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EWG's Tap Water Database — 2021 UPDATE

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Haloacetic acids (HAA5)

City of Buena Park

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

 

192

Samples

0

Samples exceeding legal limit (MCL)

78

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20143.12 ppb247ND - 15.5 ppb
20154.70 ppb3220ND - 17.5 ppb
20160.797 ppb325ND - 8.80 ppb
20173.93 ppb3215ND - 12.2 ppb
20181.70 ppb4018ND - 7.30 ppb
20191.99 ppb3213ND - 7.50 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
2014-02-143761-801-12188.20 ppb
2014-02-143761-802-12338.60 ppb
2014-02-143761-803-1150ND
2014-02-143761-804-1203ND
2014-02-143761-805-1140ND
2014-02-143761-806-11291.000 ppb
2014-02-143761-807-1113ND
2014-02-143761-808-1053ND
2014-05-163761-801-142915.5 ppb
2014-05-163761-802-141414.7 ppb
2014-05-163761-803-1355ND
2014-05-163761-804-1403ND
2014-05-163761-805-1346ND
2014-05-163761-806-1325ND
2014-05-163761-807-1336ND
2014-05-163761-808-1254ND
2014-08-153761-801-113014.0 ppb
2014-08-153761-802-114212.8 ppb
2014-08-153761-803-1005ND
2014-08-153761-804-1030ND
2014-08-153761-805-1041ND
2014-08-153761-806-1052ND
2014-08-153761-807-1103ND
2014-08-153761-808-1157ND
2015-02-123761-801-10109.70 ppb
2015-02-123761-802-095510.5 ppb
2015-02-123761-803-09318.60 ppb
2015-02-123761-804-09438.20 ppb
2015-02-123761-805-092110.8 ppb
2015-02-123761-806-090010.6 ppb
2015-02-123761-807-091010.9 ppb
2015-02-123761-808-1025ND
2015-05-113761-801-132014.3 ppb
2015-05-113761-802-131217.5 ppb
2015-05-113761-803-11302.90 ppb
2015-05-113761-804-11403.10 ppb
2015-05-113761-805-11062.90 ppb
2015-05-113761-806-1055ND
2015-05-113761-807-1045ND
2015-05-113761-808-1010ND
2015-08-103761-801-130013.6 ppb
2015-08-103761-802-124013.1 ppb
2015-08-103761-803-11102.70 ppb
2015-08-103761-804-11002.80 ppb
2015-08-103761-805-1030ND
2015-08-103761-806-1015ND
2015-08-103761-807-10001.70 ppb
2015-08-103761-808-0942ND
2015-11-093761-801-12152.50 ppb
2015-11-093761-802-10442.10 ppb
2015-11-093761-803-10202.00 ppb
2015-11-093761-804-1100ND
2015-11-093761-805-0958ND
2015-11-093761-806-0948ND
2015-11-093761-807-0930ND
2015-11-093761-808-0910ND
2016-02-083761-801-10508.80 ppb
2016-02-083761-802-1033ND
2016-02-083761-803-0942ND
2016-02-083761-804-0955ND
2016-02-083761-805-0936ND
2016-02-083761-806-0915ND
2016-02-083761-807-0925ND
2016-02-083761-808-0840ND
2016-05-093761-801-1310ND
2016-05-093761-802-1209ND
2016-05-093761-803-1125ND
2016-05-093761-804-1148ND
2016-05-093761-805-1121ND
2016-05-093761-806-1055ND
2016-05-093761-807-1135ND
2016-05-093761-808-10532.30 ppb
2016-08-083761-801-1140ND
2016-08-083761-802-1202ND
2016-08-083761-803-1138ND
2016-08-083761-804-1110ND
2016-08-083761-805-1116ND
2016-08-083761-806-1110ND
2016-08-083761-807-10351.000 ppb
2016-08-083761-808-1005ND
2016-11-143761-801-15225.90 ppb
2016-11-143761-802-15477.50 ppb
2016-11-143761-803-1423ND
2016-11-143761-804-1139ND
2016-11-143761-805-1454ND
2016-11-143761-806-1442ND
2016-11-143761-807-1207ND
2016-11-143761-808-1221ND
2017-02-133761-801-15147.80 ppb
2017-02-133761-802-15058.40 ppb
2017-02-133761-803-13369.20 ppb
2017-02-133761-804-13437.50 ppb
2017-02-133761-805-13248.60 ppb
2017-02-133761-806-15379.10 ppb
2017-02-133761-807-14239.50 ppb
2017-02-133761-808-14096.80 ppb
2017-05-123761-801-11348.90 ppb
2017-05-123761-802-11249.50 ppb
2017-05-123761-803-1047ND
2017-05-123761-804-1059ND
2017-05-123761-805-1037ND
2017-05-123761-806-1111ND
2017-05-123761-807-1029ND
2017-05-123761-808-1007ND
2017-08-183761-801-11457.60 ppb
2017-08-183761-802-11357.90 ppb
2017-08-183761-803-1025ND
2017-08-183761-804-1040ND
2017-08-183761-805-1014ND
2017-08-183761-806-11275.40 ppb
2017-08-183761-807-1002ND
2017-08-183761-808-1059ND
2017-11-173761-801-113012.2 ppb
2017-11-173761-802-11457.40 ppb
2017-11-173761-803-1100ND
2017-11-173761-804-1110ND
2017-11-173761-805-1039ND
2017-11-173761-806-1030ND
2017-11-173761-807-1049ND
2017-11-173761-808-1010ND
2018-02-093761-801-14005.20 ppb
2018-02-093761-802-12305.80 ppb
2018-02-093761-803-1248ND
2018-02-093761-804-1300ND
2018-02-093761-805-13111.80 ppb
2018-02-093761-806-13201.60 ppb
2018-02-093761-807-13301.20 ppb
2018-02-093761-808-1342ND
2018-05-183761-801-15005.80 ppb
2018-05-183761-802-14444.10 ppb
2018-05-183761-803-14271.20 ppb
2018-05-183761-804-14171.40 ppb
2018-05-183761-805-1407ND
2018-05-183761-806-1356ND
2018-05-183761-807-1345ND
2018-05-183761-808-1330ND
2018-06-223761-801-11227.30 ppb
2018-06-223761-802-11136.10 ppb
2018-06-223761-803-1057ND
2018-06-223761-804-1105ND
2018-06-223761-805-1023ND
2018-06-223761-806-1005ND
2018-06-223761-807-1014ND
2018-06-223761-808-1034ND
2018-08-173761-801-14425.10 ppb
2018-08-173761-802-13575.30 ppb
2018-08-173761-803-1328ND
2018-08-173761-804-1340ND
2018-08-173761-805-1317ND
2018-08-173761-806-1306ND
2018-08-173761-807-12551.000 ppb
2018-08-173761-808-1232ND
2018-11-163761-801-12006.70 ppb
2018-11-163761-802-11386.00 ppb
2018-11-163761-803-13171.000 ppb
2018-11-163761-804-1127ND
2018-11-163761-805-1107ND
2018-11-163761-806-1056ND
2018-11-163761-807-10471.40 ppb
2018-11-163761-808-1033ND
2019-02-153761-801-12316.10 ppb
2019-02-153761-802-12456.90 ppb
2019-02-153761-803-1215ND
2019-02-153761-804-1204ND
2019-02-153761-805-1155ND
2019-02-153761-806-1143ND
2019-02-153761-807-1130ND
2019-02-153761-808-1114ND
2019-05-153761-801-11156.10 ppb
2019-05-153761-802-11065.90 ppb
2019-05-153761-803-1029ND
2019-05-153761-804-1057ND
2019-05-153761-805-1018ND
2019-05-153761-806-0958ND
2019-05-153761-807-10112.30 ppb
2019-05-153761-808-10446.40 ppb
2019-08-163761-801-11192.10 ppb
2019-08-163761-802-11072.40 ppb
2019-08-163761-803-10485.20 ppb
2019-08-163761-804-1037ND
2019-08-163761-805-1026ND
2019-08-163761-806-10151.000 ppb
2019-08-163761-807-1002ND
2019-08-163761-808-09474.40 ppb
2019-11-153761-801-11567.50 ppb
2019-11-153761-802-11377.50 ppb
2019-11-153761-803-1118ND
2019-11-153761-804-1107ND
2019-11-153761-805-1054ND
2019-11-153761-806-1042ND
2019-11-153761-807-1028ND
2019-11-153761-808-1002ND