Mixed Lettuce

Irrigated Lands Program (ILP)

The Central Coast Water Board regulates discharges from irrigated agricultural lands to protect surface water and groundwater using Order No. R3-2021-0040, General Waste Discharge Requirements for Discharges from Irrigated Lands (also known as the Agricultural Order), that applies to owners and operators of irrigated land used for commercial crop production. The Central Coast Water Board is focusing on priority water quality issues, such as pesticides and toxicity, nutrients, and sediments – especially nitrate impacts to drinking water sources. Staff is prioritizing efforts in the major agricultural areas of the region - the Salinas River, Santa Maria, and Pajaro River watersheds.

Agricultural Order Requirements

Links to Agricultural Order 4.0 (No. R3-2021-0040) documents, the Environmental Impact Report (EIR) Mitigation Monitoring and Reporting Program, the EIR Certification (Resolution No. R3-2021-0039), and the EIR Findings of Fact to Resolution No. R3-2021-0039)

Summary of Requirements: Compliance Calendar

Table of Agricultural Order requirements and due dates, organized by general requirements, groundwater protection requirements, surface water protection requirements, and including both individual and third-party program options. 


Need information about enrollment? Need to enroll? Already enrolled? Need to authorize access to your account? Need to terminate a ranch or operation? Go here for links to the electronic Notice of Intent (eNOI), GeoTracker, and useful information.

Third-Party Programs

Information about approved third-party program administrators that can assist growers in compliance with portions of the Agricultural Order.

Farm Water Quality Control Plan

Information about the requirement for growers to maintain a Farm Plan for each ranch.

Total Nitrogen Applied Report / Irrigation and Nutrient Management Summary Report

Information about the requirement for growers to submit a TNA Report or an INMP Summary Report and directions for each of these.

Groundwater Quality Monitoring and Reporting

Information about groundwater quality monitoring and reporting requirements and third-party program assistance.

Surface Water Quality Monitoring and Reporting

Information about surface water quality monitoring and reporting requirements and third-party program assistance.

Annual Compliance Form

Information about the requirement for growers to submit an ACF for each ranch.

Technical Assistance Providers and Consultants

Contact information for technical assistance providers and consultants available to help growers throughout the central coast region.

Items for Discretionary Review

Information for submitting a request for discretionary review and a list of items open for discretionary review under Ag Order 4.0.

Funding Opportunities

Grants available to growers, third-party programs, and others for agricultural activities related to water quality improvement efforts.

Enforcement Actions

Record of enforcement actions taken by the Water Board to protection water quality in the central coast region.

Litigation / Petitions

Information about the Ag Order 4.0 litigation and petition process and items being reviewed by the State Water Board.

ILP Archive

Record of items previously posted to the Irrigated Lands Program (ILP) website.

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  Facts and Information

The central coast region represents about:

  • 7.2 million acres of land
  • 540,000 acres irrigated land
  • 3,000 agricultural operations
  • 17,000 miles of surface waters (linear streams/rivers)
  • 4,000 square miles of groundwater basins
  • 86% of water supply derived from groundwater (most dependent out of all nine hydrologic regions in the state)