Horsham, PA: 5 Violations — 58/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Compared to top-scoring cities in PA, Horsham lands in the middle tier — some water systems meet standards cleanly, others carry documented violations, and performance can vary significantly across service areas.
How Horsham Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Horsham Residents
- Your city's water systems recorded 5 violations in the past 5 years.
- Average lead level: 0.0033 mg/L.
- Homes built before 1986: 73% — older plumbing may contain lead solder.
- Estimated remediation: $3,600 per household.
Horsham's Water Providers
Throughout Horsham, PA, water comes from one of 2 primary utilities out of 2 total systems — independent providers with different rate structures, infrastructure, and compliance records that vary across the service territory.
Overview
We track water quality and home safety data for 1 ZIP code in Horsham, Pennsylvania (population ~17,134), covering 2 community water systems serving approximately 848,600 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 Horsham: C (58/100)
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
Horsham water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0033 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 0700 | Other | 4 | 1 |
| Total Organic Carbon | Disinfection Byproducts | 2 | 1 |
| Radium-228 | Radionuclides | 2 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 19044 | C | 5 | 0 | Horsham Water&sewer Authority |
All ZIP Codes in Horsham
- 19044 [C] — 5 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.
What's in Horsham's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Horsham Infrastructure Age
With 73% 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
The median home in Horsham was built in 1970 — a figure that places most of the city's residential stock in the era when lead solder was still standard in copper plumbing. Homes built before 1986 may have lead-soldered joints; those built before 1970 face the additional possibility of lead pipes in the service line itself.
Over half of homes in Horsham 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 Horsham
In Horsham, the equity impact of remediation is proportionally small — not the kind of financial commitment that rises to the level of a genuine planning constraint, but a minor share of what most properties here are worth.
Remediation costs in Horsham are relatively low compared to home values. The $2,400–$4,800 estimated range is a small fraction of median property value. Home values are 75% above the Pennsylvania average.
Horsham: 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.
Confirming what arrives at a specific faucet is something utility-side averages cannot do. With 73% of Horsham stock built before the lead-solder ban and citywide monitoring at or beyond the regulatory mark, a tap-level kit fits the standard diligence picture.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Horsham: Flood History & Water Damage Risk
How does Horsham's flood record connect to local water quality? The NFIP documents 72 claims — enough to signal recurring events — and 100% of ZIP codes carry FEMA flood zone status. That combination places flooding in the category of factors that can periodically affect water infrastructure, even if the area isn't among the highest-exposure communities in the NFIP dataset.
Horsham has a moderate flood history with 72 FEMA claims averaging $20,405 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>$3,600</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 Horsham
- 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 0700 can reduce the most common contaminant found in Horsham's water.
- Check your home's plumbing. With 73% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Horsham, PA