A 2015 U-T survey of home water bills for the 30 largest U.S. cities found that for 200 gallons a day usage, San Diego has the 3rd highest cost – 73.7% higher than the median city surveyed. At 600 gal/day, San Diego was again 3rd highest – 81.7% higher than the median city.
http://www.sandiegouniontribune.com/news/2015/jul/27/drought-water-prices-rise/