Staff review private-well nitrate testing: a small share exceed EPA limit

Aug 26, 2026

Health staff presented four years of private-well nitrate data showing most tested wells under EPA limit (10 mg/L) but a small percentage exceed it; staff recommended education and point-of-use treatment where needed.

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Dubuque County public-health staff presented four years of private-well nitrate testing data on Aug. 26 and described how the department handles high results.

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