The Power of Information

National Drinking Water Database


Total haloacetic acids (HAAs) in Idaho


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 Idaho

149 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)
1Clearwater Water Dist
Kooskia, ID
9816 of 1662.91 ppb
(38 to 108 ppb)
2City of Bonners Ferry
Bonners Ferry, ID
3,20022 of 2252.28 ppb
(9 to 97 ppb)
3Elk City Water and Sewer Assn
Elk City, ID
3604 of 442.4 ppb
(32 to 47 ppb)
4Castle Mountain Creeks Owners Assn
Boise, ID
27512 of 1542.02 ppb
(0 to 95.3 ppb)
5Twenty Mile Creek Water Assn
Sandpoint, ID
30010 of 1039.6 ppb
(2 to 116 ppb)
6Colburn Water Assn
Sandpoint, ID
2768 of 839.38 ppb
(24 to 63 ppb)
7City of Elk River
Elk River, ID
1656 of 839.38 ppb
(0 to 173 ppb)
8Bee Line Water Assn Inc
Sandpoint, ID
1219 of 1034.5 ppb
(0 to 83 ppb)
9Carlin Bay Property Owners Association
ID
946 of 632.53 ppb
(3.2 to 58 ppb)
10Harbor View Estates Water & Sewer Dist
Coeur D Alene, ID
1305 of 527.94 ppb
(24 to 35.8 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 Idaho

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

Violation TypeNumber of Violations
Monitoring and Reporting Disinfection Byproduct Rule93
Over maximum contaminant level, Average7
Over maximum contaminant level, Single Sample5