Water Quality Reports > San Jose CA Drinking Water Quality Report
Water Quality Score
F
San Jose CA Drinking Water Quality
Water Quality Factors
  • Failed some Health Guidelines
  • Passed All Legal Limits
  • Met all Reporting and Monitoring Requirements
  • Uses Chlorine plus Ammonia (Chloramines) disinfectant

Tap water in the city of San Jose comes from three different sources: groundwater, mountain water, and imported water. San Jose’s groundwater is extracted from over 100 local wells that tap into the Santa Clara Valley Basin. Mountain water is collected from the Santa Cruz Mountains and treated. Imported water is also purchased from the Santa Clara Valley Water District. In recent years, radioactive elements, arsenic and lead have exceeded health guidelines.

San Jose, CA Drinking Water Top Suppliers

Water SupplierWater Supply SourcePopulation ServedService Connections
San Jose Water Company
1221 S. Bascom Avenue San Jose, CA 95128
Surface Water 998,000 219,571
City Of San Jose - Nsj/Alviso
3025 Tuers Road San Jose, CA 95121
Purchased Surface Water 11,742 2,353
City Of San Jose - Evg/Edv/Coy
3025 Tuers Road San Jose, CA 95121
Purchased Surface Water 93,300 23,443
San Jose State University
Sjsu-Fdo, One Washington SquareOne Washington Square San Jose, CA 95192
Ground Water 30,000 1,000
Data Sources:
EPA 2012 SDWIS Report

San Jose, CA Water Quality Recent Violations

There was 1 health violation found in San Jose, CA by the EPA in the 2010-2012 reporting periods. They are listed in the table below.

Drinking Water Rule or ContaminantDate Violation Last Reported Violation TypeViolationNumber of ViolationsEnforcement Action
Total Coliform Rule 2011-02-18 Health-Based: Maximum Contaminant Level violation MCL, Monthly (TCR) 1 AO (without penalty) Issued

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
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 Jose, CA Water Quality Historical Violations

Detected
38
Above Legal Limit
0
Above Health Limits
7
Below Limits
31
ContaminantTotal Tests Positive ResultsAbove Health LimitsAbove Legal LimitsEPA RegulatedMax ResultHealth Limit Legal Limit
Alpha particle activity 185 152 152 0 Yes 9.50 - 15
Lead (total) 94 37 29 0 Yes 21.40 0.20 15
Radium-228 223 21 20 0 Yes 1.81 0.02 5
Tetrachloroethylene 272 6 6 0 Yes 0.80 0.06 5
Arsenic (total) 93 39 1 0 Yes 6 2 10
Combined Uranium (mg/L) 1 1 1 0 Yes 1.20 0.50 30
Manganese 120 62 1 0 No 490 300 -
1,1,1-Trichloroethane 272 85 0 0 Yes 4.26 200 200
1,1-Dichloroethylene 272 17 0 0 Yes 3.61 7 7
Aluminum 110 54 0 0 No 441.24 - -
Antimony (total) 93 33 0 0 Yes 0.19 6 6
Asbestos 3 1 0 0 Yes 0.20 7 7
Barium (total) 102 79 0 0 Yes 305.53 2000 2000
Beryllium (total) 93 30 0 0 Yes 0.06 4 4
Bromodichloromethane 287 23 0 0 Yes 14.40 100 80
Bromoform 287 15 0 0 Yes 9.85 800 80
Cadmium (total) 93 11 0 0 Yes 0.09 5 5
Chlorate 6 4 0 0 No 87 - -
Chloroform 285 32 0 0 Yes 51.37 70 80
Chromium (hexavalent) 8 7 0 0 Yes 5.70 - 100
Chromium (total) 99 48 0 0 Yes 9 100 100
Combined Uranium (pCi/L) 9 3 0 0 Yes 0.96 15 15
Copper 98 40 0 0 Yes 74 1300 1300
Di(2-ethylhexyl) phthalate 53 1 0 0 Yes 9.30 300 6
Dibromoacetic acid 8 1 0 0 Yes 1 - 60
Dibromochloromethane 287 24 0 0 Yes 4.20 60 80
Dichlorodifluoromethane 292 2 0 0 No 7.50 1000 -
Dichloromethane (methylene chloride) 14 2 0 0 Yes 2.30 500 5
Mercury (total inorganic) 104 35 0 0 Yes 2.32 2 2
Nitrate 436 432 0 0 Yes 9.49 10 10
Nitrate & nitrite 78 74 0 0 Yes 7.30 10 10
Nitrite 94 18 0 0 Yes 0.50 1 1
Selenium (total) 96 52 0 0 Yes 7.80 50 50
Silver (total) 100 19 0 0 No 2.06 100 -
Thallium (total) 93 17 0 0 Yes 0.05 0.50 2
Total haloacetic acids (HAAs) 15 2 0 0 Yes 10 70 60
Total trihalomethanes (TTHMs) 298 49 0 0 Yes 69.30 - 80
Vanadium 44 42 0 0 No 10.63 - -

140 Water Contaminants were tested for in the San Jose, 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 Jose 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 Jose water suppliers to better understand the quality of the drinking water in San Jose, .