Oceanside officially broke ground Wednesday on an innovative water recycling plant that will provide 32% of the city’s water supply in future years.

Although San Diego is working on a similar and larger project, Pure Water Oceanside will be the first operating advanced purification facility in the county.

The plan will use microfiltration, reverse osmosis and ultraviolet light to purify wastewater from the San Luis Rey Water Reclamation Facility, reducing the city’s reliance on water imported from the Colorado River and Sacramento Bay Delta.