Oregon Health Authority (OHA) has released its final report on the health risks linked to drinking water from domestic wells north of Prineville. This report was created by OHA’s Environmental Health Assessment Program after a two‑month public comment period.

Close to 60 wells were tested in the area. Results show that many have contaminants that may pose health risks like arsenic, nitrates, and some coliform bacteria. The report also found lead and manganese in about half of the wells. Seven wells had water with manganese levels high enough to be a potential health risk for infants under one year old if they drank it.

The report outlines several steps people can take to reduce risks, including blood lead testing (especially for children), water treatment options, and follow‑up testing to check if treatment is working.

OHA has already shared results and health information directly with affected residents and offered one‑on‑one time with an OHA toxicologist to help families understand their options.

The final report is the same as the draft released in June 2026, with the addition of public comments and OHA’s responses included in the appendix.

This work is an important step in supporting the health and safety of families who rely on private wells. OHA remains committed to working alongside residents and providing information and support to help keep their drinking water safe.

You can find the full health consultation and supporting materials on the OHA Crook County Domestic Wells web page.