Water testing
Well water smells like rotten eggs: what to document
Common context to document when private well water smells like sulfur or rotten eggs.
Short answer
A rotten-egg smell in well water can have several causes and should be evaluated with testing and qualified local guidance. Homeowners should note where, when, and under which conditions the smell appears.
Checklist
- Check hot water vs cold water separately.
- Note whether the smell appears at every fixture.
- Record treatment equipment and maintenance history.
- Ask local professionals what testing is appropriate.
Buying a Home With Well & Septic Checklist
Use the odor symptom worksheet.
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Administrative and educational resource only. This guide is not inspection, engineering, legal, medical, or water-safety advice. Confirm local requirements and property-specific decisions with qualified professionals and official local agencies.