Chester, ID: 59 Violations - Home Safety Score unavailable
1 ZIP code · 1 water system · Updated
Data: EPA SDWIS
What You Should Know About Chester Water
- Your city's water systems recorded 59 violations since 2021.
- Average of reported 90th-percentile lead results: 0.002 mg/L.
- Homes built before 1986: 41% - older plumbing may contain lead solder.
- Health risk index (ZipCheckup composite of CDC data): 12.15.
Overview
We track home safety data for 1 ZIP code in Chester, Idaho (population ~346), covering 1 community water system serving approximately 3,606 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. The available record reports no health-based violations for this measured scope.
Water Sources
Chester water systems draw from: Groundwater.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0020 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 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 |
|---|---|---|---|
| Endrin | Organic | 4 | 1 |
| BHC-gamma (Lindane) | Organic | 4 | 1 |
| Methoxychlor | Organic | 4 | 1 |
| Toxaphene | Organic | 4 | 1 |
| Dalapon | Organic | 4 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 83421 | — | 59 | 0 | St Anthony |
All ZIP Codes in Chester
- 83421 - 59 violations recorded for mapped water systems
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 Chester
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
Top Contaminants in Chester Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Chester
With 41% 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 materials follow installation dates, not medians. Chester records a median build year of 1997, and a meaningful share of its homes date from before the 1986 federal lead restrictions.
Most homes in Chester were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Lead Exposure Risk for Children in Chester
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.
If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Chester, ID