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National Drinking Water Database


Barium (total) in Connecticut


Barium is a mineral that enters drinking water through drilling and mining waste runoff, discharges from chemical industries and erosion of natural deposits. [read more]

The Most Polluted Communities in Connecticut

397 water utilities reported detecting Barium (total) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Barium (total) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Farmington Line West Condominiums
Bristol, CT
511 of 11870 ppb
(1870 ppb)
2Somers Housing Authority
Somers, CT
621 of 11220 ppb
(1220 ppb)
3Roxbury Senior Housing
Roxbury, CT
361 of 11190 ppb
(1190 ppb)
4Stafford Hollow Water Association
Stafford, CT
4291 of 1899 ppb
(899 ppb)
5Woodland Summit Community Water Assn
Tolland, CT
2161 of 1790 ppb
(790 ppb)
6Woodcrest Association, Inc
Watertown, CT
601 of 1560 ppb
(560 ppb)
7Brookfield Elderly Housing
Brookfield, CT
291 of 1400 ppb
(400 ppb)
8West Service Corporation
Stafford Springs, CT
4901 of 1385.5 ppb
(385.5 ppb)
9Tyler Lake Water Co-Indian Springs
Watertown, CT
3641 of 1380 ppb
(380 ppb)
10United Water Ct, Inc.-Pleasant View
New Milford, CT
2061 of 1350 ppb
(350 ppb)

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

Violation Summary for Barium (total) in Connecticut

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Connecticut since 2004

Violation TypeNumber of Violations
Failure to monitor regularly11