Private well owners urged to have their water testedProperly maintaining wells that tap into groundwater is critical for protecting personal health and the health of the resource.
More than one million people residing in more than 400,000 households in Minnesota rely on private wells as their source of drinking water. While wells can provide high quality drinking water, state health officials observe that most wells are rarely tested on a regular basis for things that can make consumers of the well water sick, such as bacteria, arsenic, or nitrate.
The Minnesota Department of Health (MDH) estimates that at any given time, as many as 25 percent of private wells in Minnesota have detectable levels of total coliform bacteria, an indication that surface contamination has entered the well or water system.
Properly maintaining wells that tap into groundwater is critical for protecting personal health and the health of the resource. MDH recommends that private wells be tested once a year for total coliform bacteria, an indicator of bacterial contamination. Testing for nitrate is recommended every two to three years – more often if nitrate has been detected previously in the well or if an infant under the age of six months will be consuming the water. In addition, MDH recommends that every well be tested for arsenic at least once.
Testing your well is up to you. Getting your well tested is a relatively simple process. Your local county health department may provide or arrange for testing services. Commercial (or private) laboratories providing water testing services are usually listed in the Yellow Pages under “Laboratories – Testing.” You should check to make sure the laboratory is certified to perform tests that you want. The laboratory will provide directions for collecting and submitting water samples for testing. The costs for analysis are usually in the range of $20 to $40 per test, depending on what is tested. More information on well testing can be found at: http://www.health.state.mn.us/divs/eh/wells/waterquality/test.html.
People with questions about well water contaminants – or other well related issues – can obtain advice from MDH, their local health department, or local MDH-licensed well contractors. Well specialists are available to answer questions at the MDH district office in Duluth at 218-723-4642.
In Carlton County, the Planning and Zoning office can test for both coliform bacteria and nitrates. The information can be found on the county website at www.co.carlton.mn.us under the Planning and Zoning page, found by clicking the drop-down menu on the left of the page. You can find the fee schedule and instructions under the link for Well Water Analysis at the bottom of the page. Residents can also call the office with questions at 218-384-9176 or 1-800-862-3760 ext. 176.