 0 of 4 ZIP codes with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 6 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 16 | 1 |
| Contaminant 1009 | Other | 5 | 4 |
| Stage 1 DBP Rule | Treatment Technique | 5 | 2 |
| Surface Water Treatment Rule | Treatment Technique | 3 | 2 |
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 62521 | C | 12 | 8 | Decatur |
| 62526 | C | 3 | 1 | Decatur |
| 62522 | C | 2 | 0 | Decatur |
| 62523 | C | 1 | 0 | Decatur |
All ZIP Codes in Decatur
- 62521 [C] - 12 violations ⚠
- 62522 [C] - 2 violations
- 62523 [C] - 1 violation
- 62524
- 62525
- 62526 [C] - 3 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.
Health Outcomes in Decatur
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
Top Contaminants in Decatur Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Decatur
With 85% 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
When more than half a city's housing predates the 1986 federal ban on lead solder, plumbing-era lead risk becomes a citywide concern rather than an exception. Decatur's median build year of 1956 places it squarely in that category.
Over half of homes in Decatur 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.
Cost Context: What Remediation Means for Decatur Homeowners
Middle of the range - Decatur homeowners face a remediation share that calls for real financial attention without reaching crisis territory.
Remediation costs are moderate relative to home values in Decatur. The estimated $1,383–$2,833 range is manageable for most homeowners but still worth budgeting for. Home values are 41% below the Illinois average.
Lead Exposure Risk for Children in Decatur
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.
Even where utility-side monitoring meets Lead and Copper Rule requirements, the 85% pre-rule share in Decatur keeps interior-plumbing variation as a household-level question that aggregate data cannot resolve.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Decatur
Historical NFIP data for Decatur contains 181 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $8,781. Among ZIP codes with claim records, 75% 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 <strong>$2,083</strong> 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.
What You Can Do in Decatur
- Test your water at home. City-level data shows averages - your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. Filters rated for Haloacetic Acids (HAA5) can reduce the most common contaminant found in Decatur's water.
- Check your home's plumbing. With 85% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Decatur, IL