UWM Plan - Municipal Water District of Orange County

Section 6
Recycled Water
OCWD Groundwater Replenishment System Expansion - At this time, OCWD has
designed and approved proceeding with the Phase 2 expansion of GWRS, which will
recycle approximately another 30 MGD of effluent. Investments beyond Phase 2 have not
been approved by OCWD and would require further review before proceeding. If the
further envisioned phase of the project is approved and developed, it is projected that up
to 120 MGD of water will be produced.
IRWD Michelson Water Reclamation Plant Expansion - Michelson Water Reclamation
Plant (MWRP) currently has a maximum influent capacity of 18 MGD. To keep up with
a growing demand for potable water and a decreasing imported water supply, IRWD will
increase the capacity from 18 MGD to 28 MGD by 2025. Design of this project started in
September 2006 and was completed in March 2009. Construction began in September
2009 and is anticipated to be completed by July 2012.
San Clemente Water Reclamation Plant Expansion - The San Clemente Water
Reclamation Plant located within the City currently has a capacity of 2.2 MGD. The City
of San Clemente plans to expand the plant to 4.4 MGD. The expansion will include
nearly 9 miles of pipelines, conversion of a domestic water reservoir to recycled water
storage, and a pressure reducing station as well as an interconnection with SMWD.
Design of this project was completed in spring 2010 and construction is estimated to
begin in the fall of 2011 with the first phase of new recycled water customers to come
online in 2013.
SMWD Chiquita Water Reclamation Plant Expansion - Chiquita Water Reclamation
Plant (CWRP) currently has a capacity of 5 MGD. SMWD plans to expand the plant to
10 MGD by 2015. The expansion will increase total production and reduce dependency
on imported water.
SCWD Aliso Creek Water Harvesting Project - SCWD has conducted a preliminary
investigation of a project to intercept and treat a portion of the urban runoff in lower
Aliso Creek to supplement the recycled water system. This would improve the quality of
the recycled water supply to make it more attractive for irrigation users. Treatment would
include filtration and reverse osmosis facilities near SOCWA’s CTP. The plant would
produce up to 0.5 MGD of low TDS water.
Tables 6-4 and 6-5 represent projected recycled water use within MWDOC’s service area
through 2035. Recycled water use will increase by 50% through the 25-year period, with
landscape irrigation as its sole use.
Municipal Water District of Orange County
2010 Regional Urban Water Management Plan
Final
6-9