Delaware County Water Quality

Delaware County, Pennsylvania has a water quality grade of C with a score of 53.3/100, based on EPA Safe Drinking Water Information System data. The county has 18 health-based drinking water violations on record.

Delaware County has 18 health-based drinking water violations recorded by the EPA. Health-based violations indicate instances where contaminant levels exceeded EPA Maximum Contaminant Levels (MCLs). Violations may have been resolved — check with your local water utility for current status.

Delaware County's water quality score of 53.3/100 is higher than the Pennsylvania state average of 38.9. The average water quality grade across Pennsylvania is F, based on data from 67 counties with available water quality data.

Based on EPA data, Delaware County has a water quality grade of C (53.3/100). This indicates moderate water quality. Some violations have been recorded but overall compliance is maintained. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).

Delaware County has 18 health-based drinking water violations on record from the EPA SDWIS database. A higher violation count can result from aging infrastructure, underfunded water utilities, agricultural runoff contamination, or industrial pollution. Counties with more water systems may also see more violations simply due to scale. Residents concerned about water quality should consider independent water testing and home filtration systems.

Delaware County ranks #13 out of 67 counties in Pennsylvania by water quality score (1 = best). With a score of 53.3/100, it falls in the top third of counties statewide. Rankings are based on EPA Safe Drinking Water Information System (SDWIS) data including health-based violations and compliance records.