Monochloroacetic acid
Grand Island Town Water Department
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 16 | 0 | ND |
| 2015 | 0.524 ppb | 16 | 1 | ND - 8.38 ppb |
| 2016 | 0.200 ppb | 16 | 3 | ND - 1.10 ppb |
| 2017 | 0.770 ppb | 16 | 8 | ND - 2.10 ppb |
| 2018 | 0.839 ppb | 17 | 12 | ND - 2.70 ppb |
| 2019 | 0.757 ppb | 16 | 8 | ND - 7.32 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 |
|---|---|---|
| 2014-02-05 | 140205474 DBP 1S | ND |
| 2014-02-05 | 140205473 DBP1ST | ND |
| 2014-02-05 | 140205471 DBP 1S | ND |
| 2014-02-05 | 14025472 DBP 1ST | ND |
| 2014-05-07 | 14051477-002 | ND |
| 2014-05-07 | 14051477-003 | ND |
| 2014-05-07 | 14051477-001 | ND |
| 2014-05-07 | 14051477-004 | ND |
| 2014-08-21 | 3RD Q 14 DBP LRA | ND |
| 2014-08-21 | 3RD Q 14 DBP LRA | ND |
| 2014-08-21 | DBP 3RD Q 14 LRA | ND |
| 2014-08-21 | 3RD Q 14 DBP LRA | ND |
| 2014-11-05 | 4TH Q 2014 DBP 2 | ND |
| 2014-11-05 | DBP 4TH Q 14 LRA | ND |
| 2014-11-05 | DBP 4TH Q 14 LRA | ND |
| 2014-11-05 | 4TH Q 2014 DBP | ND |
| 2015-02-04 | 04 1ST Q 15 DBP | ND |
| 2015-02-04 | 03 1ST Q 15 DBP | ND |
| 2015-02-04 | 01 1ST Q 15 DBP | 8.38 ppb |
| 2015-02-04 | 02 1ST Q 15 DBP | ND |
| 2015-05-06 | S5E0049-04 | ND |
| 2015-05-06 | S5E0049-01 | ND |
| 2015-05-06 | S5E0049-03 | ND |
| 2015-05-06 | S5E0049-02 | ND |
| 2015-08-05 | 15H1071-2 | ND |
| 2015-08-05 | 15H1071-3 | ND |
| 2015-08-05 | 15H1071-1 | ND |
| 2015-08-05 | 15H1071-4 | ND |
| 2015-11-02 | 15K0389-01 | ND |
| 2015-11-02 | 15K0389-04 | ND |
| 2015-11-02 | 15K0389-02 | ND |
| 2015-11-02 | 15K0389-03 | ND |
| 2016-02-02 | 16B0498-03 | ND |
| 2016-02-02 | 16B0498-04 | 1.000 ppb |
| 2016-02-02 | 16B0498-02 | ND |
| 2016-02-02 | 16B0498-01 | ND |
| 2016-05-03 | 16E0303-03 | ND |
| 2016-05-03 | 16E0303-04 | ND |
| 2016-05-03 | 16E0303-01 | ND |
| 2016-05-03 | 16E0303-02 | ND |
| 2016-08-01 | 16H0350-03 | ND |
| 2016-08-01 | 16H0350-02 | ND |
| 2016-08-01 | 16H0350-04 | 1.10 ppb |
| 2016-08-01 | 16H0350-01 | ND |
| 2016-10-31 | 16K0167-03 | ND |
| 2016-10-31 | 16K0167-04 | 1.10 ppb |
| 2016-10-31 | 16K0167-02 | ND |
| 2016-10-31 | 16K0167-01 | ND |
| 2017-02-06 | 17B0356-03 | 2.00 ppb |
| 2017-02-06 | 17B0356-04 | ND |
| 2017-02-06 | 17B0356-01 | 1.50 ppb |
| 2017-02-06 | 17B0356-02 | 2.10 ppb |
| 2017-05-01 | 17E0298-02 | ND |
| 2017-05-01 | 17E029801 | ND |
| 2017-05-01 | 17E0298-03 | ND |
| 2017-05-01 | 17E0298-04 | ND |
| 2017-07-31 | 17H0208-03 | 1.63 ppb |
| 2017-07-31 | 17H0208-04 | 1.41 ppb |
| 2017-07-31 | 17H0208-01 | ND |
| 2017-07-31 | 17H0208-02 | 1.08 ppb |
| 2017-11-06 | 17K0394-03 | ND |
| 2017-11-06 | 17K0394-01 | 1.30 ppb |
| 2017-11-06 | 17K0394-04 | 1.30 ppb |
| 2017-11-06 | 17K0394-02 | ND |
| 2018-02-05 | 18B0309-01 DBP 1 | 2.70 ppb |
| 2018-02-05 | 18B0309-04 | 1.40 ppb |
| 2018-02-05 | 18B0309-03 | 0.980 ppb |
| 2018-02-05 | 18B0309-02 | 0.650 ppb |
| 2018-02-06 | 18B0309-01 | 2.70 ppb |
| 2018-04-30 | GI 1 DBP 2ND Q 1 | 0.740 ppb |
| 2018-04-30 | GI 2 DBP 2ND Q 1 | 0.610 ppb |
| 2018-04-30 | GI 4 DBP 2ND Q 1 | ND |
| 2018-04-30 | GI 3 DBP 2ND Q 1 | 0.600 ppb |
| 2018-08-06 | GI 2 DBP 3RD Q 1 | ND |
| 2018-08-06 | GI4 DBP 3RD Q 18 | ND |
| 2018-08-06 | GI3 DBP 3RD Q 18 | ND |
| 2018-08-06 | GI DBP 3RD Q 18 | ND |
| 2018-11-05 | GI4 DBP 4TH Q 18 | 0.830 ppb |
| 2018-11-05 | GI1 DBP 4TH Q 18 | 1.10 ppb |
| 2018-11-05 | GI2 DBP 4TH Q 18 | 1.000 ppb |
| 2018-11-05 | GI3 DBP 4TH Q 18 | 0.950 ppb |
| 2019-02-04 | 9020745-04 | 0.530 ppb |
| 2019-02-04 | 9020745-02 | 0.670 ppb |
| 2019-02-04 | 9020745-01 | 0.620 ppb |
| 2019-02-04 | 9020745-03 | 0.570 ppb |
| 2019-05-06 | 9050948-02 | 0.528 ppb |
| 2019-05-06 | 9050948-03 | ND |
| 2019-05-06 | 9050948-01 | 0.823 ppb |
| 2019-05-20 | 9053617-01 | 1.05 ppb |
| 2019-08-05 | 9081262-03 | ND |
| 2019-08-05 | 9081262-02 | 7.32 ppb |
| 2019-08-05 | 9081262-01 | ND |
| 2019-08-05 | 9081262-04 | ND |
| 2019-11-04 | 9110585-04 | ND |
| 2019-11-04 | 9110585-03 | ND |
| 2019-11-04 | 9110585-01 | ND |
| 2019-11-04 | 9110585-02 | ND |