Bryn Mawr, PA: 1 Health Violation — 59/100 (2026)
1 ZIP code · 5 water systems · Updated 2026-06-03
Bryn Mawr, PA: mid-range safety grade, uneven compliance across service areas.
How Bryn Mawr Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Bryn Mawr Water
- Your city's water systems recorded 9 violations in the past 5 years.
- Average lead level: 0.0034 mg/L.
- Homes built before 1986: 84% — older plumbing may contain lead solder.
- Estimated remediation: $2,700 per household.
Who Supplies Your Water in Bryn Mawr
Throughout Bryn Mawr, PA, water comes from one of 3 primary utilities out of 5 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 Bryn Mawr, Pennsylvania (population ~22,004), covering 5 community water systems serving approximately 994,446 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 1 health-based violation documented.
Home Safety Score
Average Home Safety Score for Bryn Mawr: 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
Bryn Mawr water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0034 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 1085 | Other | 2 | 1 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | 1 |
| Contaminant 2959 | Other | 2 | 1 |
| Gross Alpha | Radionuclides | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 19010 | C | 9 | 1 | Aqua Pa Main System |
All ZIP Codes in Bryn Mawr
- 19010 [C] — 9 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.
Top Contaminants in Bryn Mawr Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Bryn Mawr
With 84% 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
Housing age is one of the most reliable proxies for plumbing-era lead risk, because two federal milestones — the widespread use of lead pipes before 1970 and the continued use of lead solder until 1986 — define the highest-risk tiers of the residential housing stock. With a median build year of 1969, Bryn Mawr falls squarely within the older range — meaning a large fraction of the housing was built under the plumbing standards of those earlier eras. The distribution above captures where that risk concentrates, and why older neighborhoods warrant particular attention from residents concerned about tap water quality.
Over half of homes in Bryn Mawr 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.
Cost Context: What Remediation Means for Bryn Mawr Homeowners
Equity impact data for Bryn Mawr lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Bryn Mawr are relatively low compared to home values. The $1,750–$3,900 estimated range is a small fraction of median property value. Home values are 270% above the Pennsylvania average.
Lead Exposure Risk for Children in Bryn Mawr
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.
Despite citywide averages serving as the standard public reference point, those aggregates cannot resolve what is happening at one specific faucet — and where 84% of Bryn Mawr homes come from before the solder rule or where utility samples sit at or above the action mark, the gap between system data and faucet reality matters more than it does in lower-exposure communities. An in-home draw closes that gap, with certified filtration through retailer networks available where confirmed faucet results warrant additional measures.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Bryn Mawr
74 FEMA flood insurance claims are on file for Bryn Mawr, and 100% of local ZIP codes fall within federally designated flood zones — enough to put flood exposure on the planning radar, though short of the concentrated-risk threshold where treatment-system vulnerability becomes a primary consideration.
Bryn Mawr has a moderate flood history with 74 FEMA claims averaging $5,973 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>$2,700</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 Bryn Mawr
- 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 Bryn Mawr's water.
- Check your home's plumbing. With 84% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Bryn Mawr, PA