Frequently Asked Questions
Is this test the same as a public health or professional bacteria test?
No. In-home screening kits for total coliforms will not be as accurate as laboratory testing.
What’s the difference between total coliforms, fecal coliforms, and E. coli?
My water sample was coliform positive. Can I just “shock” my well with bleach?
There are many reasons coliform bacteria could be in your sample. If, for example, surface water is getting into your well or the aquifer (source of water for your well) is itself contaminated, shocking alone will not be an effective solution.
How does surface water get into a well?
Surface water intrusion can happen in a number of ways. For instance, surface water can get into your well if the well cap is missing or damaged. Or, seepage may occur through cracks or holes in the well casing or along the outside of the well casing for wells constructed at a time when sealing with grout was not required. Another frequent cause is well flooding from heavy rainfall, hurricanes, or significant snowmelt.