Various types of permits are issued by the federal, state, and local governments to protect the quality of Idaho’s surface water and groundwater. DEQ issues Idaho Pollutant Discharge Elimination System (IPDES) permits, reuse permits, and 401 water quality certifications.
- IPDES permits are written to comply with state water quality standards and limit the amount of pollution that permitted facilities may discharge into surface waters.
- Reuse permits must be obtained to construct, modify, or operate a recycled water reuse facility in Idaho.
- 401 water quality certifications are required for any permit or license issued by a federal agency for an activity that may result in a discharge into the waters of the United States (WOTUS).
Learn more about IPDES permits, reuse permits, and 401 water quality certifications using the links below.