Water Quality Reports > San Diego CA Drinking Water Quality Report
Water Quality Score
C
San Diego CA Drinking Water Quality
Water Quality Factors
  • Failed some Health Guidelines
  • Failed some Legal Limits
  • Met all Reporting and Monitoring Requirements
  • Uses Chlorine disinfectant

In 1960 California introduced the State Water Project (SWP) which includes 22 dams and reservoirs, a pumping plant, and a 444-mile-long aqueduct that carries water to southern California from the San Joaquin Valley. The SWP provides irrigation water to farms in the San Joaquin Valley and is a major supply source for Southern California. Thirty percent of California's total annual water supply comes from groundwater, and up to 60 percent in drought years. More than 50% of San Diego's water comes from the Colorado River and 30% is pumped from the Bay-Delta. Local supplies which include surface, groundwater, and recycled water account for only 20% of the regions water demand. In recent years, radioactive elements and potentially carcinogenic disinfectant byproducts have exceeded health guidelines.

San Diego, CA Drinking Water Top Suppliers

Water SupplierWater Supply SourcePopulation ServedService Connections
San Diego - City Of
9192 Topaz Way San Diego, CA 92123
Surface Water 1,266,731 271,962
San Diego County Water Authority
4677 Overland Ave. San Diego, CA 92123
Surface Water 3,140,000 104
Data Sources:
EPA 2012 SDWIS Report

San Diego, CA Water Quality Recent Violations

There were no health violations for in the 2010-2012 reporting periods

There were no reporting, montioring or other reported violations for in the 2010-2012 reporting periods

To see the latest EPA monitoring report for visit the EPA at SDWIS Report
To see the latest EPA monitoring report for visit the EPA at SDWIS Report

San Diego, CA Water Quality Historical Violations

Detected
26
Above Health Limits
1
Below Limits
24
ContaminantTotal Tests Positive ResultsAbove Health LimitsAbove Legal LimitsEPA RegulatedMax ResultHealth Limit Legal Limit
Total trihalomethanes (TTHMs) 66 66 0 1 Yes 94.70 - 80
Combined Uranium (mg/L) 1 1 1 0 Yes 2.80 0.50 30
Aluminum 61 1 0 0 No 60.40 - -
Barium (total) 26 10 0 0 Yes 131 2000 2000
Bromide 62 18 0 0 No 2340 - -
Bromochloroacetic acid 1 1 0 0 No 2 - -
Bromochloromethane 3 1 0 0 No 0.61 90 -
Bromodichloromethane 76 76 0 0 Yes 35.10 100 80
Bromoform 76 76 0 0 Yes 6.50 800 80
Chlorate 3 3 0 0 No 350 - -
Chloroform 76 76 0 0 Yes 9.20 70 80
Combined Uranium (pCi/L) 5 5 0 0 Yes 2.85 15 15
Dibromoacetic acid 57 53 0 0 Yes 11.30 - 60
Dibromochloromethane 76 76 0 0 Yes 30.50 60 80
Dichloroacetic acid 58 54 0 0 Yes 21.20 70 60
Gross beta particle activity (pCi/L) 4 2 0 0 Yes 4.75 15 15
m- & p- Xylene 14 1 0 0 Yes 1.04 - 10000
Manganese 61 1 0 0 No 710 300 -
Monobromoacetic acid 51 3 0 0 Yes 1.69 - 60
Monochloroacetic acid 52 1 0 0 Yes 16.69 70 60
Nitrate 62 13 0 0 Yes 1.94 10 10
Nitrate & nitrite 1 1 0 0 Yes 0.48 10 10
o-Xylene 14 1 0 0 Yes 1.17 10000 10000
Total haloacetic acids (HAAs) 57 56 0 0 Yes 46.80 70 60
Total trihalomethanes (TTHMs) 10 10 0 0 Yes 44 - 80
Trichloroacetic acid 58 56 0 0 Yes 22.70 20 60

128 Water Contaminants were tested for in the San Diego, CA area but not found in drinking water between 2004 and 2009.

Data Source: NYTimes.com

The scores and results above reflect a summary of the historical drinking water testing results that has been documented by the EPA and other sources. The color coding of the symbols was developed by WaterFilterComparisions.com as an easy way for individuals to gauge the historical effectiveness of San Diego water suppliers in meeting legal and health regulations in providing clean drinking water. This should only be used as a guide, and WaterFilterComparisons recommends you contact San Diego water suppliers to better understand the quality of the drinking water in San Diego, .