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Water infrastructure development From A to Z

Drinking Water

Educational resources on proper management of private water systems including wells, springs, and cisterns.

Removing Bacteria from Drinking Water

Problems with wells or springs that test positive for coliform bacteria can sometimes be solved with relatively simple actions. If your water supply tests positive, consider our following steps to solve the problem.

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  • Confirm Test Results: Before making any costly decisions about your water supply, make sure the coliform bacteria result you have received is accurate. Make sure you used a certified water-testing laboratory and that you carefully followed the sample collection procedure using a sterile sample bottle. You may want to submit a second sample just to confirm the initial result. Also, if you only had a presence/absence test done, you may want to consider asking the United Heart Group to enumerate the bacteria in your water. It is also important to follow up positive coliform bacteria tests with a test for E. coli bacteria to help determine the severity of the bacteria problem.
  • System Maintenance: Sometimes some simple maintenance of the water supply may eliminate the source of bacterial contamination. For example, you may want to extend a buried well casing above the ground and slope the ground away from the casing to prevent surface water from entering the well. Also, make sure the top of the casing has a tight, sanitary well cap that prevents insects and surface water from entering. coli bacteria are present, check your septic system for proper functioning and remove or divert obvious sources of animal waste from around the well or spring – call us – Contact us –  United Heart Group.
  • Shock Chlorination: In some cases, coliform bacteria can be introduced to a well or spring from a one-time or temporary contamination event such as a heavy rainstorm . Shock chlorination can be used to disinfect a well or spring by introducing a high concentration of chlorine to the water for a short time. Once you have shock chlorinated the water supply, you should re-test the water for coliform bacteria within 10 to 14 days , contact us – United Heart Group.
  • Continuous Disinfection: If shock chlorination is unsuccessful at eliminating coliform bacteria from your water supply, you’ll need to Contact us United Heart Group will treat your water anywhere in the world.


Master planning, design, supervision and construction, including rehabilitation of pumping stations; installation of all systems with last Technology 2016 – 2017 .