Water Use

Average temperatures in San Diego have continued to be above average in most recent months. In spite of warmer temperatures, monthly water use has continued to decrease, in most months, over the 2013 base period. For the 20 months ended January 2017, potable municipal and industrial (M&I) use has decreased 20 percent over the base period.

Water Use Totals

Per capita water use in the Water Authority’s service area has fallen from more than 200 gallons per person/day to less than 120 gpcd over the past decade, as shown in the chart to the right. In 2016, total regional use of potable water was about 33 percent less than it was in 1990, despite a population increase of approximately 32 percent over that period.

The table below details regional water use (excluding recycled water) by month and year. It shows that total potable water use for the Water Authority service area for the 12 months ended January 2017 was up 2.1 percent compared to the year-earlier period. Urban (Municipal and Industrial) potable use for the same period was up 2.2 percent. For January 2017, total potable water use was down 10.5 percent over the same month a year earlier.

Calendar Years 2007-2017 (acre-feet)

Date Total Water Use1 M&I Water Use (Adjusted)2
Jan-07 50,449.4 44,790.0
Feb-07 33,494.8 31,397.5
Mar-07 49,106.6 44,151.3
Apr-07 53,876.8 48,039.7
May-07 65,470.1 57,627.3
Jun-07 70,605.8 62,931.3
Jul-07 79,205.8 70,574.4
Aug-07 77,999.5 68,610.3
Sep-07 70,260.0 62,425.4
Oct-07 64,435.2 57,011.6
Nov-07 53,724.2 48,136.7
Dec-07 33,925.9 32,357.6
Jan-Dec 2007 702,554.1 628,053.1
     
Jan-08 31,850.4 31,261.3
Feb-08 28,412.2 28,099.4
Mar-08 45,399.2 43,502.6
Apr-08 56,454.6 52,726.6
May-08 59,862.0 56,505.6
Jun-08 64,986.9 60,968.7
Jul-08 70,053.1 65,328.1
Aug-08 69,044.6 64,498.8
Sep-08 62,921.8 58,435.2
Oct-08 63,030.8 58,277.2
Nov-08 49,346.1 45,854.1
Dec-08 32,480.9 31,265.1
Jan-Dec 2008 633,842.6 596,722.7
     
Jan-09 38,998.5 36,590.2
Feb-09 30,739.4 29,407.6
Mar-09 44,220.4 40,925.8
Apr-09 49,517.4 44,953.4
May-09 55,955.3 50,511.1
Jun-09 51,236.4 46,751.1
Jul-09 60,204.0 53,967.5
Aug-09 61,909.4 55,325.0
Sep-09 60,049.9 53,269.2
Oct-09 53,265.7 47,945.3
Nov-09 46,740.5 42,228.5
Dec-09 30,449.7 29,045.1
Jan-Dec 2009 583,286.6 530,919.8
     
Jan-10 31,491.1 30,195.1
Feb-10 23,521.9 23,277.7
Mar-10 34,205.6 33,180.0
Apr-10 35,132.2 33,241.6
May-10 49,777.1 46,081.2
Jun-10 54,121.6 49,662.8
Jul-10 57,653.9 51,874.6
Aug-10 59,971.5 53,724.3
Sep-10 55,661.0 49,556.2
Oct-10 38,954.5 35,687.0
Nov-10 36,448.8 33,947.6
Dec-10 31,088.8 29,304.4
Jan-Dec 2010 508,028.0 469,732.5
     
Jan-11 32,028.4 30,836.3
Feb-11 29,527.6 27,871.5
Mar-11 30,029.6 29,106.5
Apr-11 38,501.1 35,971.1
May-11 48,465.9 44,530.1
Jun-11 52,125.6 47,372.8
Jul-11 59,627.3 53,673.7
Aug-11 60,432.9 54,080.2
Sep-11 53,789.8 48,127.2
Oct-11 47,462.5 42,969.1
Nov-11 31,168.5 29,281.5
Dec-11 33,408.6 31,191.5
Jan-Dec 2011 516,567.8 475,011.5
     
Jan-12 36,484.6 33,213.9
Feb-12 32,468.4 29,642.2
Mar-12 33,932.6 31,481.8
Apr-12 35,044.0 32,629.8
May-12 48,672.0 44,366.6
Jun-12 54,986.9 49,320.3
Jul-12 59,792.7 53,509.1
Aug-12 62,646.3 55,582.9
Sep-12 58,065.1 51,689.8
Oct-12 50,980.3 45,606.7
Nov-12 42,130.3 38,026.2
Dec-12 29,648.4 27,874.4
Jan-Dec 2012 544,851.6 492,943.7
     
Jan-13 31,183.1 29,906.4
Feb-13 29,270.0 27,827.1
Mar-13 38,481.6 36,107.8
Apr-13 45,975.0 42,156.8
May-13 52,079.5 47,883.5
Jun-13 56,409.3 51,647.8
Jul-13 58,994.1 53,797.7
Aug-13 59,549.1 54,336.4
Sep-13 56,811.3 51,572.7
Oct-13 48,660.8 44,826.0
Nov-13 39,752.4 36,818.1
Dec-13 37,213.3 34,505.5
Jan-Dec 2013 554,379.5 511,385.8
     
Jan-14 43,617.6 39,733.6
Feb-14 35,104.9 32,220.4
Mar-14 36,716.0 34,582.8
Apr-14 44,734.6 41,042.4
May-14 57,103.6 51,670.6
Jun-14 56,084.9 51,212.2
Jul-14 59,210.7 54,084.2
Aug-14 55,495.8 50,359.4
Sep-14 54,262.5 48,961.4
Oct-14 52,199.6 47,208.6
Nov-14 40,417.2 37,156.0
Dec-14 26,144.5 25,217.3
Jan-Dec 2014 561,091.9 513,448.9
     
Jan-15 31,077.6 29,774.5
Feb-15 33,492.6 31,022.0
Mar-15 39,802.3 37,006.4
Apr-15 42,956.3 39,148.1
May-15 35,657.6 33,246.2
Jun-15 41,627.7 37,963.1
Jul-15 39,239.5 36,115.8
Aug-15 44,506.1 40,556.6
Sept-15 40,859.3 37,493.6
Oct-15 38,844.3 35,751.6
Nov-15 33,885.2 31,322.6
Dec-15 29,907.0 28,090.0
Jan-Dec 2015 451,855.5 417,490.5
     
Jan-16 25,221.6 24,548.3
Feb-16 30,905.5 29,006.4
Mar-16 31,605.7 29,682.2
Apr-16 34,972.5 32,454.9
May-16 38,285.4 35,412.2
Jun-16 43,913.0 40,015.3
Jul-16 49,604.0 44,618.1
Aug-16 50,667.9 46,142.3
Sep-16 44,215.0 40,513.8
Oct-16 44,251.1 40,672.3
Nov-16 36,760.6 33,990.7
Dec-16 27,647.7 26,533.4
Jan-Dec 2016 458,050.0 423,589.9
     
Jan-17 22,561.7 22,344.9
Feb-17 - -
Mar-17 - -
Apr-17 - -
May-17 - -
Jun-17 - -
Jul-17 - -
Aug-17 - -
Sep-17 - -
Oct-17 - -
Nov-17 - -
Dec-17 - -
Jan-Dec 2017 22,561.7 22,344.9

Footnotes:

1 Excludes reclaimed water.
2 In order to provide for a meaningful comparison, 2007 M&I water use was adjusted for 2009-2011 IAWP and SAWR opt-out volumes that convert to M&I water use.
Note: Tables reflect most current data.