Iowa Geological Survey offering free groundwater chemistry tests for private wells near Cedar River, county staff say

County staff told the Muscatine County Board of Supervisors on Jan. 2, 2025, that the Iowa Geological Survey is providing free groundwater chemistry tests for private wells located within a few miles of the Cedar River flood plain. The project aims to map connectivity and distribution of shallow sand aquifers in the river valley, county staff said.

Staff emphasized the Iowa Geological Survey’s work is a scientific mapping effort rather than a regulatory water-quality program; they said results will not be used to enforce actions. Staff also indicated the testing may focus on mineral and chemistry markers used to match aquifers rather than routine contaminant screening for bacteria or nitrates, and said it was unclear whether participants would receive individualized contaminant reports. Staff noted the county has grant funds available for private well testing for contaminants of concern and encouraged residents with immediate water-quality concerns to contact the county office.

The announcement was given as an informational item during the administrative report portion of the agenda; staff provided a contact pathway for residents interested in participating.