Johnstown, CO: 1 Health Violation - Home Safety 35/100
1 ZIP code · 5 water systems · Updated
ZipCheckup grade for Johnstown: F.
Federal data flags serious home-safety risks for this ZIP.
Your top priority: see the breakdown below and consider a certified water filter. NSF certified filters →
Drinking water quality in Johnstown has lagged behind CO benchmarks - documented violations keep the safety grade low.
How Johnstown Compares
Data: EPA SDWIS
What You Should Know About Johnstown Water
- Your city's water systems recorded 20 violations in the past 5 years.
- Average lead level: 0.0058 mg/L.
- Homes built before 1986: 16% - older plumbing may contain lead solder.
- Estimated remediation: $3,900 per household.
- CDC health risk index: 11.23.
Who Supplies Your Water in Johnstown
5 water systems are tracked federally in Johnstown, CO. The top 3 providers collectively serve most residential addresses, but because they operate independently, infrastructure maintenance standards and compliance histories differ from one service zone to another.
- F
- F
- F
Overview
We track home safety data for 1 ZIP code in Johnstown, Colorado (population ~19,696), covering 5 community water systems serving approximately 231,058 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.
Home Safety Score
Average Home Safety Score for Johnstown: F (35/100)
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
Johnstown water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0058 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
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 |
|---|---|---|---|
| E. coli | Microbiological | 8 | 1 |
| Contaminant 1009 | Other | 6 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 6 | 1 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 6 | 1 |
| Stage 1 DBP Rule | Treatment Technique | 4 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 80534 | F | 20 | 1 | Johnstown Town of |
All ZIP Codes in Johnstown
- 80534 [F] - 20 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 Johnstown
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 Johnstown Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Johnstown
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Johnstown's housing stock skews relatively recent, with a median build year of 2003. Homes constructed after 1986 avoid the lead-soldered copper joints that were standard before the federal ban - reducing aggregate risk from plumbing as a contamination pathway.
Most homes in Johnstown were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Johnstown Homeowners
In Johnstown, property values comfortably outpace what documented remediation typically costs - the equity share is proportionally low.
Remediation costs in Johnstown are relatively low compared to home values. The $2,550–$5,400 estimated range is a small fraction of median property value. Home values are 13% above the Colorado average.
Lead Exposure Risk for Children in Johnstown
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.
Once federal rules removed lead-bearing solder from new plumbing, building practice changed quickly. Johnstown now carries just 16% of older inventory from that earlier era. Citywide readings remain compliant, though no system-level number can replace a one-home draw.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Johnstown
Historical NFIP data for Johnstown contains 5 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $66,866. Among ZIP codes with claim records, 0% 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>$3,900</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 Johnstown
- 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 E. coli can reduce the most common contaminant found in Johnstown's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Johnstown, CO