Irrigated Lands Regulatory Program

The Central Valley Water Board has allowed growers to combine resources by forming water quality coalitions (also referred to as a third-party). The coalition groups work directly with their member growers to assist in complying with Central Valley Water Board requirements by conducting surface water monitoring and preparing regional plans to address water quality problems.  Under the waste discharge requirements (current program), which protect both surface water and groundwater, growers can join a Coalition group.

To join a Coalition group, growers must follow instructions depending on the location of parcels that are required to have regulatory coverage. Please see information on how to apply to join a Coalition.

• Coalition Contact Information
  • Sacramento & San Joaquin Coalition Groups
  • Tulare Lake Basin Coalition Groups
• Shape Files
  • Coalition Group shapefiles, ZIP (Archive File)

Apply to join a coalition group by contacting or visiting the appropriate coalition from the list below and submit a New Membership Application along with its associated fee. Coalitions are determined by the location of the parcels that are required to have regulatory coverage. The links below will direct you to the appropriate coalitions website.

Click map to open PDF

Sacramento & San Joaquin River Watershed Coalitions

For general Irrigated Lands Regulatory Program (ILRP) questions, please contact our Sacramento ILRP Office

1. California Rice Commission
2. Sacramento Valley Water Quality Coalition (broken into 13 subwatersheds due to its large size)
   • Subwatershed Information

3. San Joaquin County & Delta Water Quality Coalition
4. Westside San Joaquin River Watershed Coalition
5. East San Joaquin Water Quality Coalition
6. Grassland Drainage Area

Tulare Lake Basin Area Coalitions

For general Irrigated Lands Regulatory Program (ILRP) questions, please contact our Fresno ILRP Office

7. Kings River Watershed Coalition Authority
8. Westlands Water Quality Coalition
9. Kaweah Basin Water Quality Coalition
10. Tule Basin Water Quality Coalition
11. Cawelo Water District Coalition
12. Westside Water Quality Coalition
13. Kern River Watershed Coalition Authority
14. Buena Vista Coalition