Lancaster Water Reclamation Plant

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Lancaster WRP aerial Lancaster Water Reclamation Plant
1865 West Avenue D
Lancaster, CA 93534
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The Lancaster Water Reclamation Plant (WRP) currently provides primary, secondary, and tertiary treatment for a design capacity of 18 million gallons of wastewater per day (MGD), and serves a population of approximately 160,000 people.

View the tributary service area

In addition to producing recycled water, the Lancaster WRP processes all wastewater solids generated at the plant. The wastewater solids are anaerobically digested, centrifugally dewatered, and further dried in drying beds. The dried biosolids are hauled away and beneficially used. Methane gas is produced during the digestion process and is used to heat the anaerobic digesters.

Learn more about our wastewater treatment process

View the diagram below for an enlarged view of the treatment process at Lancaster WRP.

Lancaster WRP schematic

Water Reuse

Approximately 12.6 MGD of recycled water is used at over 55 different sites. Recycled water is used for landscape irrigation and other municipal and industrial purposes in the City of Lancaster, and to maintain water levels at Apollo Lakes Regional Park and Piute Ponds. The remaining recycled water is used for irrigation of fodder crops.

Learn more about the Sanitation Districts' recycled water program
Water Recycling Brochure

History

The Lancaster WRP occupies 554 acres east of the Antelope Valley (CA SR-14) Freeway. The plant was placed in operation on September 24, 1959. It replaced a previous plant, which was located on Avenue H between 20th and 30th Streets West. This previous plant began operation on December 2, 1941. The plant’s capacity was expanded to 8 MGD in 1989, with 460 million gallons (1,400 AF) of storage ponds to capture excess winter flows. The Stage III expansion increased plant capacity to 10 MGD in December 1992. The Stage IV expansion, consisting of a flow equalization basin, two sedimentation tanks, and additional aeration equipment in the oxidation ponds, increased the plant’s secondary treatment capacity to 16 MGD in May 1997. The Lancaster WRP completed its conversion to full tertiary treatment in mid-2012 with a capacity of 18 MGD.

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