Lake County Water Quality

Lake County, Indiana has a water quality grade of B with a score of 68.4/100, based on EPA Safe Drinking Water Information System data. The county has 9 health-based drinking water violations on record.

Lake County has 9 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.

Lake County's water quality score of 68.4/100 is higher than the Indiana state average of 52.5. The average water quality grade across Indiana is D, based on data from 92 counties with available water quality data.

Based on EPA data, Lake County has a water quality grade of B (68.4/100). This indicates good to excellent water quality with strong compliance. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).

Lake County has 9 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.

Lake County ranks #20 out of 92 counties in Indiana by water quality score (1 = best). With a score of 68.4/100, 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.