How-to · 6 min
Sulphur water treatment: clearing rotten-egg wells
Hydrogen sulphide needs oxidation, aeration or specialised media — not perfume and not a softener alone.
- Author
- WaterFilterHelp Editorial Team
- Canadian home-water research and consumer education
- Reviewed by
- WaterFilterHelp Standards Review
- Fact-checked against official Canadian guidance and certification sources
- Last reviewed
- 2026-08-23
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Confirm the source
Smell at all cold taps points to the well. Hot-only smell may be the water heater anode. A pro can isolate the culprit quickly.
Treatment options
Aeration, oxidizing filters and catalytic carbon variants are common. Choice depends on sulphur level, iron, pH and flow rate.
Pair with the rest of the train
Sulphur systems often sit with sediment pretreatment, softener and UV when bacteria is also a risk.
Get a local design
Use the wizard (select rotten-egg smell) and request a well-treatment quote.