Private wells provide water to 820,000 people in Connecticut, approximately 23% of the population’s water supply comes from private wells according to the Connecticut Department of Public Health. These wells are not regulated by the Environmental Protection Agency, although Local Health Departments do have the authority over the proper siting and construction of private wells. It is the responsibility of the well owners to test the quality of the water—it is recommended that you perform a Basic Indicators Test once a year. Additionally, if you notice a difference in taste, color, odor, or clarity contact your Local Health Department for assistance. Well water testing can be done for bacteriological elements, trace metals and minerals, pesticides and herbicides, and organic and inorganic chemicals. Click here to read about what elements you should test for and how frequently.

After your water is tested you should document the date of the test and the results. The EPA has established standards for maximum contaminant levels (MCLs) and the CT DPH has set action levels for certain contaminants. Should your results come back high you should retest the water to verify the results, stop drinking the water until the issue is resolved, and contact your Local Health Department for advice moving forward.

You can get your well water tested at state certified testing facilities. Procedures vary depending on the facility that is being used. Some facilities will send a technician to the location to take a sample and bring it back to the lab for testing. Other facilities allow for the homeowner to collect a sample. It is important to follow their instructions to ensure the proper collection practices and prevent contamination. Proper maintenance and operation of your well water system is important for protecting the water quality. Check out this best management practice checklist for private well owners.

Originally published by the Eastern Highlands Health District