Trichlorofluoromethane
Yuima Municipal Water District Ida
Trichlorofluoromethane (Freon 11) 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.
34
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 | 29.2 ppb | 5 | 4 | ND - 63.0 ppb |
| 2019 | 54.0 ppb | 4 | 4 | 31.0 ppb - 89.0 ppb |
| 2020 | 41.6 ppb | 7 | 5 | ND - 110.0 ppb |
| 2021 | 60.7 ppb | 5 | 5 | 5.40 ppb - 100.0 ppb |
| 2022 | 73.7 ppb | 3 | 3 | 54.0 ppb - 96.0 ppb |
| 2023 | 20.9 ppb | 10 | 3 | ND - 95.0 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 1,300 ppb
The EWG Health Guideline of 1,300 ppb for trichlorofluoromethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-09 | CA3700938_012_012-201801090920 | 63.0 ppb |
| 2018-04-10 | CA3700938_012_012-201804100800 | 39.0 ppb |
| 2018-07-10 | CA3700938_005_005-201807100830 | ND |
| 2018-07-10 | CA3700938_012_012-201807100800 | 20.0 ppb |
| 2018-10-09 | CA3700938_012_012-201810091105 | 24.0 ppb |
| 2019-01-08 | CA3700938_012_012-201901080815 | 89.0 ppb |
| 2019-04-09 | CA3700938_012_012-201904091125 | 48.0 ppb |
| 2019-07-09 | CA3700938_012_012-201907090845 | 31.0 ppb |
| 2019-10-08 | CA3700938_012_012-201910080900 | 48.0 ppb |
| 2020-01-14 | CA3700938_012_012-202001141007 | 110.0 ppb |
| 2020-04-14 | CA3700938_012_012-202004140830 | 96.0 ppb |
| 2020-07-14 | CA3700938_012_012-202007141110 | 35.0 ppb |
| 2020-07-14 | CA3700938_006_006-202007141010 | 13.0 ppb |
| 2020-07-14 | CA3700938_031_031-202007141035 | ND |
| 2020-07-14 | CA3700938_048_048-202007141207 | ND |
| 2020-10-13 | CA3700938_012_012-202010131000 | 37.0 ppb |
| 2021-01-12 | CA3700938_012_012-202101120915 | 82.0 ppb |
| 2021-04-13 | CA3700938_012_012-202104131230 | 72.0 ppb |
| 2021-07-13 | CA3700938_012_012-202107130825 | 44.0 ppb |
| 2021-07-13 | CA3700938_005_005-202107130930 | 5.40 ppb |
| 2021-10-18 | CA3700938_012_012-202110181100 | 100.0 ppb |
| 2022-01-10 | CA3700938_012_012-202201100800 | 96.0 ppb |
| 2022-04-04 | CA3700938_012_012-202204041200 | 71.0 ppb |
| 2022-10-12 | CA3700938_012_012-202210120845 | 54.0 ppb |
| 2023-02-13 | CA3700938_012_012-202302131315 | 95.0 ppb |
| 2023-05-01 | CA3700938_037_037-202305011010 | ND |
| 2023-07-11 | CA3700938_011_011-202307110900 | ND |
| 2023-07-11 | CA3700938_020_020-202307110750 | ND |
| 2023-07-11 | CA3700938_047_047-202307110840 | ND |
| 2023-07-11 | CA3700938_006_006-202307110750 | 30.0 ppb |
| 2023-07-11 | CA3700938_012_012-202307110915 | 84.0 ppb |
| 2023-07-11 | CA3700938_031_031-202307110730 | ND |
| 2023-07-11 | CA3700938_004_004-202307110730 | ND |
| 2023-10-02 | CA3700938_048_048-202310020840 | ND |