Private Well Testing Day

About the Program

Every year, Calumet County hosts a private well testing day with the support of local towns and villages.  A private well should be sampled annually for bacteria at a minimum. This event provides the annual opportunity (and reminder) to "check-up" on your home's drinking water supply. Benefits of participating include bottle pick up & drop off convenience, reduced pricing for group testing participants, and an education night held about five weeks after the event. The education night is an opportunity to learn how to read your results, as well as how to resolve any problems with your water, including plumbing, proper well maintenance, and at home-practices to improve your drinking water. 

The 2022 program occurred in May.  Below is a summary of those results as well as a link to the annual groundwater report.  Details for the 2023 program will be available in February.  Please check back, or sign up for our mailing list to receive notifications and details of future programs. 

Groundwater Program Mailing List


2022 Group Testing Results

227 wells were sampled on May 9, 2021 and analyzed for coliform bacteria and nitrates. The results of the sampling event are found in the table below.  More details are provided in the 2022 Groundwater Report.


2021 Group Testing Results

A recorded presentation from the 2021 Education program was recorded and provided details on overall results from the September sampling event along with how to interpret individual results.  Meeting Recording

EventTable2021


2020 Group Testing Results

2020 Groundwater Report.

Table of Private Well Test Results from 2020


2019 Group Testing Results

Calumet County Groundwater Report June 2019 (PDF)

Results by Town


2018 Group Testing Results - May 7

2018 Group Testing Table.PNG

Other Parameters Tested: Calcium, Copper, Iron, Potassium, Magnesium, Manganese, Sodium, Lead, Sulfate, Zinc, pH, Conductivity, Alkalinity, Total Hardness, Chloride, Diaminochlorotriazine (DACT