The Power of Information

National Drinking Water Database


San Gabriel Valley WC - Fontana Utilities - Los Angeles, CA


Serves 102,599 people

Barium (total)

Barium is a mineral that enters drinking water through drilling and mining waste runoff, discharges from chemical industries and erosion of natural deposits.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
0 days
Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)
0 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
73 days
Tests ConductedNumber of individual tests done for this contaminant
185 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Barium (total)Barium is a mineral that enters drinking water through drilling and mining waste runoff, discharges from chemical industries and erosion of natural deposits.26.63 ppb
52 ppb
No
700 ppb
No
2000 ppb
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Health Based and Legal Limits for Barium (total)

Health Based Limits for Barium (total)

StandardDescriptionLevel
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.700 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.700 ppb
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.1000 ppb
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.2000 ppb
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.2000 ppb
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.2000 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.7000 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-03-100 ppb550 ppb
2009-03-040 ppb330 ppb
2009-02-250 ppb110 ppb
2009-02-1820.33 ppb620 to 40 ppb
2009-02-0423 ppb5018 to 37 ppb
2008-10-2918 ppb1018 ppb
2008-10-1528 ppb3021 to 37 ppb
2008-07-0821.33 ppb6011 to 39 ppb
2008-06-1125.45 ppb408.8 to 37 ppb
2008-06-0433.5 ppb2033 to 34 ppb
2008-05-2823.33 ppb3016 to 27 ppb
2008-05-2141.33 ppb3039 to 46 ppb
2008-04-0939 ppb3029 to 47 ppb
2008-04-0237 ppb1037 ppb
2008-03-2742 ppb1042 ppb
2008-03-1917.75 ppb4013 to 30 ppb
2008-03-1236.67 ppb6021 to 50 ppb
2008-03-0517.5 ppb2017 to 18 ppb
2007-11-1315 ppb1015 ppb
2007-10-0326.67 ppb3020 to 39 ppb
2007-09-1834 ppb2034 ppb
2007-09-1238.67 ppb3036 to 41 ppb
2007-09-1142.75 ppb4037 to 47 ppb
2007-08-2917.86 ppb7011 to 40 ppb
2007-08-2218.33 ppb3017 to 20 ppb
2007-07-2535 ppb2031 to 39 ppb
2007-06-2722.5 ppb2020 to 25 ppb
2007-05-1742.5 ppb2033 to 52 ppb
2007-05-1615 ppb1015 ppb
2007-05-0927.14 ppb7020 to 35 ppb
2007-04-2540.5 ppb2040 to 41 ppb
2007-03-2830.5 ppb2020 to 41 ppb
2007-03-2136 ppb1036 ppb
2007-03-1420 ppb1020 ppb
2006-12-0722.5 ppb2012 to 33 ppb
2006-11-2727.67 ppb3019 to 37 ppb
2006-09-2151 ppb2048 to 54 ppb
2006-09-1918.14 ppb508.9 to 42 ppb
2006-09-1833.43 ppb7030 to 40 ppb
2006-09-1512.88 ppb410 to 37 ppb
2006-09-1117 ppb1017 ppb
2006-07-0543 ppb1043 ppb
2006-06-2734 ppb1034 ppb
2006-06-1440 ppb2033 to 47 ppb
2006-06-1225.83 ppb6017 to 37 ppb
2006-06-0835 ppb4029 to 42 ppb
2006-03-1713.35 ppb209.7 to 17 ppb
2006-03-1523 ppb1023 ppb
2006-01-2619 ppb1019 ppb
2005-12-2737 ppb1037 ppb
2005-12-2135.5 ppb2030 to 41 ppb
2005-12-1536.33 ppb3032 to 41 ppb
2005-12-1342 ppb1042 ppb
2005-12-0515.5 ppb2014 to 17 ppb
2005-12-0124.67 ppb3014 to 32 ppb
2005-11-2213 ppb1013 ppb
2005-09-0210 ppb1010 ppb
2005-08-0515 ppb1015 ppb
2005-07-2212.97 ppb307.9 to 16 ppb
2005-07-2030 ppb1030 ppb
2005-07-1934.5 ppb2034 to 35 ppb
2005-05-2321 ppb1021 ppb
2005-05-1330 ppb1030 ppb
2005-03-2924 ppb2018 to 30 ppb
2005-03-1813.5 ppb2012 to 15 ppb
2005-03-1714 ppb2012 to 16 ppb
2004-12-0823.25 ppb4012 to 40 ppb
2004-08-2533 ppb1033 ppb
2004-07-1529 ppb2023 to 35 ppb
2004-06-2326 ppb2026 ppb
2004-04-2952 ppb1052 ppb
2004-02-2536 ppb1036 ppb
2004-01-2633 ppb1033 ppb