Rio Arriba County Water Quality

Rio Arriba County, New Mexico has a water quality grade of F with a score of 4.4/100, based on EPA Safe Drinking Water Information System data. The county has 246 health-based drinking water violations on record.

Rio Arriba County has 246 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.

Rio Arriba County's water quality score of 4.4/100 is lower 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, Rio Arriba County has a water quality grade of F (4.4/100). 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).

Rio Arriba County has 246 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.

Rio Arriba County ranks #26 out of 32 counties in New Mexico by water quality score (1 = best). With a score of 4.4/100, it falls in the bottom third of counties statewide. Rankings are based on EPA Safe Drinking Water Information System (SDWIS) data including health-based violations and compliance records.