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Irrigated Lands Program (ILP)

Welcome to the 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.

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  Facts and Information

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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)

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