Thornton, PA: 1 Health Violation - Home Safety 40/100
1 ZIP code · 2 water systems · Updated
ZipCheckup grade for Thornton: D.
Federal records show several conditions worth reviewing.
Your top priority: see the breakdown below and consider a certified water filter. NSF certified filters →
If you live in Thornton, PA, the lower-tier grade here is a signal to check the water system that serves your address and, if you have concerns, to test your own tap.
How Thornton Compares
Data: EPA SDWIS
Key Facts for Thornton Residents
- Your city's water systems recorded 30 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0048 mg/L.
- Homes built before 1986: 42% - older plumbing may contain lead solder.
- Estimated remediation: $800 per household.
Thornton's Water Providers
Among 2 systems linked to Thornton, PA, the 2 biggest by population served appear below.
- D
- D
Overview
We track home safety data for 1 ZIP code in Thornton, Pennsylvania (population ~2,288), covering 2 community water systems serving approximately 963,037 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 Thornton: D (40/100)
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
Thornton water systems draw from: Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0048 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 |
|---|---|---|---|
| Arsenic | Inorganic | 4 | 1 |
| Chlorite | Disinfection Byproducts | 4 | 1 |
| Barium | Inorganic | 4 | 1 |
| Cadmium | Inorganic | 4 | 1 |
| Chromium | Inorganic | 4 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 19373 | D | 30 | 1 | Chester Water Authority |
All ZIP Codes in Thornton
- 19373 [D] - 30 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.
What's in Thornton's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Thornton Infrastructure Age
With 42% 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
A citywide median of 1999 for construction says little about any single address in Thornton. Homes built before 1986, when federal amendments restricted the lead content allowed in new pipe, solder and flux, may contain plumbing materials with more lead, and later renovations may have replaced them. An inspection of the plumbing can identify the materials, and sending a tap water sample to an accredited laboratory measures lead.
Most homes in Thornton 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.
How Remediation Costs Compare in Thornton
Because the median home value in Thornton is large relative to the estimated cost of remediation, the ratio between them stays at or below 1%; that is a statement about two area-level numbers, not a quote for a particular house or a judgment about what an owner can pay.
Estimated remediation costs in Thornton 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 233% above the Pennsylvania average.
Thornton: 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.
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.
Thornton: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Thornton contains 9 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $3,999. 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 $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.
What You Can Do in Thornton
- Test your water at home. City-level data shows averages - your tap may differ. Check the certification, price and turnaround time of any water test kit or lab service.
- Install a certified water filter. For Arsenic, listed in the water-quality records for Thornton: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
- Check your home's plumbing. With 42% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. If you use a community water system, request its annual Consumer Confidence Report for system-level test results or find it online.
Deep Dive Reports
Detailed analysis for Thornton, PA