Dichlorodifluoromethane
The Oaks Water Supply Corporation
NOTE: The Oaks Water Supply Corporation purchases water from San Antonio Water System which is required to test for dichlorodifluoromethane. Sample information shown below was taken by San Antonio Water System.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppb = parts per billion
All test results
NOTE: The Oaks Water Supply Corporation purchases water from San Antonio Water System which is required to test for dichlorodifluoromethane. Sample information shown below was taken by San Antonio Water System.
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-01 | AE16352 | ND |
| 2018-03-01 | AE16364 | ND |
| 2018-03-01 | AE16374 | ND |
| 2018-03-15 | AE18622 | ND |
| 2018-03-26 | AE19940 | ND |
| 2018-03-26 | AE19962 | ND |
| 2018-05-09 | AE25777 | ND |
| 2018-05-10 | AE25963 | ND |
| 2018-06-06 | AE28871 | ND |
| 2018-06-06 | AE28877 | ND |
| 2018-07-02 | AE32261 | ND |
| 2018-07-19 | AE33971 | ND |
| 2018-07-23 | AE34141 | ND |
| 2018-09-26 | AE41718 | ND |
| 2018-09-26 | AE41722 | ND |
| 2018-09-26 | AE41764 | ND |
| 2018-09-26 | AE41770 | ND |
| 2018-09-26 | AE41772 | ND |
| 2018-09-27 | AE41964 | ND |
| 2018-09-27 | AE41976 | ND |
| 2018-09-27 | AE41978 | ND |
| 2018-09-27 | AE42030 | ND |
| 2018-09-27 | AE42032 | ND |
| 2018-09-27 | AE42034 | ND |
| 2018-09-27 | AE42036 | ND |
| 2018-10-05 | AE42822 | ND |
| 2018-11-19 | AE46506 | ND |
| 2018-11-19 | AE46508 | ND |
| 2018-11-19 | AE46510 | ND |
| 2018-11-19 | AE46512 | ND |
| 2018-11-19 | AE46514 | ND |
| 2018-11-19 | AE46516 | ND |
| 2018-11-20 | AE46675 | ND |
| 2018-12-07 | AE48410 | ND |
| 2018-12-07 | AE48412 | ND |
| 2018-12-07 | AE48416 | ND |
| 2018-12-07 | AE48418 | ND |
| 2018-12-07 | AE48420 | ND |
| 2018-12-13 | AE48836 | ND |
| 2018-12-13 | AE48852 | ND |
| 2018-12-13 | AE48854 | ND |
| 2019-01-29 | AE51987 | ND |
| 2019-01-29 | AE51989 | ND |
| 2019-01-30 | AE52202 | ND |
| 2019-01-31 | AE52469 | ND |
| 2019-01-31 | AE52471 | ND |
| 2019-01-31 | AE52473 | ND |
| 2019-03-07 | AE57602 | ND |
| 2019-03-07 | AE57628 | ND |
| 2019-03-28 | AE60466 | ND |
| 2019-03-28 | AE60468 | ND |
| 2019-03-28 | AE60470 | ND |
| 2019-04-23 | AE63398 | ND |
| 2019-04-23 | AE63402 | ND |
| 2019-04-23 | AE63404 | ND |
| 2019-04-25 | AE63728 | ND |
| 2019-05-17 | AE67160 | ND |
| 2019-05-21 | AE67410 | ND |
| 2019-05-21 | AE67412 | ND |
| 2019-05-21 | AE67414 | ND |
| 2019-05-21 | AE67424 | ND |
| 2019-08-13 | AE78339 | ND |
| 2019-08-13 | AE78341 | ND |
| 2019-10-31 | AE88168 | ND |
| 2019-11-13 | AE89133 | ND |
| 2019-11-13 | AE89135 | ND |
| 2019-11-14 | AE89282 | ND |
| 2019-11-14 | AE89286 | ND |
| 2019-11-25 | AE90440 | ND |
| 2019-11-25 | AE90442 | ND |
| 2019-11-25 | AE90444 | ND |
| 2019-11-25 | AE90446 | ND |
| 2019-11-26 | AE90617 | ND |
| 2019-11-26 | AE90619 | ND |
| 2019-12-10 | AE91921 | ND |
| 2019-12-10 | AE91923 | ND |
| 2019-12-10 | AE91925 | ND |
| 2019-12-10 | AE91927 | ND |
| 2019-12-11 | AE92160 | ND |
| 2019-12-11 | AE92162 | ND |
| 2020-02-19 | AE99006 | ND |
| 2020-03-26 | AF04718 | ND |
| 2020-03-26 | AF04730 | ND |
| 2020-03-26 | AF04732 | ND |
| 2020-03-30 | AF04891 | ND |
| 2020-03-30 | AF04893 | ND |
| 2020-03-30 | AF04907 | ND |
| 2020-03-31 | AF05078 | ND |
| 2020-03-31 | AF05080 | ND |
| 2020-03-31 | AF05082 | ND |
| 2020-05-05 | AF09356 | ND |
| 2020-05-18 | AF11652 | ND |
| 2020-06-15 | AF15350 | ND |
| 2020-06-15 | AF15352 | ND |
| 2020-07-21 | AF20464 | ND |
| 2020-07-21 | AF20466 | ND |
| 2020-08-03 | AF21856 | ND |
| 2020-08-03 | AF21858 | ND |
| 2020-10-05 | AF29509 | ND |
| 2020-10-05 | AF29511 | ND |
| 2020-10-05 | AF29513 | ND |
| 2020-10-05 | AF29515 | ND |
| 2020-10-07 | AF29839 | ND |
| 2020-10-07 | AF29841 | ND |
| 2020-10-29 | AF32636 | ND |
| 2020-10-29 | AF32670 | ND |
| 2020-10-29 | AF32672 | ND |
| 2020-10-29 | AF32678 | ND |
| 2020-10-29 | AF32680 | ND |
| 2020-11-11 | AF34093 | ND |
| 2020-11-11 | AF34095 | ND |
| 2020-11-11 | AF34097 | ND |
| 2020-11-11 | AF34099 | ND |
| 2020-11-12 | AF34411 | ND |
| 2020-11-16 | AF34609 | ND |
| 2020-11-16 | AF34611 | ND |
| 2020-11-16 | AF34613 | ND |
| 2020-11-17 | AF34903 | ND |
| 2020-11-17 | AF34905 | ND |
| 2020-11-17 | AF34907 | ND |
| 2020-11-18 | AF35121 | ND |
| 2020-11-18 | AF35123 | ND |
| 2020-11-18 | AF35125 | ND |
| 2020-12-15 | AF37677 | ND |
| 2020-12-15 | AF37679 | ND |
| 2020-12-18 | AF38170 | ND |
| 2021-01-13 | AF39196 | ND |
| 2021-01-26 | AF41111 | ND |
| 2021-01-26 | AF41113 | ND |
| 2021-01-26 | AF41119 | ND |
| 2021-01-26 | AF41121 | ND |
| 2021-01-26 | AF41123 | ND |
| 2021-03-03 | AF45135 | ND |
| 2021-03-03 | AF45137 | ND |
| 2021-03-03 | AF45139 | ND |
| 2021-03-05 | AF46066 | ND |
| 2021-03-05 | AF46068 | ND |
| 2021-03-05 | AF46078 | ND |
| 2021-03-05 | AF46080 | ND |
| 2021-03-05 | AF46084 | ND |
| 2021-05-11 | AF53244 | ND |
| 2021-05-11 | AF53246 | ND |
| 2021-05-11 | AF53248 | ND |
| 2021-05-11 | AF53250 | ND |
| 2021-05-11 | AF53266 | ND |
| 2021-05-20 | AF54861 | ND |
| 2021-06-14 | AF57780 | ND |
| 2021-06-14 | AF57782 | ND |
| 2021-06-14 | AF57784 | ND |
| 2021-07-13 | AF61664 | ND |
| 2021-07-13 | AF61666 | ND |
| 2021-07-13 | AF61722 | ND |
| 2021-07-13 | AF61726 | ND |
| 2021-07-13 | AF61728 | ND |
| 2021-08-04 | AF64829 | ND |
| 2021-08-05 | AF65061 | ND |
| 2021-09-28 | AF71410 | ND |
| 2021-10-05 | AF72301 | ND |
| 2021-11-29 | AF77368 | ND |
| 2021-11-29 | AF77370 | ND |
| 2021-11-29 | AF77372 | ND |
| 2021-11-29 | AF77376 | ND |
| 2021-11-30 | AF77526 | ND |
| 2021-11-30 | AF77528 | ND |
| 2021-11-30 | AF77530 | ND |
| 2021-11-30 | AF77532 | ND |
| 2021-11-30 | AF77534 | ND |
| 2021-11-30 | AF77536 | ND |
| 2021-11-30 | AF77538 | ND |
| 2021-12-01 | AF77678 | ND |
| 2021-12-01 | AF77680 | ND |
| 2021-12-01 | AF77684 | ND |
| 2021-12-01 | AF77686 | ND |
| 2021-12-17 | AF79089 | ND |
| 2022-01-11 | AF79695 | ND |
| 2022-01-11 | AF79703 | ND |
| 2022-01-13 | AF80246 | ND |
| 2022-01-13 | AF80248 | ND |
| 2022-04-14 | AF93370 | ND |
| 2022-04-14 | AF93372 | ND |
| 2022-06-27 | AG02404 | ND |
| 2022-06-27 | AG02406 | ND |
| 2022-06-27 | AG02408 | ND |
| 2022-06-27 | AG02410 | ND |
| 2022-06-27 | AG02412 | ND |
| 2022-07-06 | AG03461 | ND |
| 2022-08-04 | AG07913 | ND |
| 2022-10-24 | AG18062 | ND |
| 2022-10-24 | AG18064 | ND |
| 2022-10-24 | AG18066 | ND |
| 2022-10-24 | AG18074 | ND |
| 2022-10-24 | AG18076 | ND |
| 2022-10-24 | AG18094 | ND |
| 2022-10-24 | AG18096 | ND |
| 2022-10-25 | AG18347 | ND |
| 2022-10-25 | AG18349 | ND |
| 2022-10-25 | AG18351 | ND |
| 2022-10-25 | AG18353 | ND |
| 2022-12-05 | AG20696 | ND |
| 2022-12-05 | AG20700 | ND |
| 2022-12-05 | AG20706 | ND |
| 2022-12-05 | AG20708 | ND |
| 2022-12-05 | AG20710 | ND |
| 2022-12-05 | AG20712 | ND |
| 2022-12-05 | AG20714 | ND |
| 2022-12-05 | AG20716 | ND |
| 2022-12-05 | AG20718 | ND |
| 2022-12-07 | AG21117 | ND |
| 2022-12-07 | AG21121 | ND |
| 2022-12-07 | AG21123 | ND |
| 2022-12-07 | AG21125 | ND |
| 2022-12-07 | AG21127 | ND |
| 2022-12-07 | AG21129 | ND |
| 2022-12-07 | AG21133 | ND |
| 2023-02-22 | AG29986 | ND |
| 2023-02-22 | AG29988 | ND |
| 2023-04-05 | AG35639 | ND |
| 2023-05-08 | AG39576 | ND |
| 2023-06-27 | AG46183 | ND |
| 2023-07-11 | AG47876 | ND |
| 2023-07-12 | AG48176 | ND |
| 2023-08-14 | AG52406 | ND |
| 2023-10-04 | AG58428 | ND |
| 2023-10-31 | AG61756 | ND |
| 2023-10-31 | AG61758 | ND |
| 2023-10-31 | AG61760 | ND |
| 2023-10-31 | AG61762 | ND |
| 2023-10-31 | AG61764 | ND |
| 2023-10-31 | AG61766 | ND |
| 2023-11-01 | AG62019 | ND |
| 2023-11-01 | AG62021 | ND |
| 2023-11-01 | AG62023 | ND |
| 2023-11-01 | AG62025 | ND |
| 2023-11-01 | AG62027 | ND |
| 2023-11-01 | AG62029 | ND |
| 2023-11-14 | AG63560 | ND |
| 2023-11-14 | AG63562 | ND |
| 2023-11-15 | AG63770 | ND |
| 2023-11-15 | AG63772 | ND |
| 2023-11-15 | AG63774 | ND |
| 2023-11-15 | AG63778 | ND |
| 2023-11-15 | AG63780 | ND |
| 2023-11-15 | AG63782 | ND |
| 2023-11-15 | AG63784 | ND |
| 2023-11-15 | AG63786 | ND |
| 2023-11-15 | AG63788 | ND |
| 2023-11-15 | AG63790 | ND |
| 2023-11-16 | AG64000 | ND |
| 2023-12-18 | AG66826 | ND |
| 2023-12-18 | AG66828 | ND |
| 2023-12-18 | AG66830 | ND |
| 2023-12-18 | AG66832 | ND |
| 2023-12-18 | AG66834 | ND |
| 2023-12-18 | AG66836 | ND |
| 2023-12-19 | AG67028 | ND |
| 2023-12-19 | AG67034 | ND |