The Fond du Lac County Health Department is encouraging residents to get their well water tested. During the month of September, the Health Department is offering bacteria and nitrate testing for $25. Public Health Officer Kim Mueller says water is used for cooking, bathing, drinking, laundry, and other household activities and if your water is contaminated, you could become ill. Mueller says wells can become contaminated at any time and routine testing can help identify any problems with a well. Mueller says residents should have their wells tested at least annually for bacteria and nitrates, after heavy storms, flooding, heavy snowmelt in the spring, or in the hot stagnant periods in late summer and early fall. A well should also be tested any time you notice a change in the taste, odor, or color of the water. Test kits are sold at the Fond du Lac County Health Department, located on the 3rd floor of the city/county building in Fond du Lac.