San Juan County Water Quality

San Juan County, New Mexico has a water quality grade of F with a score of 24.3/100, based on EPA Safe Drinking Water Information System data. The county has 96 health-based drinking water violations on record.

San Juan County has 96 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.

San Juan County's water quality score of 24.3/100 is higher than the New Mexico state average of 21.7. The average water quality grade across New Mexico is F, based on data from 32 counties with available water quality data.

Based on EPA data, San Juan County has a water quality grade of F (24.3/100). This indicates below-average water quality with significant compliance issues. Residents may want to consider home water filtration. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).

San Juan County has 96 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.

San Juan County ranks #9 out of 32 counties in New Mexico by water quality score (1 = best). With a score of 24.3/100, 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.