Chloromethane
North Perry Ave Water District
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.
28
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 | ND | 19 | 0 | ND |
| 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 | 5 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 4 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2013-05-20 | 201305210057AM | ND |
| 2013-05-20 | 201305210148AM | ND |
| 2013-05-20 | 201305210053AM | ND |
| 2013-05-21 | 201305220435AM | ND |
| 2013-05-21 | 201305220456AM | ND |
| 2013-05-21 | 201305220613AM | ND |
| 2013-05-22 | 201305230255AM | ND |
| 2013-05-22 | 201305230310AM | ND |
| 2013-05-22 | 201305230313AM | ND |
| 2013-11-04 | 201311050095AM | ND |
| 2013-11-04 | 201311050093AM | ND |
| 2013-11-05 | 201311060491AM | ND |
| 2013-11-05 | 201311060495AM | ND |
| 2013-11-05 | 201311060493AM | ND |
| 2013-11-06 | 201311070353AM | ND |
| 2013-11-06 | 201311070345AM | ND |
| 2013-11-06 | 201311070361AM | ND |
| 2013-11-06 | 201311070357AM | ND |
| 2013-11-19 | 201311200427AM | ND |
| 2018-07-25 | ND | |
| 2018-07-25 | ND | |
| 2018-07-25 | ND | |
| 2018-07-25 | ND | |
| 2018-07-25 | ND | |
| 2022-08-26 | 4366542 | ND |
| 2022-08-26 | 4366547 | ND |
| 2022-08-26 | 4366550 | ND |
| 2022-08-26 | 4366541 | ND |