Irrigated Lands Regulatory Program (ILRP)
The ILRP was initiated to prevent agricultural runoff from impairing surface waters, and later included the addition of groundwater regulations. Runoff from irrigated lands can contain pollutants, such as pesticides, fertilizers, salts, and sediment, which can harm aquatic life or make water unusable for drinking water or agricultural uses. Waste discharge requirements (WDRs) address irrigated agricultural discharges to protect water quality.
News & Notices
The Central Valley Water Board is inviting the public and other stakeholders to submit written comments on the following Surface Water Quality Management Plans:
| Waterbody | Constituent | Coalition Area | Contact | Comments Due |
|---|---|---|---|---|
| Newman Wasteway | Ammonia as N | Westside San Joaquin River Watershed Coalition | Petra Lee | 7 August 2026 |
| Del Puerto Creek | Aquatic toxicity to Ceriodaphnia dubia | Westside San Joaquin River Watershed Coalition | Petra Lee | 7 August 2026 |
The Irrigated Lands Regulatory Program (ILRP) implements surface water monitoring requirements to protect beneficial uses and ensure irrigated agricultural operations comply with water quality objectives outlined in applicable Basin Plans. Under ILRP General Orders, a Surface Water Quality Management Plan must be developed and implemented when a water quality objective is exceeded more than once within a three-year period at a specific monitoring site.
Table of Contents
Email Subscription List
Subscribe to the Irrigated Lands Regulatory Program email list to received notifications and updates.
Contact Us
- Program Contacts
- Web page problems: Webmaster5@waterboards.ca.gov
Facts & Information
- Does my property need coverage under the ILRP?
- Outreach Brochures
- ILRP Frequently Asked Questions (FAQ)
- ILRP Success Stories
- Program Videos (Videos open in YouTube)
- Expert Review of ESJ Surface Water Monitoring (opens SCCWRP website)
- State Water Board's ILRP (opens SWRCB website)
