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National Drinking Water Database


Total haloacetic acids (HAAs) in Iowa


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 Iowa

455 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)
1Bloomfield Muni Water Dept
Bloomfield, IA
2,60121 of 2167.45 ppb
(14.4 to 167 ppb)
2Iowa State Penitentiary
Fort Madis, IA
1,20023 of 2355.13 ppb
(20.5 to 75 ppb)
3Davis City Water Supply
Creston, IA
27514 of 1454.43 ppb
(21 to 102 ppb)
4Ellston Municipal Water Works
Creston, IA
5714 of 1450.21 ppb
(22 to 78 ppb)
5Diagonal Water Department
Diagonal, IA
31213 of 1347.85 ppb
(30 to 71 ppb)
6Bedford Water Works
Bedford, IA
1,62022 of 2347.32 ppb
(0 to 98.9 ppb)
7Arcml06 Llc - Five Seasons
Galesburg, IA
67510 of 1045.73 ppb
(18.75 to 136 ppb)
8Sirwa #2 (Creston)
Creston, IA
22,72128 of 2844.81 ppb
(28 to 79.13 ppb)
9Blockton Water Supply
Blockton, IA
1925 of 544.8 ppb
(40 to 50 ppb)
10Kellerton Water Supply
Kellerton, IA
3729 of 943.67 ppb
(36 to 57 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 Iowa

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

Violation TypeNumber of Violations
Monitoring and Reporting Disinfection Byproduct Rule124
Over maximum contaminant level, Average28