We administer federal and state funds for grants and low-interest loans to improve the quality of Idaho’s water resources. Our drinking water grants and loans assist eligible public drinking water systems with facility planning projects to ensure safe and adequate drinking water supplies. Our wastewater grants and loans help entities build or repair existing wastewater treatment facilities to achieve and maintain compliance with state and federal standards or to provide direct water quality benefits.
Funding Opportunities
Fiscal Year (FY) 2028 Letters of Interest (LOIs) are now available.
A virtual training about Letters of Interest (LOI) updates will be held on November 9, 2026, from 10:00 a.m. – 12:00 p.m. (MT). Register here.
LOI Forms
- FY28 Drinking Water Planning Grant LOI Form
- FY28 Wastewater Planning Grant LOI Form
- FY28 Drinking Water State Revolving Fund LOI Form
- FY28 Clean Water State Revolving Fund LOI Form
- FY28 Drinking Water Emerging Contaminants LOI Form
- FY28 Sewer Overflow and Stormwater Planning Grant LOI Form
Questions regarding funding can be sent to grants.loans@deq.idaho.gov.
Funding Assistance at a Glance
Learn about the FY2023 American Rescue Plan Act and FY2024 Leading Idaho priority lists. Updated October 22, 2026.
