Chloromethane
Connecticut Water Company - Rivercrest Division
Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.
22
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | 0.400 ppb | 4 | 1 | ND - 1.60 ppb |
| 2016 | ND | 4 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 2.69 ppb
The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-09-12 | BH12772VOC1 | ND |
| 2015-03-10 | BH80778VOC1 | ND |
| 2015-04-20 | BJ04751VOC1 | ND |
| 2015-07-21 | BJ60768VOC1 | 1.60 ppb |
| 2015-10-19 | BK10221VOC1 | ND |
| 2016-01-25 | BK57083VOC1 | ND |
| 2016-04-12 | BN12252VOC1 | ND |
| 2016-07-18 | BN74931VOC1 | ND |
| 2016-12-15 | BX05957VOC1 | ND |
| 2017-03-28 | BX94504VOC1 | ND |
| 2017-05-09 | BY16995VOC1 | ND |
| 2017-09-14 | BZ01499VOC1 | ND |
| 2017-11-06 | BZ32816VOC1 | ND |
| 2018-02-12 | BZ87734VOC1 | ND |
| 2018-04-20 | CA23365VOC1 | ND |
| 2018-07-24 | CA96252 | ND |
| 2018-11-14 | VOC1 200512680 | ND |
| 2019-01-23 | VOC1 200519507 | ND |
| 2019-05-06 | VOC1 200530730 | ND |
| 2019-08-07 | VOC1 200543769 | ND |
| 2019-10-21 | VOC1 200553611 | ND |
| 2019-11-06 | VOC1 200555561 | ND |