Dichlorofluoromethane
Saint Louis Park
Dichlorofluoromethane (Freon-21) 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.
51
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 | 0.671 ppb | 7 | 4 | ND - 1.30 ppb |
| 2015 | 1.18 ppb | 4 | 4 | 1.10 ppb - 1.40 ppb |
| 2016 | 0.627 ppb | 16 | 11 | ND - 1.20 ppb |
| 2017 | ND | 13 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-03-19 | 14C0829-02 | ND |
| 2014-03-19 | 14C0829-01 | 1.10 ppb |
| 2014-05-29 | 14E3054-02 | ND |
| 2014-05-29 | 14E3056-01 | ND |
| 2014-05-29 | 14E3054-01 | 1.10 ppb |
| 2014-08-26 | 14H2350-01 | 1.20 ppb |
| 2014-12-17 | 14L0719-01 | 1.30 ppb |
| 2015-03-30 | 15C1168-01 | 1.10 ppb |
| 2015-06-10 | 15F0705-01 | 1.10 ppb |
| 2015-09-24 | 15I1305-01 | 1.10 ppb |
| 2015-11-19 | 15K1031-01 | 1.40 ppb |
| 2016-01-14 | 16A0522-01 | 1.10 ppb |
| 2016-01-14 | 16A0523-01 | 1.20 ppb |
| 2016-01-14 | 16A0523-02 | 0.520 ppb |
| 2016-02-17 | 16B0917-01 | 1.10 ppb |
| 2016-02-17 | 16B0917-04 | ND |
| 2016-02-17 | 16B0917-03 | ND |
| 2016-02-17 | 16B0917-02 | ND |
| 2016-06-01 | 16F0030-01 | 1.20 ppb |
| 2016-06-01 | 16F0032-01 | 0.600 ppb |
| 2016-08-25 | 16H2589-01 | 1.10 ppb |
| 2016-08-25 | 16H2590-01 | ND |
| 2016-08-25 | 16H2593-01 | 0.520 ppb |
| 2016-11-08 | 16K0369-01 | ND |
| 2016-11-08 | 16K0370-01 | 0.950 ppb |
| 2016-12-05 | 16L0214-01 | 0.810 ppb |
| 2016-12-05 | 16L0214-02 | 0.930 ppb |
| 2017-01-05 | 17A0039-01 | ND |
| 2017-01-05 | 17A0039-02 | ND |
| 2017-01-05 | 17A0040-01 | ND |
| 2017-04-11 | 17D0599-01 | ND |
| 2017-08-01 | 17H0064-01 | ND |
| 2017-08-01 | 17H0064-02 | ND |
| 2017-08-01 | 17H0064-03 | ND |
| 2017-11-01 | 17K0062-01 | ND |
| 2017-11-01 | 17K0062-02 | ND |
| 2017-11-01 | 17K0061-01 | ND |
| 2017-11-01 | 17K0060-01 | ND |
| 2017-11-01 | 17K0059-04 | ND |
| 2017-11-01 | 17K0059-01 | ND |
| 2018-01-19 | 18A0639-01 | ND |
| 2018-04-10 | 18D0389-01 | ND |
| 2018-07-12 | 18G0516-01 | ND |
| 2018-07-12 | 18G0518-01 | ND |
| 2018-10-17 | 18J0842-01 | ND |
| 2019-02-13 | 19B0557-01 | ND |
| 2019-05-16 | 19E1269-01 | ND |
| 2019-05-16 | 19E1270-01 | ND |
| 2019-05-21 | 19E1637-01 | ND |
| 2019-08-07 | 19H0616-01 | ND |
| 2019-10-29 | 19J1574-01 | ND |