Know Your Environment. Protect Your Health.

Haloacetic acids (HAA5)

Baton Rouge Water Company

Haloacetic acids are formed when disinfectants such as chlorine are added to tap water. The group of five haloacetic acids regulated by federal standards includes monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid and dibromoacetic acid. Read More.

Haloacetic acids are harmful during pregnancy and may increase the risk of cancer. Haloacetic acids are� genotoxic, which means that they induce mutations and DNA damage. Multiple studies by the National Toxicology Program have demonstrated the cancer-causing properties of individual haloacetic acids in laboratory animals. The Department of Health and Human Services is currently considering listing di- or tri-haloacetic acids for possible inclusion in its comprehensive Report on Carcinogens.

Click here to read more about disinfection byproducts.

 

132

Samples

0

Samples exceeding legal limit (MCL)

110

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.99 ppb3230ND - 4.00 ppb
20192.73 ppb32320.600 ppb - 7.10 ppb
20200.620 ppb209ND - 4.00 ppb
20211.29 ppb1611ND - 5.40 ppb
20222.28 ppb1615ND - 5.50 ppb
20231.90 ppb1613ND - 5.20 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for the group of five haloacetic acids, or HAA5, was defined in a peer-reviewed scientific study by EWG and represents a one-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL): 60 ppb

The legal limit for the group of five haloacetic acids (HAA5), established in 1998, was based on the need for residual disinfectant levels in water served to customers and the cost of treatment. This limit does not fully protect against the risk of cancer and harm to the developing fetus due to exposure to haloacetic acids.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-12353683490012.20 ppb
2018-01-1235368349002ND
2018-01-12353683490030.950 ppb
2018-01-12353683490043.30 ppb
2018-01-12353683490012.20 ppb
2018-01-1235368349002ND
2018-01-12353683490030.950 ppb
2018-01-12353683490043.30 ppb
2018-04-13353861440012.60 ppb
2018-04-13353861440021.80 ppb
2018-04-13353861440031.40 ppb
2018-04-13353861440040.390 ppb
2018-04-13353861440012.60 ppb
2018-04-13353861440021.80 ppb
2018-04-13353861440031.40 ppb
2018-04-13353861440040.390 ppb
2018-07-06354026090012.19 ppb
2018-07-06354026090021.90 ppb
2018-07-06354026090031.96 ppb
2018-07-06354026090043.70 ppb
2018-07-06354026090012.19 ppb
2018-07-06354026090021.90 ppb
2018-07-06354026090031.96 ppb
2018-07-06354026090043.70 ppb
2018-10-12354240300012.33 ppb
2018-10-12354240300021.60 ppb
2018-10-12354240300031.58 ppb
2018-10-12354240300044.00 ppb
2018-10-12354240300012.33 ppb
2018-10-12354240300021.60 ppb
2018-10-12354240300031.58 ppb
2018-10-12354240300044.00 ppb
2019-01-17354431630012.10 ppb
2019-01-17354431630020.920 ppb
2019-01-17354431630030.900 ppb
2019-01-17354431630047.10 ppb
2019-01-17354431630012.10 ppb
2019-01-17354431630020.920 ppb
2019-01-17354431630030.900 ppb
2019-01-17354431630047.10 ppb
2019-04-08354604860012.30 ppb
2019-04-08354604860020.600 ppb
2019-04-08354604860030.930 ppb
2019-04-08354604860044.80 ppb
2019-04-08354604860012.30 ppb
2019-04-08354604860020.600 ppb
2019-04-08354604860030.930 ppb
2019-04-08354604860044.80 ppb
2019-07-18354835350013.70 ppb
2019-07-18354835350025.10 ppb
2019-07-18354835350033.20 ppb
2019-07-18354835350045.00 ppb
2019-07-18354835350013.70 ppb
2019-07-18354835350025.10 ppb
2019-07-18354835350033.20 ppb
2019-07-18354835350045.00 ppb
2019-10-18355062380011.000 ppb
2019-10-18355062380021.000 ppb
2019-10-18355062380031.10 ppb
2019-10-18355062380044.00 ppb
2019-10-18355062380011.000 ppb
2019-10-18355062380021.000 ppb
2019-10-18355062380031.10 ppb
2019-10-18355062380044.00 ppb
2020-01-1735525188001ND
2020-01-1735525188002ND
2020-01-1735525188003ND
2020-01-1735525188004ND
2020-04-17355445950013.00 ppb
2020-04-17355445950020.360 ppb
2020-04-17355445950030.600 ppb
2020-04-17355445950042.10 ppb
2020-07-2435565714001ND
2020-07-24355657140020.450 ppb
2020-07-24355657140030.530 ppb
2020-07-2435565714004ND
2020-07-24B2003696-001ND
2020-07-24B2003696-002ND
2020-07-24B2003696-003ND
2020-07-24B2003696-004ND
2020-10-16355856730010.730 ppb
2020-10-1635585673002ND
2020-10-16355856730030.620 ppb
2020-10-16355856730044.00 ppb
2021-01-0835603486001ND
2021-01-0835603486002ND
2021-01-08356034860030.640 ppb
2021-01-0835603486004ND
2021-04-16356268130010.980 ppb
2021-04-1635626813002ND
2021-04-16356268130030.450 ppb
2021-04-1635626813004ND
2021-07-16356485750012.30 ppb
2021-07-16356485750021.61 ppb
2021-07-16356485750031.60 ppb
2021-07-16356485750043.50 ppb
2021-10-14356712520012.00 ppb
2021-10-14356712520021.10 ppb
2021-10-14356712520031.10 ppb
2021-10-14356712520045.40 ppb
2022-01-12356900340012.40 ppb
2022-01-12356900340025.40 ppb
2022-01-12356900340031.61 ppb
2022-01-12356900340041.90 ppb
2022-04-07357095600011.30 ppb
2022-04-07357095600021.000 ppb
2022-04-07357095600031.10 ppb
2022-04-07357095600045.10 ppb
2022-07-07357301280010.610 ppb
2022-07-07357301280021.10 ppb
2022-07-07357301300010.800 ppb
2022-07-07357301300025.30 ppb
2022-10-1335753779001ND
2022-10-13357537790025.50 ppb
2022-10-13357537790031.40 ppb
2022-10-13357537790041.90 ppb
2023-01-11357725260010.700 ppb
2023-01-11357725260023.70 ppb
2023-01-11357725260030.680 ppb
2023-01-11357725260040.910 ppb
2023-04-13357926650011.57 ppb
2023-04-13357926650024.30 ppb
2023-04-13357926650030.980 ppb
2023-04-13357926650041.20 ppb
2023-07-1235813146001ND
2023-07-12358131460024.60 ppb
2023-07-1235813254001ND
2023-07-1235813254002ND
2023-10-12358343960034.70 ppb
2023-10-12358343960040.720 ppb
2023-10-12358344320021.20 ppb
2023-10-19358360650015.20 ppb