General Plan Update - City of Inglewood

3.1 Water System
The Sanford M. Anderson Treatment Plant (Anderson Treatment Plant), a three acre site,
is located on the southwest corner of Eucalyptus Avenue and Beach Avenue, within the
City, and was constructed to treat the City’s groundwater for iron and manganese.
Currently, the Anderson Treatment Plant has a capacity of 8.64 million gpd and a
clearwell capacity of 834,000 gallons. The treated water is then pumped from the
treatment plant to the North Inglewood and Morningside facilities. The raw well water is
conveyed directly to the City’s treatment plant (Sanford M Anderson Treatment Plant) via
a 12-inch to 27-inch diameter raw well water transmission main.
Water Demand and Supply
The City of Inglewood’s historic water production was established from records of well
production and purchased imported water from two Metropolitan Water District
connections.
The annual water purchase and well production over the last seven years has averaged a
total of 12096.44 AF/year. The City pumped an annual average of 5,601 AF of local
groundwater and imported 6,394 AF of MWD water over the last seven fiscal years. 23 The
percentage of the total water supply that was provided by groundwater averages
approximately 43 percent per year. About 57 percent of the total water supply was
provided by imported water from MWD.
Demand variations through a year are influenced by seasonal effects. Peak and low
monthly consumption occur during the dry summer months and wet winter months.
Peak demands occur in June and August, and the 2001-2002 monthly water demands
were 1046.10 AF in June, and 1118.43 in August 01-02. Low demands occur in February,
with a monthly water demand of 757.67. 24 The highest and lowest demand factors are
1.31 and 0.57 respectively.
In FY 2004–2005 the City had an available supply of 11,751.45 AF from groundwater
and purchased water. Projected water supplies to 2030 are derived from the adjudicated
water rights, the 18 year averages for carryovers, net leases/exchanges and purchased
water. Table 3.1-1 refers to the current and projected supply though 2030. The one factor
that is constant throughout the period is the adjudicated water rights – the city produced
groundwater, of 4449.89 AF/year.
23 City of Inglewood, Water Master Plan, 2003, Executive Summary, AKM Consulting Engineers, pp5-1
24 Ibid., pp5-2.
City of Inglewood General Plan Update Technical Background Report
3.1-7