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National Drinking Water Database


Total haloacetic acids (HAAs) in Arkansas


Total haloacetic acids refers to the sum of the concentrations of five related disinfection byproducts in a water sample: dichloroacetic acid, trichloroacetic acid, monochloroacetic acid, monobromoacetic acid and dibromoacetic acid. [read more]

The Most Polluted Communities in Arkansas

662 water utilities reported detecting Total haloacetic acids (HAAs) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Total haloacetic acids (HAAs) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Wire Road Water System
Stephens, AR
76930 of 3074.76 ppb
(22.73 to 150 ppb)
2Hwy 4 24 Water Association
Chidester, AR
2,17931 of 3167.92 ppb
(1.5 to 140.15 ppb)
3Buena Vista-Ogemaw Water Assoc
Stephens, AR
79426 of 2766.3 ppb
(0 to 131.67 ppb)
4Subiaco City Waterworks
N/a, AR
4703 of 366.03 ppb
(46.15 to 79.35 ppb)
5Plainview Water Department
Plainview, AR
1,31225 of 2564.88 ppb
(10.6 to 165 ppb)
6Subiaco Academy Waterworks
Subiaco, AR
25024 of 2464.83 ppb
(8.3 to 130 ppb)
7Carbon City Water
Paris, AR
15024 of 2461.84 ppb
(31.9 to 112 ppb)
8Montgonery Co Regional Pwa
Mount Ida, AR
638 of 861.42 ppb
(26.9 to 125.67 ppb)
9Pangburn Waterworks
Pangburn, AR
2,46427 of 2761.3 ppb
(21.2 to 117 ppb)
10Camden Waterworks
Camden, AR
13,01039 of 3960.8 ppb
(19.97 to 138.5 ppb)

Health Based Limits for Total haloacetic acids (HAAs)

StandardDescriptionLevel
One in one million (10-6) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.0.7 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.60 ppb
One in ten thousand (10-4) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.70 ppb
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.70 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.450 ppb
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.5200 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.5200 ppb

Violation Summary for Total haloacetic acids (HAAs) in Arkansas

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

Violation TypeNumber of Violations
Over maximum contaminant level, Average121
Over maximum contaminant level, Single Sample9