Monochloroacetic acid
Chautauqua Utility District
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 | 0.200 ppb | 6 | 1 | ND - 1.20 ppb |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 8 | 0 | ND |
| 2017 | ND | 8 | 0 | ND |
| 2018 | 2.68 ppb | 8 | 3 | ND - 10.4 ppb |
| 2019 | 0.563 ppb | 8 | 1 | ND - 4.50 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 |
|---|---|---|
| 2014-05-15 | MAY2014 WWTP | ND |
| 2014-05-15 | MAY2014 TURNER B | 1.20 ppb |
| 2014-08-14 | AUG 2014 WWTP | ND |
| 2014-08-14 | AUG 2014 TURNER | ND |
| 2014-11-06 | NOV14 TURNER-CUD | ND |
| 2014-11-06 | NOV14 CUD WWTP | ND |
| 2015-02-19 | FEB15 WWTP-CUD | ND |
| 2015-02-19 | FEB2015 TURNER B | ND |
| 2015-05-28 | MAY2015 TURNER B | ND |
| 2015-05-28 | MAY 2015 WWTP DB | ND |
| 2015-08-20 | AUG15 CUD WWTP | ND |
| 2015-08-20 | AUG15CUD TURNER | ND |
| 2016-02-24 | FEB15 CUD-WWTP | ND |
| 2016-02-24 | FEB16 CUD-TURNER | ND |
| 2016-05-18 | MAY2016 TURNER B | ND |
| 2016-05-18 | MAY16 WWTP CUD | ND |
| 2016-08-03 | AUG16 WASTEWATER | ND |
| 2016-08-03 | AUG16 TURNER BLD | ND |
| 2016-11-16 | NOV16 TURNER BLD | ND |
| 2016-11-16 | NOV16 WWTP | ND |
| 2017-02-15 | FEB17 WWTP CUD | ND |
| 2017-02-15 | FEB2017 TURNER C | ND |
| 2017-05-03 | MAY17 DBPS CUD # | ND |
| 2017-05-03 | MAY17 DBPS CUD | ND |
| 2017-08-02 | 3RDQT17 TURNER B | ND |
| 2017-08-02 | 3RDQT17 WWTP | ND |
| 2017-11-15 | NOV17 DBP TURNER | ND |
| 2017-11-15 | NOV17 WASTERWATE | ND |
| 2018-02-07 | Q1CUD 18 TURNER | ND |
| 2018-02-07 | Q1 CUD 18 WWTP | ND |
| 2018-05-02 | Q2 CUD 18 TURNER | ND |
| 2018-05-02 | Q2 CUD 18 WWTP | ND |
| 2018-08-01 | Q3 CUD 18 TURNER | 6.40 ppb |
| 2018-08-01 | Q3 CUD 18 WWTP | 4.60 ppb |
| 2018-11-20 | Q4 18 TURNER DBP | 10.4 ppb |
| 2018-11-20 | Q4 18 WWTP DBPS | ND |
| 2019-02-20 | Q1 19 WWTP DBPS | ND |
| 2019-02-20 | Q1 19 TURNER DBP | ND |
| 2019-05-01 | Q2 19 WWTP DBPS | 4.50 ppb |
| 2019-05-01 | Q2 19 TURNER DBP | ND |
| 2019-08-07 | Q3 19 WWTP DBPS | ND |
| 2019-08-07 | Q3 19 TURNER DBP | ND |
| 2019-11-06 | Q4 19 TURNER DBP | ND |
| 2019-11-06 | Q4 19 WWTP DBPS | ND |