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National Drinking Water Database


Barium (total) in Arizona


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 Arizona

527 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)
1Verde Santa FE Water Co, Llc
Denver, AZ
2,2801 of 1550 ppb
(550 ppb)
2City of Cottonwood
Tempe, AZ
1,5191 of 1495 ppb
(495 ppb)
3Forest Highlands Water Co
Flagstaff, AZ
2,0892 of 3483.33 ppb
(0 to 1090 ppb)
4Pinehurst Water Co
Prescott, AZ
411 of 1480 ppb
(480 ppb)
5Cordes Lake-Verde I
Tempe, AZ
8451 of 1465 ppb
(465 ppb)
6Cordes Lake-Verde Vi
Tempe, AZ
2,3001 of 1442 ppb
(442 ppb)
7West Village Water Co
Flagstaff, AZ
1501 of 2440 ppb
(0 to 880 ppb)
8Verde Village
Tempe, AZ
3,2621 of 1431.67 ppb
(431.67 ppb)
9Verde Valley Manor
Cottonwood, AZ
2651 of 1420 ppb
(420 ppb)
10Montezuma Rimrock Wc, Llc
Rim Rock, AZ
4563 of 3411.67 ppb
(385 to 430 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 Arizona

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

Violation TypeNumber of Violations
Failure to monitor regularly49
Over maximum contaminant level, Average1