Water Services Facts


  • 1 acre-foot = approximately 326,000 gallons - The amount needed to cover 1 acre of land (about the size of a football field) with water at a depth of 1 foot; enough water to serve 2 typical families in and around the home for 1 year
  • 1 cubic foot = 7.48 gallons
  • 100 cubic feet = 748 gallons – The unit of measure used to bill customers
  • GPM = gallons per minute, a measure of flow

Did You Know?

  • Anaheim operates its own state-certified water quality laboratory.
  • More than 44,000 tests are conducted by Anaheim annually to make sure drinking water meets or exceeds all state and federal standards.
  • Anaheim is one of a few cities nationwide with a "Class 1" Water System and Fire Department rating.
  • Water demand total over 20 billion gallons a year, with the highest distribution in a single day topping 107 million gallons.
  • Anaheim Public Utilities serves water to customers at elevations ranging from less than 60 feet to over 1,200 feet above sea level.
  • Groundwater, pumped by Anaheim Public Utilities' own wells, is our most reliable and inexpensive source of water.
  • Prior to the early 1940s, wells were the sole source of water for Anaheim.

Water Supply

Anaheim's water supply comes primarily from groundwater pumped from local wells, with the balance coming from purchases of imported water from the Metropolitan Water District of Southern California (MWD).

A cooperative of 26 cities and water agencies serving 19 million people in 6 counties, MWD imports water from the Colorado River and Northern California to supplement local supplies.

Supply Capacity

  • Filtration plant capacity: 10,500 gpm
  • From 16 active water system wells, average: 54,300 gpm
  • From 8 MWD connections: 76,500 gpm
  • Updated March 2019
Updated March 2019
Sources of Water for Anaheim Production
Annual Water Production 
19,509 million gallons (MG)
Metropolitan Water District  8,767 MG
From water system wells   10,742 MG 
Updated March 2019
Storage Capacity     
13 Facilities  38.75 MG
Untreated 1 Reservoir 920 MG

August F. Lenain Water Treatment Plant

Operating on a site adjacent to the 920 million gallon Walnut Canyon Reservoir, the Lenain Water Treatment Plant treats up to 15 million gallons of drinking water a day for Anaheim consumers. It is the only city-owned filtration plant in Orange County.

Lenain uses conventional treatment processes, as well as ozone disinfection, to help make sure Anaheim water continues to exceed all state and federal standards for drinking water. The facility also includes a fully equipped water quality laboratory and the operations control center for Anaheim Public Utilities' water system.
Updated March 2019
Distribution Facilities      
Fire Hydrants
Pump Stations
Water Mains 753 miles
Updated March 2019
Number of Meters      
Total Meters
Updated March 2019
Number of Gallons Sold (in Millions)      
Total Sales
Updated March 2019
Revenue from Sales      
Total Sales
Updated March 2019
Daily Demand (Millions of Gallons)      
Average Daily Demand
Peak Day Demand During Summer