Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Haloacetic acids (HAA5)

Deming Municipal 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

 

96

Samples

0

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.386 ppb164ND - 1.76 ppb
20150.275 ppb167ND - 1.10 ppb
20160.266 ppb168ND - 0.870 ppb
20170.514 ppb166ND - 2.30 ppb
20180.0819 ppb162ND - 0.780 ppb
20190.153 ppb163ND - 1.10 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
2014-03-111403523-001B1.58 ppb
2014-03-111403526-001B1.43 ppb
2014-03-111403525-001B1.40 ppb
2014-03-111403524-001B1.76 ppb
2014-05-211405A18-001BND
2014-05-211405A20-001BND
2014-05-211405A19-001BND
2014-05-211405A17-001BND
2014-07-021407229-001BND
2014-07-021407223-001BND
2014-07-021407225-001BND
2014-07-021407227-001BND
2014-10-131410645-001BND
2014-10-131410708-001BND
2014-10-131410640-001BND
2014-10-131410710-001BND
2015-01-271501959-001BND
2015-01-271501958-001BND
2015-01-271501960-001BND
2015-01-271501957-001BND
2015-04-071504354-001BND
2015-04-071504303-001BND
2015-04-071504310-001BND
2015-04-071504304-001BND
2015-07-2120150209600.350 ppb
2015-07-212015020957ND
2015-07-2120150209590.150 ppb
2015-07-2120150209580.710 ppb
2015-10-2020150316980.870 ppb
2015-10-2020150316990.760 ppb
2015-10-2020150317000.460 ppb
2015-10-2020150317011.10 ppb
2016-01-1220160012120.540 ppb
2016-01-1220160012130.450 ppb
2016-01-1220160012110.300 ppb
2016-01-1220160012100.140 ppb
2016-04-0520160097270.540 ppb
2016-04-052016009728ND
2016-04-0520160097300.600 ppb
2016-04-0520160097290.820 ppb
2016-07-122016019987ND
2016-07-122016019986ND
2016-07-122016019985ND
2016-07-122016019984ND
2016-10-2420160309650.870 ppb
2016-10-242016030963ND
2016-10-242016030964ND
2016-10-242016030966ND
2017-01-0320170001551.30 ppb
2017-01-0320170001542.30 ppb
2017-01-0320170001571.80 ppb
2017-01-0320170001561.70 ppb
2017-04-102017010931ND
2017-04-102017010930ND
2017-04-102017010929ND
2017-04-102017010932ND
2017-07-122017020134ND
2017-07-122017020135ND
2017-07-122017020137ND
2017-07-1220170201360.500 ppb
2017-10-0920170290900.620 ppb
2017-10-092017029091ND
2017-10-092017029089ND
2017-10-092017029088ND
2018-01-022018000142ND
2018-01-022018000141ND
2018-01-022018000140ND
2018-01-022018000139ND
2018-04-042018009704ND
2018-04-042018009701ND
2018-04-042018009702ND
2018-04-042018009703ND
2018-07-1020180187360.780 ppb
2018-07-102018018735ND
2018-07-102018018734ND
2018-07-102018018733ND
2018-10-162018029562ND
2018-10-162018029563ND
2018-10-1620180295640.530 ppb
2018-10-162018029565ND
2019-01-0820190005970.820 ppb
2019-01-082019000598ND
2019-01-082019000599ND
2019-01-082019000600ND
2019-04-092019008972ND
2019-04-092019008975ND
2019-04-092019008974ND
2019-04-092019008973ND
2019-07-162019019611ND
2019-07-162019019613ND
2019-07-162019019612ND
2019-07-1620190196101.10 ppb
2019-10-162019030205ND
2019-10-162019030204ND
2019-10-162019030203ND
2019-10-1620190302020.520 ppb