Water is our most valuable shared resource and together we can keep it
that way for generations to come.
Why does my water smell like rotten eggs?

A rotten-egg odor can come from a harmless chemical, hydrogen sulfide, dissolved in water. Usually this comes from groundwater (well water) with sulfur compounds.

Many of the substances that cause bad taste or odor in drinking water will not make you sick. However, if you detect an unusual odor or taste, contact us at (406) 721-5570.

back to common questions

More information can be found at the Environmental Protection Agency’s website at http://www.epa.gov/safewater/faq/faq.html


- The Missoula Aquifer
- Watershed
- Rattlesnake Lakes
- Backflow/Cross-Connection
- The Water Quality Report
- Water Quality Questions
- Bottled Water vs. Tap Water
- The Milltown Dam
- Private Wells vs. Regulated Water