Dichlorodifluoromethane
Altoona Waterworks
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.
24
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 | 1.75 ppb | 4 | 4 | 1.10 ppb - 2.20 ppb |
| 2019 | 0.823 ppb | 4 | 4 | 0.280 ppb - 1.70 ppb |
| 2020 | 1.13 ppb | 3 | 3 | 1.000 ppb - 1.20 ppb |
| 2021 | 0.930 ppb | 4 | 4 | 0.860 ppb - 1.000 ppb |
| 2022 | 1.48 ppb | 4 | 4 | 0.920 ppb - 2.50 ppb |
| 2023 | 0.724 ppb | 5 | 3 | ND - 1.50 ppb |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-12 | 1044559 | 2.20 ppb |
| 2018-06-19 | 1062457 | 2.20 ppb |
| 2018-09-18 | 1081371 | 1.10 ppb |
| 2018-12-17 | 1097851 | 1.50 ppb |
| 2019-03-11 | 1108740 | 0.470 ppb |
| 2019-06-18 | 1128844 | 1.70 ppb |
| 2019-09-16 | 1148215 | 0.840 ppb |
| 2019-12-09 | 1164494 | 0.280 ppb |
| 2020-06-16 | 1193784 | 1.20 ppb |
| 2020-09-15 | 1214813 | 1.20 ppb |
| 2020-12-15 | 1232451 | 1.000 ppb |
| 2021-03-15 | 1243823 | 0.860 ppb |
| 2021-03-15 | 1243823 | 0.860 ppb |
| 2021-06-15 | 1259378 | 1.000 ppb |
| 2021-11-08 | 1288394 | 1.000 ppb |
| 2022-01-19 | 1296685 | 0.920 ppb |
| 2022-05-03 | 1311124 | 1.10 ppb |
| 2022-09-21 | 1338361 | 2.50 ppb |
| 2022-10-20 | 1345196 | 1.40 ppb |
| 2023-01-25 | CB00795-02 | ND |
| 2023-01-26 | CB00861-02 | ND |
| 2023-02-08 | CB01247-01 | 0.920 ppb |
| 2023-06-12 | CB06321-09 | 1.20 ppb |
| 2023-11-07 | CB13662-01 | 1.50 ppb |