Johnston City, IL - Home Safety Score unavailable
1 ZIP code · 5 water systems · Updated
Data: EPA SDWIS
Key Facts for Johnston City Residents
- Your city's water systems recorded 22 violations since 2021.
- Average of reported 90th-percentile lead results: 0.01 mg/L.
- Homes built before 1986: 74% - older plumbing may contain lead solder.
- Estimated remediation: $800 per household.
- Health risk index (ZipCheckup composite of CDC data): 14.02.
Johnston City's Water Providers
3 systems shown for Johnston City, IL, from 5 on the federal list.
Overview
We track home safety data for 1 ZIP code in Johnston City, Illinois (population ~5,381), covering 5 community water systems serving approximately 37,124 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. 2 health-based violations appear in the available health breakdown.
Water Sources
Johnston City water systems draw from: Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0100 mg/L (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
1 of 1 ZIP records with known zones is in EPA Radon Zone 2.
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 |
|---|---|---|---|
| Lead and Copper Rule Revisions | Treatment Technique | 10 | 1 |
| Consumer Confidence Rule | Reporting | 10 | 1 |
| Lead and Copper Rule | Treatment Technique | 8 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 6 | 1 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 4 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 62951 | — | 22 | 2 | Johnston City |
All ZIP Codes in Johnston City
- 62951 - 22 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.
Johnston City 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 Johnston City's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Johnston City Infrastructure Age
With 74% 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
Plumbing risk in older housing is tied to the period before 1986, when lead pipes and lead solder were still permitted in new plumbing. Johnston City's median build year is 1964, and properties from before that year might still contain lead-bearing joints or pipes. Much of that risk sits inside individual properties, which city-level water quality averages don't capture.
Over half of homes in Johnston City 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.
How Remediation Costs Compare in Johnston City
Measured against the median home value, the estimated cost of fixing the issues flagged for Johnston City lands in the lowest of the three tiers this page uses.
Estimated remediation costs in Johnston City can be compared with local home values. The $450–$1,400 estimated range can be set against the median property value; actual costs vary by home. Home values are 51% below the Illinois average.
Johnston City: 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.
Two pieces of area data frame lead for Johnston City families. First, the average of ZIP-level 90th-percentile lead results is 0.010 mg/L or higher. Second, census figures put homes built before 1986, which are more likely to contain lead pipes, fixtures or solder, at about 74% of the housing stock. Neither figure measures a particular home, so a certified lab test of the tap water is the step that shows the lead level there.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Johnston City: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Johnston City contains 10 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $16,860. 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 $800 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 Johnston City, IL