Chloromethane
Sharon Water Supply Corporation
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.
60
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 8 | 0 | ND |
| 2019 | 0.0421 ppb | 14 | 1 | ND - 0.590 ppb |
| 2020 | ND | 10 | 0 | ND |
| 2021 | 0.0560 ppb | 10 | 1 | ND - 0.560 ppb |
| 2022 | 0.0520 ppb | 10 | 1 | ND - 0.520 ppb |
| 2023 | ND | 8 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-03-13 | Q1810062003 | ND |
| 2018-03-13 | Q1810062005 | ND |
| 2018-03-13 | Q1810062007 | ND |
| 2018-03-13 | Q1810062010 | ND |
| 2018-03-13 | Q1810062012 | ND |
| 2018-03-13 | Q1810062014 | ND |
| 2018-03-13 | Q1810062015 | ND |
| 2018-03-13 | Q1810062001 | ND |
| 2019-03-20 | Q1911547004 | ND |
| 2019-03-20 | Q1911547009 | ND |
| 2019-03-20 | Q1911547012 | ND |
| 2019-06-06 | Q1932969010 | ND |
| 2019-06-06 | Q1932969034 | ND |
| 2019-06-06 | Q1932969032 | ND |
| 2019-06-06 | Q1932969012 | 0.590 ppb |
| 2019-06-06 | Q1932969008 | ND |
| 2019-06-06 | Q1932969006 | ND |
| 2019-06-06 | Q1932969004 | ND |
| 2019-08-27 | Q1959747007 | ND |
| 2019-08-27 | Q1959747009 | ND |
| 2019-10-30 | Q1974573005 | ND |
| 2019-10-30 | Q1974573007 | ND |
| 2020-01-21 | Q2002254007 | ND |
| 2020-01-21 | Q2002254009 | ND |
| 2020-01-21 | Q2002254011 | ND |
| 2020-04-08 | Q2014338003 | ND |
| 2020-10-21 | Q2041036029 | ND |
| 2020-10-21 | Q2041036031 | ND |
| 2020-10-21 | Q2041036027 | ND |
| 2020-10-21 | Q2041036018 | ND |
| 2020-10-21 | Q2041036016 | ND |
| 2020-10-21 | Q2041036025 | ND |
| 2021-06-14 | Q2115406002 | ND |
| 2021-11-23 | Q2132764009 | ND |
| 2021-11-23 | Q2132764011 | ND |
| 2021-11-23 | Q2132764013 | ND |
| 2021-11-23 | Q2132764015 | ND |
| 2021-11-23 | Q2132764017 | ND |
| 2021-11-23 | Q2132764019 | 0.560 ppb |
| 2021-11-23 | Q2132764021 | ND |
| 2021-11-23 | Q2132764023 | ND |
| 2021-11-23 | Q2132764027 | ND |
| 2022-03-09 | Q2208229006 | ND |
| 2022-03-09 | Q2208229008 | ND |
| 2022-05-31 | Q2215344001 | ND |
| 2022-10-20 | Q2231930003 | ND |
| 2022-10-20 | Q2231930005 | ND |
| 2022-10-20 | Q2231930007 | ND |
| 2022-10-20 | Q2231930009 | ND |
| 2022-10-20 | Q2231930011 | ND |
| 2022-10-20 | Q2231930013 | 0.520 ppb |
| 2022-10-20 | Q2231930015 | ND |
| 2023-01-11 | Q2301806002 | ND |
| 2023-08-15 | Q2334031004 | ND |
| 2023-08-15 | Q2334031006 | ND |
| 2023-08-15 | Q2334031008 | ND |
| 2023-10-25 | Q2346021008 | ND |
| 2023-10-25 | Q2346021010 | ND |
| 2023-10-25 | Q2346021012 | ND |
| 2023-10-25 | Q2346021014 | ND |