Free water testing is made eligible to all Johnson County households with a private well on their property. The program is available through the Grants-to-Counties (GTC) program. The GTC program was established in 1987 when legislature passed the Iowa Groundwater Protection Act to help prevent further contamination of one of Iowa’s most precious resources; our groundwater.

Water Well Sampling

All well water should be periodically sampled. How often you test your well water varies by the age of the well, and whether you experience water discoloration, unusual smells, and/or suspect contamination. You may contact Johnson County Public Health or the University of Iowa Hygienic Laboratory to purchase sample bottles.

If you have any questions or concerns about your well please contact an Environmental Health Specialist at Johnson County Public Health at 319-356-6040.

Water Treatment

Well Disinfection Instructions
Contamination & Treatment Options
Iowa Regulations for Residential Water Treatment