Water Quality

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Does the City publish an annual Water Quality Report?

Each year prior to July 1st, the City publishes an Annual Water Quality Report. Since 1991, California water utilities have been providing an annual Water Quality Report to their customers. This year’s report covers calendar year 2018 water quality testing, and has been prepared in compliance with new regulations called for in the 1996 reauthorization of the Safe Drinking Water Act. The reauthorization charged the United States Environmental Protection Agency (EPA) with updating and strengthening the tap water regulatory program and changed the report’s due date to July 1.

 2019 Water Quality Report

       2019 Water Quality Report 

       2018 Water Quality Report

       2017 Water Quality Report

       2016 Water Quality Report

       2015 Water Quality Report

       2014 Water Quality Report


       Additional Water Quality Reports      


How is wastewater treated?

Wastewater is not just sewage. All of the water used in the home that goes down the drains or into the sewage collection system is wastewater. This includes water from baths, showers, sinks, dishwashers, washing machines, and toilets. Small businesses and industries can also contribute large amounts of wastewater to sewage collection systems. The average American contributes 150 gallons of wastewater each day. Wastewater is about 99% water by weight and is generally referred to as influent as it enters the wastewater treatment facility.

Wastewater that comes from homes and business in the City of San Clemente's service area is treated through 5 different processes:

  • Preliminary Treatment – Removes grit, rags, and other inorganic heavy debris.
  • Primary Settling – Settles the heavier organic solids.
  • Aeration (Activated Sludge) – Aerobic bacteria consumes smaller organics called suspended solids (SS) or biological oxygen demand (BOD).
  • Secondary Settling – Settles out microorganism in the activated sludge that consumed the suspended solids.
  • Tertiary Filtration –  Filters out remaining waste particles through sand filtration.

Through these five treatment processes, the City is capable of producing approximately 5.0 million gallons of reclaimed water to be used for irrigation and treatment plant processes. The City currently supplies reclaimed water for the water reclamation plant, two golf courses in the City (the Municipal Golf Course, and Bella Collina), and also to approximately 46 other sites consisting of city parks & medians, HOA’s , schools, and other reclaimed water users.


San Clemente 2015 Urban Water Management Plan

Click the link above to view the City's 2015 Urban Water Management Plan (UWMP). This UWMP is to provide the CA Dept. of Water Resources with information on the present and future water resources and demands and provides an assessment of the City's water resource needs. The City's 2015 UWMP has been prepared in compliance with the requirements of the Urban Water Management Planning Act as amended in 2009, and includes the following analysis:

  • Water Service Area & Facilities
  • Water Sources & Supplies
  • Water Use by Customer Type
  • Demand Management Measures(Conservation Programs & Activities)
  • Water Supply Reliability
  • Planned Water Supply Projects & Programs
  • Water Shortage Contingency Plan
  • Recycled Water

    2015 Urban Water Management Plan (UWMP) 


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