SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/fish-well-water-no-chlorine

Your home uses a private well. Does its water usually contain chlorine or chloramine?

Usually not, but some well water needs aerating first.

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  1. Usually not, but it may need aeration ✔
  2. Yes, all well water has chloramine
  3. Yes, well water is always salty

Why: Florida Sea Grant says rural well water likely has no chlorine or chloramines. But some deep wells are low in oxygen or carry gases like hydrogen sulfide, so the water should be aerated and prepared before use.

Huh, didn't know that: Purdue's 4-H guide says well water needs no dechlorinating unless your well system adds chlorine.

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What do you call a shy shellfish? Shellfish.
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References

Answer: Usually not, but it may need aeration. Florida Sea Grant says rural well water likely has no chlorine or chloramines. But some deep wells are low in oxygen or carry gases like hydrogen sulfide, so the water should be aerated and prepared before use.

  1. Florida Sea Grant: Q&A, How to Keep Your Fish Tank Safe During a Power Outage www.flseagrant.org/qa-how-to-keep-your-fish-tank-safe-during-a-power-outage
    If they're in a rural area using well water, it likely won't contain chlorine or chloramines.
    Checked 2026-10-11.
  2. Purdue Extension 4-H 447-W: Aquatic Science helper's guide www.extension.purdue.edu/4-H/_docs/4-h-447-w.pdf
    No treatment is necessary for well water unless your well system adds chlorine.
    Checked 2026-10-11.

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