The Power of Information

National Drinking Water Database


Artesian Water Company Utilities - Wilmington, DE


Serves 201,000 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
66 days
Tests ConductedNumber of individual tests done for this contaminant
163 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.79.41 ppb
196 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
2007-08-0741 ppb1041 ppb
2007-08-0242.33 ppb3037 to 48 ppb
2007-07-25109 ppb10109 ppb
2007-06-1342 ppb1042 ppb
2007-05-23116.67 ppb6091 to 145 ppb
2007-04-2579.75 ppb4010 to 116 ppb
2007-03-22108.43 ppb30104.3 to 116 ppb
2007-03-2061 ppb3026 to 104 ppb
2007-02-2253.67 ppb310 to 133 ppb
2007-02-2180.04 ppb5015.2 to 109 ppb
2007-01-09196 ppb10196 ppb
2007-01-03140 ppb10140 ppb
2006-01-30127 ppb10127 ppb
2006-01-2825 ppb1025 ppb
2006-01-2646 ppb1046 ppb
2006-01-25105.5 ppb4097 to 117 ppb
2006-01-2433 ppb1033 ppb
2006-01-22102 ppb10102 ppb
2006-01-2154 ppb1054 ppb
2006-01-1842.33 ppb308 to 110 ppb
2006-01-14119.5 ppb2095 to 144 ppb
2006-01-1288.4 ppb10066 to 125 ppb
2006-01-0779.5 ppb4038 to 94 ppb
2006-01-0628 ppb1028 ppb
2006-01-05188.57 ppb70160 to 240 ppb
2005-01-28118 ppb20113 to 123 ppb
2005-01-2799.5 ppb207 to 192 ppb
2005-01-2572 ppb6017 to 121 ppb
2005-01-2374.15 ppb4028 to 130 ppb
2005-01-2299 ppb1099 ppb
2005-01-1747.75 ppb4038 to 52 ppb
2005-01-16147.5 ppb20135 to 160 ppb
2005-01-1552.81 ppb1000.09 to 107 ppb
2005-01-130.03 ppb100.03 ppb
2005-01-1295 ppb1095 ppb
2005-01-0336 ppb1036 ppb
2004-12-0944 ppb1044 ppb
2004-07-15125 ppb10125 ppb
2004-06-1528.5 ppb2019 to 38 ppb
2004-06-100 ppb110 ppb
2004-05-20114.5 ppb20112 to 117 ppb
2004-04-29113 ppb10113 ppb
2004-04-2733 ppb1033 ppb
2004-04-15100 ppb10100 ppb
2004-03-3091 ppb1091 ppb
2004-03-2460.5 ppb2011 to 110 ppb
2004-03-1876 ppb2047 to 105 ppb
2004-02-2591.5 ppb2029 to 154 ppb
2004-02-19124 ppb10124 ppb
2004-02-03106 ppb10106 ppb
2004-01-3091 ppb1091 ppb
2004-01-29113 ppb10113 ppb
2004-01-28156 ppb40118 to 194 ppb
2004-01-2733 ppb1033 ppb
2004-01-2591.5 ppb2029 to 154 ppb
2004-01-2453.5 ppb4011 to 110 ppb
2004-01-20117.83 ppb60110 to 131 ppb
2004-01-19124.5 ppb20124 to 125 ppb
2004-01-1876 ppb2047 to 105 ppb
2004-01-1731 ppb1031 ppb
2004-01-1570.5 ppb4019 to 125 ppb
2004-01-1034.33 ppb310 to 52 ppb
2004-01-0941.33 ppb3031 to 49 ppb
2004-01-0550 ppb1050 ppb
2004-01-0382 ppb510 to 147 ppb
2004-01-0118.2 ppb1018.2 ppb