Greeley County Water Quality

Greeley County, Nebraska has a drinking-water quality grade of F with a score of 6.8/100, based on EPA SDWIS compliance data. The county has 8 health-based drinking water violations over the past 5 years. Watershed health, monitoring records, and live streamflow are reported separately on this page.

Greeley County has 8 health-based drinking water violations recorded by the EPA over the past 5 years. 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.

EPA ATTAINS assessments under Clean Water Act §303(d) indicate 66.7% of Greeley County's 6 assessed water bodies are classified as impaired (4 impaired). The top reported causes are ESCHERICHIA COLI (E. COLI), CAUSE UNKNOWN. Impairment means the water body fails to meet state quality standards for at least one designated use — drinking water source, recreation, aquatic life, or fish consumption. Note: watershed impairment doesn't always translate to tap-water issues; treatment plants can remove most regulated contaminants.

Greeley County's SDWIS water quality score of 6.8/100 is lower than the Nebraska state average of 58.1. The average water quality grade across Nebraska is D, based on data from 90 counties with available SDWIS data.

Based on EPA SDWIS data, Greeley County has a water quality grade of F (6.8/100). This indicates below-average compliance with significant violations. Residents may want to consider home water filtration or independent testing. The grade speaks to the public water system, not the watershed — for watershed-level concerns, see the Watershed Health zone. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).

Greeley County has 8 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.

Greeley County ranks #84 out of 90 counties in Nebraska by SDWIS water quality score (1 = best). With a score of 6.8/100, it falls in the bottom third of counties statewide. The ranking reflects EPA SDWIS compliance only — not watershed impairment, monitoring density, or streamflow, which are tracked separately on this page.