Grassflat, PA: High Radon Risk — 40/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Federal monitoring data for Grassflat puts the city in PA's lower safety tier — exceedances show up in multiple utility districts, several systems have met thresholds requiring public notification under the Safe Drinking Water Act, and the compliance deficit has persisted across more than one consecutive reporting cycle, with no clear reversal visible in the most recent data available.
How Grassflat Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Grassflat Residents
- Homes built before 1986: 69% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
Grassflat's Water Providers
Grassflat, PA draws its residential water from 2 separate providers among the 2 federally tracked systems. Each operates independently, with its own infrastructure, rate structure, and compliance record.
Overview
We track water quality and home safety data for 1 ZIP code in Grassflat, Pennsylvania (population ~437), covering 2 community water systems serving approximately 24,484 people region-wide.
No EPA violations recorded across any ZIP codes in Grassflat — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Grassflat: D (40/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Grassflat water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Grassflat
- 0 ZIP codes 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.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 16839 | D | COOPER TWP MUNICIPAL AUTH | 3,700 |
All ZIP Codes in Grassflat
- 16839 [D]
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
Updated daily.
Grassflat Infrastructure Age
With 69% 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
Viewed through the lens of construction era, Grassflat is predominantly an older city — a median build year of 1968 puts most of the residential inventory in the range where pre-1986 plumbing materials were the standard.
Over half of homes in Grassflat 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.
How Remediation Costs Compare in Grassflat
Low proportionality — that's the Grassflat picture when remediation costs are placed against typical home equity.
Remediation costs in Grassflat are relatively low compared to home values. The $800–$1,500 estimated range is a small fraction of median property value. Home values are 31% below the Pennsylvania average.
Grassflat: Lead Risk & Vulnerable Populations
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.
If 69% of the Grassflat inventory comes from before the federal ban on lead-bearing solder — and if utility samples sit at or near 0.015 mg/L — the gap between citywide averages and one specific faucet becomes a practical concern rather than a theoretical one. That is why one-home reads exist as a separate measurement. A certified filter through retailer networks addresses confirmed exposure where it appears in a household.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Grassflat
- 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. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 69% of homes built before 1986, lead solder is a real possibility.
- 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 Grassflat, PA