Lansdale, PA: 10 Violations — 59/100 (2026)
1 ZIP code · 6 water systems · Updated 2026-06-03
While Lansdale avoids PA's lowest safety tiers, a portion of its water systems have logged documented violations.
How Lansdale Compares
Data: EPA SDWIS Last verified: 2026-06-03
Lansdale Water: The Quick Version
- Your city's water systems recorded 10 violations in the past 5 years.
- Average lead level: 0.002 mg/L.
- Homes built before 1986: 65% — older plumbing may contain lead solder.
- Estimated remediation: $3,000 per household.
Water Systems Serving Lansdale
Lansdale, PA is covered by 3 major water utilities out of 6 federally tracked systems, each managing its own pipes, treatment processes, and EPA filings. What a household gets from the tap depends on which provider's system serves that address.
Overview
We track water quality and home safety data for 1 ZIP code in Lansdale, Pennsylvania (population ~61,608), covering 6 community water systems serving approximately 253,543 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Lansdale: C (59/100)
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
Lansdale water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0020 mg/L (EPA action level: 0.015 mg/L)
- 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.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Contaminant 1009 | Other | 4 | 1 |
| Contaminant 0700 | Other | 4 | 1 |
| Revised Total Coliform Rule | Microbiological | 4 | 1 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | 1 |
| Radium-228 | Radionuclides | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 19446 | C | 10 | 0 | North Penn Water Authority |
All ZIP Codes in Lansdale
- 19446 [C] — 10 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
Updated daily.
Key Contaminants Detected in Lansdale
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Lansdale's Housing Stock?
With 65% 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
When more than half a city's housing predates the 1986 federal ban on lead solder, plumbing-era lead risk becomes a citywide concern rather than an exception. Lansdale's median build year of 1973 places it squarely in that category.
Over half of homes in Lansdale 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.
Lansdale: Remediation Cost in Perspective
Equity impact data for Lansdale lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Lansdale are relatively low compared to home values. The $2,000–$4,100 estimated range is a small fraction of median property value. Home values are 95% above the Pennsylvania average.
Protecting Children from Lead in Lansdale
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.
Older stock in Lansdale represents 65% of the inventory, and citywide monitoring runs at or above the federal action level — making an in-home read a standard household-level step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Lansdale
Within the NFIP's national dataset, Lansdale falls in moderate-exposure territory — 41 documented incidents spanning multiple decades, with 100% of local ZIP codes sitting inside FEMA flood boundaries. That combination warrants inclusion in any thorough local water quality review.
Lansdale has a moderate flood history with 41 FEMA claims averaging $19,226 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$3,000</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Lansdale
- 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 Contaminant 1009 can reduce the most common contaminant found in Lansdale's water.
- Check your home's plumbing. With 65% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Lansdale, PA