Q: My well was flooded. What should I do to make sure the water is safe for drinking?
A: We recommend you have your water tested for Coliform bacteria and E. coli.
Q: Does BFHD offer well water testing for flooded wells?
A: Yes. We provide free testing for Coliform bacteria and E. coli. Currently, we also offer free Nitrate testing through the Alternative Drinking Water Program.
Q: How can I get my well tested for free?
A: Please visit our Environmental Health (EH) front desk to enroll and pick up sample bottles.
Q: When should I test my well?
A: We recommend waiting until floodwater has fully receded and no additional flooding is expected before testing your well water. If you are concerned about your water quality in the meantime, use bottled water or boil your water before drinking.
Q: When can I submit my water samples?
A: Our Water Lab will accept flooded water samples from December 29 through December 31, 2025, and will resume receiving samples on January 5, 2026. We expect flooding to have fully receded at that time.
Please call us before sampling to confirm. Collect samples right before submission for accurate results.
Q: After submitting my water sample, how long will it take to know if my well is contaminated with Coliforms and/or E. coli?
A: Testing for Coliform bacteria and E. coli takes a minimum of 24 hours. We will contact you promptly if your sample tests are positive for either contaminant.
Q: My well was completely flooded, and I’m sure it’s contaminated. How can I disinfect it?
A: Provide your email address, and our staff will send you well disinfection instructions. After disinfection, you can enroll in free testing for Coliform, E. coli, and Nitrate to confirm your water is safe.
Q: If my well water test shows contamination with Coliform bacteria, what should I do?
A: We will send you well disinfection instructions. After completing disinfection, return for another round of free Coliform and E. coli testing.
Q: What should I do until I confirm my well water is clean?
A: Use alternative water sources (such as bottled water) for drinking and cooking. Boiling your well water can also help eliminate bacterial contaminants.
Q: What about our horses, cows and other animals? Can they still drink well water if it is contaminated with Coliforms/ E.coli?
A: The same advice for wells impacted for floods goes for animals too. Use alternative water sources while testing and treating the water as needed. For more information, read this article from the Washington State Department of Agriculture.