Dichloroacetic acid
Monroe County Water Authority (MCWA)
Dichloroacetic 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.
275
Samples
0
Samples exceeding legal limit (MCL)
210
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 3.66 ppb | 36 | 24 | ND - 20.0 ppb |
| 2015 | 3.14 ppb | 48 | 35 | ND - 12.0 ppb |
| 2016 | 2.40 ppb | 48 | 30 | ND - 13.0 ppb |
| 2017 | 3.14 ppb | 48 | 38 | ND - 15.0 ppb |
| 2018 | 4.73 ppb | 47 | 43 | ND - 13.0 ppb |
| 2019 | 3.97 ppb | 48 | 40 | ND - 11.0 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.2 ppb
The EWG Health Guideline of 0.2 ppb for dichloroacetic 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.a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-05-12 | 418190E | 11.0 ppb |
| 2014-05-12 | 481190F | 9.20 ppb |
| 2014-05-12 | 481190G | 11.0 ppb |
| 2014-05-12 | 481120I | 9.50 ppb |
| 2014-05-12 | 481190H | ND |
| 2014-05-12 | 481190C | 6.90 ppb |
| 2014-05-12 | 481190B | 4.30 ppb |
| 2014-05-12 | 481190L | 20.0 ppb |
| 2014-05-12 | 481210J | 12.0 ppb |
| 2014-05-12 | 481210A | 2.10 ppb |
| 2014-05-12 | 481210K | 5.30 ppb |
| 2014-05-12 | 481190Q | 5.10 ppb |
| 2014-08-12 | 493895-6 | 4.00 ppb |
| 2014-08-12 | 493895-12 | 2.00 ppb |
| 2014-08-12 | 493895-4 | ND |
| 2014-08-12 | 493894-9 | 1.40 ppb |
| 2014-08-12 | 493894-10 | ND |
| 2014-08-12 | 493895-11 | 2.20 ppb |
| 2014-08-12 | 493894-8 | 1.10 ppb |
| 2014-08-12 | 493895-5 | 4.50 ppb |
| 2014-08-12 | 493895-2 | 2.60 ppb |
| 2014-08-12 | 493895-3 | ND |
| 2014-08-12 | 493895-1 | 1.50 ppb |
| 2014-08-12 | 493895-7 | ND |
| 2014-11-11 | 507573-4 | ND |
| 2014-11-11 | 507573-11 | 2.70 ppb |
| 2014-11-11 | 507573-7 | ND |
| 2014-11-11 | 507573-1 | 1.50 ppb |
| 2014-11-11 | 507573-3 | ND |
| 2014-11-11 | 507657-2 | ND |
| 2014-11-11 | 507573-12 | 1.40 ppb |
| 2014-11-11 | 507573-2 | 2.60 ppb |
| 2014-11-11 | 507573-6 | ND |
| 2014-11-11 | 507657-3 | ND |
| 2014-11-11 | 507657-1 | ND |
| 2014-11-11 | 507573-5 | 8.00 ppb |
| 2015-02-10 | 520036-3 | 3.70 ppb |
| 2015-02-10 | 520036-9 | 6.60 ppb |
| 2015-02-10 | 520036-6 | 5.80 ppb |
| 2015-02-10 | 520036-10 | 4.30 ppb |
| 2015-02-10 | 520036-12 | 3.40 ppb |
| 2015-02-10 | 520036-1 | 2.20 ppb |
| 2015-02-10 | 520036-8 | 4.70 ppb |
| 2015-02-10 | 520036-2 | 3.50 ppb |
| 2015-02-10 | 520036-4 | 1.90 ppb |
| 2015-02-10 | 520036-5 | 3.70 ppb |
| 2015-02-10 | 520036-11 | 11.0 ppb |
| 2015-02-10 | 520036-7 | ND |
| 2015-05-11 | 534334B | 4.10 ppb |
| 2015-05-11 | 534279A | 5.80 ppb |
| 2015-05-11 | 534334H | 12.0 ppb |
| 2015-05-11 | 534334E | 10.00 ppb |
| 2015-05-11 | 537279C | 6.40 ppb |
| 2015-05-11 | 534334G | ND |
| 2015-05-11 | 534334C | 6.20 ppb |
| 2015-05-11 | 534334D | ND |
| 2015-05-11 | 534334I | 4.90 ppb |
| 2015-05-11 | 537279B | 4.50 ppb |
| 2015-05-11 | 534334F | 8.60 ppb |
| 2015-05-12 | 534334A | 1.70 ppb |
| 2015-08-11 | 547720E | 3.90 ppb |
| 2015-08-11 | 547827B | ND |
| 2015-08-11 | 547720B | 2.60 ppb |
| 2015-08-11 | 547720H | 1.90 ppb |
| 2015-08-11 | 547720I | 1.90 ppb |
| 2015-08-11 | 547720A | 1.50 ppb |
| 2015-08-11 | 547720C | ND |
| 2015-08-11 | 547 | ND |
| 2015-08-11 | 547720F | 2.90 ppb |
| 2015-08-11 | 547827A | ND |
| 2015-08-11 | 547720D | ND |
| 2015-08-11 | 547720G | ND |
| 2015-11-09 | 5620978A | 3.50 ppb |
| 2015-11-09 | 5620976 | 1.20 ppb |
| 2015-11-09 | 56209711 | 2.10 ppb |
| 2015-11-09 | 5620973 | 1.20 ppb |
| 2015-11-09 | 5620974 | ND |
| 2015-11-09 | 5620979 | 1.20 ppb |
| 2015-11-09 | 5620975 | 4.10 ppb |
| 2015-11-09 | 56209710 | ND |
| 2015-11-09 | 5620972 | 3.80 ppb |
| 2015-11-09 | 5620971 | ND |
| 2015-11-09 | 56209712 | 4.10 ppb |
| 2015-11-09 | 5620977 | ND |
| 2016-02-09 | 201601110087 | 3.30 ppb |
| 2016-02-09 | 201601110090 | 3.90 ppb |
| 2016-02-09 | 201601110095 | 5.00 ppb |
| 2016-02-09 | 201601110079 | 3.60 ppb |
| 2016-02-09 | 201601110084 | 1.40 ppb |
| 2016-02-09 | 201601110088 | 9.10 ppb |
| 2016-02-09 | 201601110091 | 3.40 ppb |
| 2016-02-09 | 201601110099 | ND |
| 2016-02-09 | 201601110086 | 1.10 ppb |
| 2016-02-09 | 201601110097 | 5.00 ppb |
| 2016-02-09 | 201601110094 | 3.50 ppb |
| 2016-02-10 | 201601110100 | ND |
| 2016-05-10 | 201605110365 | 5.90 ppb |
| 2016-05-10 | 201605110377 | 7.10 ppb |
| 2016-05-10 | 201605110367 | 6.80 ppb |
| 2016-05-10 | 201605110373 | 5.30 ppb |
| 2016-05-10 | 201605110363 | ND |
| 2016-05-10 | 201605110370 | ND |
| 2016-05-10 | 201605110362DBP | 13.0 ppb |
| 2016-05-10 | 201605110364 | 4.40 ppb |
| 2016-05-10 | 201605110366 | 5.20 ppb |
| 2016-05-10 | 201605110368 | 1.60 ppb |
| 2016-05-10 | 201605110369 | ND |
| 2016-05-10 | 201605110375` | 8.90 ppb |
| 2016-08-09 | 201608100649 | ND |
| 2016-08-09 | 201608100659 | ND |
| 2016-08-09 | 201608100663 | 1.30 ppb |
| 2016-08-09 | 201608100656 | ND |
| 2016-08-09 | 201508100658 | 1.50 ppb |
| 2016-08-09 | 201608100665 | ND |
| 2016-08-09 | 201608100652 | ND |
| 2016-08-09 | 201608100654 | ND |
| 2016-08-09 | 201608100657 | 1.50 ppb |
| 2016-08-09 | 201608100666 | ND |
| 2016-08-09 | 201608100651 | 2.00 ppb |
| 2016-08-09 | 201608100655 | ND |
| 2016-11-09 | 201611090503 | ND |
| 2016-11-09 | 201611090490 | 1.80 ppb |
| 2016-11-09 | 201611090489 | 1.90 ppb |
| 2016-11-09 | 201611090504 | 1.60 ppb |
| 2016-11-09 | 201611090496 | ND |
| 2016-11-09 | 201611090494 | 1.000 ppb |
| 2016-11-09 | 201611090497 | ND |
| 2016-11-09 | 201611090495 | 1.000 ppb |
| 2016-11-09 | 201611090493 | ND |
| 2016-11-09 | 201611090492 | 1.80 ppb |
| 2016-11-09 | 201611090491 | 2.10 ppb |
| 2016-11-09 | 201611090501 | ND |
| 2017-02-15 | 201702151139 | 1.000 ppb |
| 2017-02-15 | 201702151137 | 3.60 ppb |
| 2017-02-15 | 201702151133 | 10.00 ppb |
| 2017-02-15 | 201702151134 | 3.90 ppb |
| 2017-02-15 | 201702151129 | 1.000 ppb |
| 2017-02-15 | 201702151140 | 1.30 ppb |
| 2017-02-15 | 201702151145 | 3.90 ppb |
| 2017-02-15 | 201702151135 | 2.80 ppb |
| 2017-02-15 | 201702151143 | 3.00 ppb |
| 2017-02-15 | 201702151138 | 6.70 ppb |
| 2017-02-15 | 201702151136 | 2.50 ppb |
| 2017-02-15 | 201702151146 | 3.60 ppb |
| 2017-05-08 | 201705100975 | 1.20 ppb |
| 2017-05-09 | 201705100963 | 8.80 ppb |
| 2017-05-09 | 201705100968 | 15.0 ppb |
| 2017-05-09 | 201705100974 | 2.30 ppb |
| 2017-05-09 | 201705100965 | ND |
| 2017-05-09 | 201705100972 | 7.20 ppb |
| 2017-05-09 | 201705100961 | 4.40 ppb |
| 2017-05-09 | 201705100971 | 7.60 ppb |
| 2017-05-09 | 201705100973 | 7.50 ppb |
| 2017-05-09 | 201705100969 | 2.00 ppb |
| 2017-05-09 | 201705100964 | 7.10 ppb |
| 2017-05-09 | 201705100970 | 8.00 ppb |
| 2017-08-28 | 201708290289 | ND |
| 2017-08-28 | 201708290462 | 1.30 ppb |
| 2017-08-28 | 201708290460 | ND |
| 2017-08-28 | 201708290472 | 3.30 ppb |
| 2017-08-28 | 201708290292 | 2.30 ppb |
| 2017-08-28 | 201708290456 | ND |
| 2017-08-28 | 201708290457 | 1.10 ppb |
| 2017-08-28 | 201708290471 | 2.00 ppb |
| 2017-08-28 | 201708290291 | ND |
| 2017-08-28 | 201708290458 | ND |
| 2017-08-28 | 201708290463 | 2.10 ppb |
| 2017-08-28 | 201708290465 | ND |
| 2017-11-14 | 201711150856 | 3.60 ppb |
| 2017-11-14 | 201711150854 | 2.50 ppb |
| 2017-11-14 | 201711160182 | 1.20 ppb |
| 2017-11-14 | 201711150845 | ND |
| 2017-11-14 | 201711160183 | 1.60 ppb |
| 2017-11-14 | 20171160181 | 2.30 ppb |
| 2017-11-14 | 201711150848 | 3.50 ppb |
| 2017-11-14 | 201711150855 | 5.40 ppb |
| 2017-11-15 | 201711150849 | 1.50 ppb |
| 2017-11-15 | 201711150853 | 2.70 ppb |
| 2017-11-15 | 20711150850 | ND |
| 2017-11-15 | 201711150852 | ND |
| 2018-02-14 | 20180215067 | 5.90 ppb |
| 2018-02-15 | 201802151068 | 6.50 ppb |
| 2018-02-15 | 201802151128 | 1.50 ppb |
| 2018-02-15 | 201802151072 | 6.40 ppb |
| 2018-02-15 | 201802151138 | 4.40 ppb |
| 2018-02-15 | 201802151133 | 5.40 ppb |
| 2018-02-15 | 201802151129 | 9.10 ppb |
| 2018-02-15 | 201802151132 | 13.0 ppb |
| 2018-02-15 | 201802151127 | 2.30 ppb |
| 2018-02-15 | 201802151134 | 5.20 ppb |
| 2018-02-15 | 201802151130 | 10.00 ppb |
| 2018-02-15 | 201802151135 | 5.10 ppb |
| 2018-05-11 | 201805140155 | 12.0 ppb |
| 2018-05-11 | 201805140160 | 6.50 ppb |
| 2018-05-11 | 201805140152 | 2.80 ppb |
| 2018-05-11 | 201805140159 | 6.20 ppb |
| 2018-05-11 | 201805140157 | 8.00 ppb |
| 2018-05-11 | 201805140170 | 8.80 ppb |
| 2018-05-11 | 201805140158 | 8.30 ppb |
| 2018-05-11 | 201805140166 | 8.70 ppb |
| 2018-05-11 | 201805140150 | 2.90 ppb |
| 2018-05-11 | 201805140153 | 11.0 ppb |
| 2018-05-11 | 201805140154 | 10.00 ppb |
| 2018-08-06 | 201808090989 | 13.0 ppb |
| 2018-08-06 | 201808090988 | 1.30 ppb |
| 2018-08-06 | 201808090985 | ND |
| 2018-08-06 | 201808090990 | 1.80 ppb |
| 2018-08-06 | 201808090993 | 1.000 ppb |
| 2018-08-06 | 201808090992 | 5.60 ppb |
| 2018-08-06 | 201808090987 | 2.60 ppb |
| 2018-08-07 | 201808090945 | 1.40 ppb |
| 2018-08-07 | 201808090944 | 2.40 ppb |
| 2018-08-07 | 201808090994 | 3.50 ppb |
| 2018-08-07 | 201808090949 | 1.000 ppb |
| 2018-08-07 | 201808091008 | 2.20 ppb |
| 2018-11-13 | 201811140573 | 1.30 ppb |
| 2018-11-13 | 201811140575 | 4.00 ppb |
| 2018-11-13 | 2018111406330 | ND |
| 2018-11-13 | 201811140571 | 3.80 ppb |
| 2018-11-13 | 201811140628 | 2.30 ppb |
| 2018-11-13 | 201811140576 | 2.60 ppb |
| 2018-11-13 | 201811140570 | ND |
| 2018-11-13 | 201811140574 | ND |
| 2018-11-13 | 201811140627 | 5.80 ppb |
| 2018-11-13 | 201811140569 | 2.40 ppb |
| 2018-11-13 | 201811140624 | 2.50 ppb |
| 2018-11-13 | 201811140572 | 1.80 ppb |
| 2019-02-11 | 201902140215 | ND |
| 2019-02-12 | 201902130389 | 4.00 ppb |
| 2019-02-12 | 201902130388 | 6.40 ppb |
| 2019-02-12 | 201902130390 | 5.20 ppb |
| 2019-02-12 | 201902130387 | 5.00 ppb |
| 2019-02-12 | 201902130385 | 7.80 ppb |
| 2019-02-12 | 201902130382DBP | 1.80 ppb |
| 2019-02-12 | 201902130392 | 5.30 ppb |
| 2019-02-12 | 201902130384 | 7.80 ppb |
| 2019-02-12 | 201902130383 | 2.80 ppb |
| 2019-02-12 | 201902130397 | 6.90 ppb |
| 2019-02-12 | 201902130396 | 8.20 ppb |
| 2019-05-14 | 201905160630 | 3.20 ppb |
| 2019-05-14 | 201905160635 | 10.00 ppb |
| 2019-05-14 | 201905160625DBP | 2.50 ppb |
| 2019-05-14 | 201905160629 | 9.30 ppb |
| 2019-05-14 | 201905160632 | 7.40 ppb |
| 2019-05-14 | 201905160626 | 6.30 ppb |
| 2019-05-14 | 201905160627 | 11.0 ppb |
| 2019-05-14 | 201905160631 | ND |
| 2019-05-14 | 201905160633 | 8.80 ppb |
| 2019-05-14 | 201905160628 | ND |
| 2019-05-14 | 201905160634 | 11.0 ppb |
| 2019-05-14 | 201905160636 | 5.00 ppb |
| 2019-08-12 | 201908150683 | ND |
| 2019-08-13 | 201908140505 | 1.000 ppb |
| 2019-08-13 | 201908140501 | 1.70 ppb |
| 2019-08-13 | 201908140514 | 3.00 ppb |
| 2019-08-13 | 201908140500 | ND |
| 2019-08-13 | 201908140509 | ND |
| 2019-08-13 | 201908140503 | 6.80 ppb |
| 2019-08-13 | 201908140510 | 4.50 ppb |
| 2019-08-13 | 201908140508 | 1.90 ppb |
| 2019-08-13 | 201908140499 | 1.90 ppb |
| 2019-08-13 | 201908140502 | ND |
| 2019-08-13 | 201908140506 | 3.00 ppb |
| 2019-08-13 | 201908140504 | 1.40 ppb |
| 2019-11-12 | 201911130166 | 1.60 ppb |
| 2019-11-12 | 201911130176 | 2.10 ppb |
| 2019-11-12 | 201911130169 | 2.30 ppb |
| 2019-11-12 | 201911130177 | 4.80 ppb |
| 2019-11-12 | 201911130172 | 2.70 ppb |
| 2019-11-12 | 201911130174 | 1.30 ppb |
| 2019-11-12 | 201911130167 | ND |
| 2019-11-12 | 201911130171 | 3.60 ppb |
| 2019-11-12 | 201911130181 | 4.50 ppb |
| 2019-11-12 | 201911130173 | 3.30 ppb |
| 2019-11-12 | 201911130168 | 3.40 ppb |