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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Billings

Monochloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

215

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.907 ppb3723ND - 2.50 ppb
20150.719 ppb3618ND - 2.50 ppb
20160.687 ppb3619ND - 1.70 ppb
20170.654 ppb3412ND - 2.50 ppb
20180.828 ppb3619ND - 3.70 ppb
20190.803 ppb3619ND - 2.10 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.. This health guideline protects against system toxicity.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-1010257526002ND
2014-02-1010257526003ND
2014-02-1010257526004ND
2014-02-1010257526006ND
2014-02-1110257526005ND
2014-02-1110257526007ND
2014-02-1210257526001ND
2014-02-1210257526008ND
2014-05-12102671410031.90 ppb
2014-05-12102671410042.50 ppb
2014-05-12102671410062.00 ppb
2014-05-12B14051004-0011.10 ppb
2014-05-12B14051004-001B1.10 ppb
2014-05-13102671410022.30 ppb
2014-05-13102671410052.40 ppb
2014-05-13102671410072.30 ppb
2014-05-14102671410012.50 ppb
2014-05-14102671410081.90 ppb
2014-08-11102774810031.10 ppb
2014-08-11102774810041.000 ppb
2014-08-11B14081054-001END
2014-08-1210277481005ND
2014-08-1210277481006ND
2014-08-12102774810071.000 ppb
2014-08-13102774810011.40 ppb
2014-08-1310277481002ND
2014-08-13102774810081.20 ppb
2014-09-02B14090072-001B0.760 ppb
2014-11-12B14110966-001B0.990 ppb
2014-11-12B14110966-002B1.20 ppb
2014-11-12B14110966-003B0.890 ppb
2014-11-12B14110966-004B1.000 ppb
2014-11-12B14110966-005BND
2014-11-12B14110966-006B1.10 ppb
2014-11-12B14110966-007B1.000 ppb
2014-11-12B14110966-008B0.910 ppb
2014-11-12B14110966-009BND
2015-02-09B15020974-001END
2015-02-09B15020974-002BND
2015-02-09B15020974-003BND
2015-02-09B15020974-004BND
2015-02-10B15020974-005BND
2015-02-10B15020974-006BND
2015-02-10B15020974-007BND
2015-02-11B15020974-008BND
2015-02-11B15020974-009BND
2015-05-11B15051144-003B1.30 ppb
2015-05-11B15051144-004B1.50 ppb
2015-05-11B15051144-006B1.10 ppb
2015-05-11B15051144-009B0.880 ppb
2015-05-12B15051144-002B2.00 ppb
2015-05-12B15051144-005B1.80 ppb
2015-05-12B15051144-007B1.10 ppb
2015-05-13B15051144-001B1.20 ppb
2015-05-13B15051144-008B1.30 ppb
2015-08-10B15080796-002B1.000 ppb
2015-08-10B15080796-004B1.50 ppb
2015-08-10B15080796-005B0.920 ppb
2015-08-10B15080796-006B1.40 ppb
2015-08-10B15080796-007B1.20 ppb
2015-08-10B15080796-008B2.00 ppb
2015-08-10B15080796-009B2.50 ppb
2015-08-10B15080796-010B2.20 ppb
2015-08-11B15080910-001B1.000 ppb
2015-11-09B15110678-001BND
2015-11-09B15110678-002BND
2015-11-09B15110678-003BND
2015-11-09B15110678-004BND
2015-11-09B15110678-005BND
2015-11-09B15110678-006BND
2015-11-09B15110678-007BND
2015-11-09B15110678-008BND
2015-11-09B15110678-009BND
2016-02-08B16020890-001END
2016-02-08B16020890-004BND
2016-02-08B16020890-005BND
2016-02-08B16020890-007BND
2016-02-09B16020890-003BND
2016-02-09B16020890-006BND
2016-02-09B16020890-008BND
2016-02-10B16020890-002BND
2016-02-10B16020890-009BND
2016-05-09B16051069-005B1.50 ppb
2016-05-10B16051069-001B0.760 ppb
2016-05-10B16051069-003B1.60 ppb
2016-05-11B16051069-002B1.50 ppb
2016-05-11B16051069-009B1.60 ppb
2016-05-26B16052073-001BND
2016-05-26B16052073-002B1.20 ppb
2016-05-26B16052073-003B0.770 ppb
2016-05-26B16052073-004BND
2016-08-08B16081057-001B1.20 ppb
2016-08-08B16081057-002B1.40 ppb
2016-08-08B16081057-003B1.70 ppb
2016-08-08B16081057-004B1.70 ppb
2016-08-09B16081057-005BND
2016-08-09B16081057-006BND
2016-08-09B16081057-007B1.30 ppb
2016-08-10B16081057-008B1.60 ppb
2016-08-10B16081057-009B1.30 ppb
2016-11-09B16110820-001BND
2016-11-09B16110820-002B1.20 ppb
2016-11-09B16110820-003BND
2016-11-09B16110820-004BND
2016-11-09B16110820-005B0.910 ppb
2016-11-09B16110820-006BND
2016-11-09B16110820-007B1.50 ppb
2016-11-09B16110820-008B1.10 ppb
2016-11-09B16110820-009B0.880 ppb
2017-02-06B17020497-005BND
2017-02-06B17020497-006B1.10 ppb
2017-02-06B17020497-008BND
2017-02-07B17020497-004B0.800 ppb
2017-02-07B17020497-007B0.820 ppb
2017-02-07B17020497-009BND
2017-02-08B17020497-003BND
2017-02-08B17020497-010BND
2017-05-08B17051019-001E1.80 ppb
2017-05-08B17051019-002B2.20 ppb
2017-05-08B17051019-003B2.00 ppb
2017-05-08B17051019-004B2.10 ppb
2017-05-09B17051019-005B2.50 ppb
2017-05-09B17051019-006B2.00 ppb
2017-05-09B17051019-007B2.40 ppb
2017-05-10B17051019-008B2.20 ppb
2017-05-10B17051019-009B2.30 ppb
2017-08-07B17081099-004BND
2017-08-07B17081099-005BND
2017-08-07B17081099-007BND
2017-08-08B17081099-003BND
2017-08-08B17081099-006BND
2017-08-08B17081099-008BND
2017-08-09B17081099-002BND
2017-08-09B17081099-009BND
2017-11-06B17110842-001BND
2017-11-06B17110842-002BND
2017-11-06B17110842-003BND
2017-11-07B17110842-004BND
2017-11-07B17110842-005BND
2017-11-08B17110842-006BND
2017-11-08B17110842-007BND
2017-11-08B17110842-008BND
2017-11-09B17110842-009BND
2018-02-05B18020545-001H0.770 ppb
2018-02-05B18020545-004B1.000 ppb
2018-02-05B18020545-005B0.830 ppb
2018-02-06B18020545-006B1.30 ppb
2018-02-06B18020545-007B1.30 ppb
2018-02-06B18020545-008B1.30 ppb
2018-02-06B18020545-009B1.000 ppb
2018-02-07B18020545-010B0.950 ppb
2018-02-07B18020545-011B0.940 ppb
2018-05-07B18051134-001H3.70 ppb
2018-05-07B18051134-003B1.40 ppb
2018-05-07B18051134-004B1.60 ppb
2018-05-08B18051134-005B2.10 ppb
2018-05-08B18051134-006B2.00 ppb
2018-05-08B18051134-007B2.00 ppb
2018-05-08B18051134-008B2.10 ppb
2018-05-09B18051134-009B2.20 ppb
2018-05-09B18051134-010B1.60 ppb
2018-05-09B18051134-011B1.70 ppb
2018-08-06B18080949-001HND
2018-08-06B18080949-003BND
2018-08-06B18080949-004BND
2018-08-07B18080949-005BND
2018-08-07B18080949-006BND
2018-08-07B18080949-007BND
2018-08-08B18080949-008BND
2018-08-08B18080949-009BND
2018-08-08B18080949-010BND
2018-11-07B18110767-003BND
2018-11-07B18110767-004BND
2018-11-07B18110767-005BND
2018-11-07B18110767-006BND
2018-11-07B18110767-007BND
2018-11-08B18110767-008BND
2018-11-08B18110767-009BND
2018-11-08B18110767-010BND
2019-02-11B19020608-001HND
2019-02-11B19020608-002BND
2019-02-11B19020608-003BND
2019-02-11B19020608-004BND
2019-02-11B19020608-005BND
2019-02-11B19020608-006BND
2019-02-11B19020608-007BND
2019-02-11B19020608-008BND
2019-02-11B19020608-009BND
2019-05-13B19051523-001B1.40 ppb
2019-05-13B19051523-004B1.60 ppb
2019-05-13B19051523-009B1.70 ppb
2019-05-14B19051523-003B2.00 ppb
2019-05-14B19051523-006B2.10 ppb
2019-05-14B19051523-008B1.70 ppb
2019-05-15B19051523-002B1.80 ppb
2019-05-15B19051523-005B1.80 ppb
2019-05-15B19051523-007B1.90 ppb
2019-08-12B19081432-004B1.30 ppb
2019-08-12B19081432-009B1.50 ppb
2019-08-13B19081432-003B0.890 ppb
2019-08-13B19081432-006B1.10 ppb
2019-08-13B19081432-008B1.10 ppb
2019-08-14B19081432-002B1.60 ppb
2019-08-14B19081432-005B1.80 ppb
2019-08-14B19081432-007B1.50 ppb
2019-08-14B19081432-010A1.20 ppb
2019-11-13B19111116-001BND
2019-11-13B19111116-003B0.920 ppb
2019-11-13B19111116-004BND
2019-11-13B19111116-005BND
2019-11-13B19111116-006BND
2019-11-13B19111116-007BND
2019-11-13B19111116-008BND
2019-11-13B19111116-009BND
2019-11-13B19111116-010BND