There are 28 member units of the Kings River Water Association. Thirteen are public agencies and 15 are mutual water companies.
KRWA members units include:
- Alta Irrigation District
- Burrel Ditch Company
- Clark's Fork Reclamation District
- Consolidated Irrigation District
- Corcoran Irrigation District
- Crescent Canal Company
- Empire West Side Irrigation District
- Fresno Irrigation District
- John Heinlen Mutual Water Company
- James Irrigation District
- Kings River Water District
- Laguna Irrigation District
- Last Chance Water Ditch Company
- Lemoore Canal and Irrigation Company
- Liberty Canal Company
- Liberty Mill Race Company
- Lovelace Water Corporation
- People's Ditch Company
- Reed Ditch Company
- Riverdale Irrigation District
- Southeast Lake Water Company
- Stinson Canal and Irrigation Company
- Stratford Irrigation District
- Tranquillity Irrigation District
- Tulare Lake Basin Water Storage District
- Tulare Lake Canal Company
- Tulare Lake Reclamation District No. 761
- Upper San Jose Water Company