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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

Clermont Public Water System

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.

MORE ABOUT THIS CONTAMINANT

 

184

Samples

6

Samples exceeding legal limit (MCL)

150

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
201424.7 ppb3229ND - 42.5 ppb
201526.6 ppb3226ND - 68.0 ppb
201625.9 ppb3227ND - 57.3 ppb
201729.9 ppb3226ND - 62.8 ppb
201830.7 ppb3225ND - 71.9 ppb
201920.2 ppb2417ND - 48.8 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-03-12A14019073219.1 ppb
2014-03-12A14019073329.2 ppb
2014-03-12A14019073422.3 ppb
2014-03-12A14019073516.7 ppb
2014-03-12A14019073615.5 ppb
2014-03-12A14019073720.5 ppb
2014-03-12A140190738ND
2014-03-12A14019073922.5 ppb
2014-06-11A14019158140.1 ppb
2014-06-11A14019158222.1 ppb
2014-06-11A14019158335.6 ppb
2014-06-11A14019158437.1 ppb
2014-06-11A14019158639.0 ppb
2014-06-11A14019157938.3 ppb
2014-06-11A14019158040.2 ppb
2014-06-11A14019158520.0 ppb
2014-09-24A14021737121.9 ppb
2014-09-24A14021737327.7 ppb
2014-09-24A14021737413.4 ppb
2014-09-24A1402173756.00 ppb
2014-09-24A14021737625.3 ppb
2014-09-24A140217377ND
2014-09-24A14021737231.5 ppb
2014-09-24A14021737830.0 ppb
2014-12-10A14021762327.8 ppb
2014-12-10A14021762438.8 ppb
2014-12-10A14021762636.5 ppb
2014-12-10A14021762942.5 ppb
2014-12-10A14021689021.3 ppb
2014-12-10A140217625ND
2014-12-10A14021762715.7 ppb
2014-12-10A14021762832.8 ppb
2015-03-11A15023213929.6 ppb
2015-03-11A15023214030.2 ppb
2015-03-11A15023214124.3 ppb
2015-03-11A15023214223.7 ppb
2015-03-11A15023214421.4 ppb
2015-03-11A15023214310.2 ppb
2015-03-11A150232145ND
2015-03-11A15023214630.0 ppb
2015-06-10A15028578335.0 ppb
2015-06-10A15028578630.6 ppb
2015-06-10A150285787ND
2015-06-10A15028578855.4 ppb
2015-06-10A150285789ND
2015-06-10A15028578467.1 ppb
2015-06-10A15028579068.0 ppb
2015-06-11A15028578562.5 ppb
2015-09-09A15032001926.5 ppb
2015-09-09A15032002431.9 ppb
2015-09-09A150320025ND
2015-09-09A15032002043.4 ppb
2015-09-09A15032002145.3 ppb
2015-09-09A15032002220.9 ppb
2015-09-09A150320023ND
2015-09-09A15032002641.1 ppb
2015-12-09A15033184221.7 ppb
2015-12-09A15033184328.9 ppb
2015-12-09A15033184424.3 ppb
2015-12-09A15033184515.9 ppb
2015-12-09A1503318468.70 ppb
2015-12-09A15033184725.3 ppb
2015-12-09A150331848ND
2015-12-09A15033184928.1 ppb
2016-03-08A16033847829.2 ppb
2016-03-08A16033847944.7 ppb
2016-03-08A16033848039.3 ppb
2016-03-08A16033848121.0 ppb
2016-03-08A16033848224.4 ppb
2016-03-08A16033848338.5 ppb
2016-03-08A160338500ND
2016-03-08A16033850137.6 ppb
2016-06-08A16039923735.7 ppb
2016-06-08A160399238ND
2016-06-08A16039923930.0 ppb
2016-06-08A16039924021.1 ppb
2016-06-08A16039924117.0 ppb
2016-06-08A16039924234.4 ppb
2016-06-08A16039924625.7 ppb
2016-06-08A16039924745.4 ppb
2016-09-13A16043541031.4 ppb
2016-09-13A16043541137.1 ppb
2016-09-13A16043541257.3 ppb
2016-09-13A16043541332.3 ppb
2016-09-13A160435414ND
2016-09-13A16043541555.0 ppb
2016-09-13A160435416ND
2016-09-13A16043541751.7 ppb
2016-12-13A16046303420.3 ppb
2016-12-13A16046303522.7 ppb
2016-12-13A16046303619.8 ppb
2016-12-13A16046303715.2 ppb
2016-12-13A1604630387.70 ppb
2016-12-13A16046303911.9 ppb
2016-12-13A160463040ND
2016-12-13A16046304123.3 ppb
2017-03-14A17048728930.3 ppb
2017-03-14A17048729031.7 ppb
2017-03-14A17048729123.5 ppb
2017-03-14A17048736718.7 ppb
2017-03-14A1704873688.10 ppb
2017-03-14A17048736927.2 ppb
2017-03-14A170487370ND
2017-03-14A17048737132.6 ppb
2017-06-14A17049829941.0 ppb
2017-06-14A17049830062.8 ppb
2017-06-14A17049830145.6 ppb
2017-06-14A17049830241.4 ppb
2017-06-14A170498303ND
2017-06-14A17049830439.1 ppb
2017-06-14A170498305ND
2017-06-14A17049830646.3 ppb
2017-09-13A17051228854.0 ppb
2017-09-13A17051228956.5 ppb
2017-09-13A17051229055.0 ppb
2017-09-13A17051229148.0 ppb
2017-09-13A1705122928.80 ppb
2017-09-13A17051229353.1 ppb
2017-09-13A170512294ND
2017-09-13A17051229553.6 ppb
2017-12-13A17054831232.0 ppb
2017-12-13A17054831335.7 ppb
2017-12-13A17054831433.5 ppb
2017-12-13A17054831515.7 ppb
2017-12-13A170548316ND
2017-12-13A17054831726.9 ppb
2017-12-13A170548318ND
2017-12-13A17054831934.5 ppb
2018-03-08A18057849235.9 ppb
2018-03-08A18057849331.9 ppb
2018-03-08A18057849430.4 ppb
2018-03-08A180578496ND
2018-03-08A18057849735.7 ppb
2018-03-08A180578498ND
2018-03-08A18057849931.8 ppb
2018-03-27A18057848827.1 ppb
2018-06-12A18060583731.2 ppb
2018-06-12A18060583834.5 ppb
2018-06-12A180605839ND
2018-06-12A18060584043.4 ppb
2018-06-12A180605841ND
2018-06-12A18060584237.5 ppb
2018-06-12A18060584333.8 ppb
2018-06-12A18060584440.2 ppb
2018-09-12A18063199625.3 ppb
2018-09-12A18063199736.7 ppb
2018-09-12A18063199830.9 ppb
2018-09-12A18063207338.9 ppb
2018-09-12A18063207427.3 ppb
2018-09-12A18063207571.9 ppb
2018-09-12A180632076ND
2018-09-12A18063207770.3 ppb
2018-12-128L01753-0135.5 ppb
2018-12-128L01753-0257.4 ppb
2018-12-128L01753-0353.7 ppb
2018-12-128L01753-0426.6 ppb
2018-12-128L01753-05ND
2018-12-128L01753-0645.4 ppb
2018-12-128L01753-07ND
2018-12-128L01753-0849.8 ppb
2019-03-089C01134-01ND
2019-03-089C01134-027.50 ppb
2019-03-089C01134-03ND
2019-03-089C01134-04ND
2019-03-089C01134-0510.9 ppb
2019-03-089C01134-0610.9 ppb
2019-03-089C01134-07ND
2019-03-089C01134-088.10 ppb
2019-06-119F02072-0135.2 ppb
2019-06-119F02072-02ND
2019-06-119F02072-0318.7 ppb
2019-06-119F02072-04ND
2019-06-119F02072-0528.0 ppb
2019-06-119F02072-0632.5 ppb
2019-06-119F02072-0726.0 ppb
2019-06-119F02072-0837.1 ppb
2019-09-109I01993-0144.5 ppb
2019-09-109I01993-0248.8 ppb
2019-09-109I01993-0343.4 ppb
2019-09-109I01993-0431.4 ppb
2019-09-109I01993-057.90 ppb
2019-09-109I01993-0646.6 ppb
2019-09-109I01993-07ND
2019-09-109I01993-0847.8 ppb