Dichlorodifluoromethane
North Castle Water District #1
Dichlorodifluoromethane (Freon-12) is a refrigerant, solvent and aerosol propellant banned in 2000 under the Montreal Protocol because of its ozone-depleting properties. Freons can cause heart, nervous system and liver damage.
14
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 |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | 0.427 ppb | 3 | 1 | ND - 1.28 ppb |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2020-02-26 | AW03946-POCS | ND |
| 2020-02-26 | AW03948-POCS | ND |
| 2020-07-09 | AW13032-POCS | ND |
| 2021-03-03 | AX04222-POCS | ND |
| 2021-03-03 | AX04228-POCS | ND |
| 2021-07-06 | AX13093-POCS | 1.28 ppb |
| 2022-03-01 | AY03614-POCS | ND |
| 2022-03-01 | AY03620-POCS | ND |
| 2022-07-06 | AY11619-POCS | ND |
| 2022-07-18 | AY12379-POC | ND |
| 2022-07-18 | AY12380-POC | ND |
| 2023-03-22 | AZ05100-POCS | ND |
| 2023-03-22 | AZ05098-POCS | ND |
| 2023-07-25 | AZ13471-POCS | ND |