Water Quality in Bryn Mawr, PA (18977)
EPA violation data for public water systems serving ZIP code 18977.
No Health-Based Violations
None of the 13 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are27 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 83% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
4,569
Population
13
Water Systems
27
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (13)
Phila Sub Water Co
Lower Bucks Co Joint Mun Auth
All resolvedKeystone Bottled Water Service
Washington Crossing Methodist
Keystone Bottled Water Company
Washington Crossing Inn
Colonial Farms Gourmet Market
All resolvedWashington Crossing Historic
All resolvedWash Crossing Co Op Nursery
Poco'S Restaurant
Franciscos On The River
All resolvedSoup To Nuts Catering
Cinco De Mayo
All resolvedContaminants Found
Missed testing deadlines — not a detection of bacteria.
Used to disinfect water — generally safe at regulated levels.
Similar to nitrate — harmful to infants at high levels.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jun 2025
How Does This Compare?
Bryn Mawr (18977) has more violations than 83% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 27, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.