Dichlorodifluoromethane
Sunbelt Fresh Water Supply District Woodland Oaks Subdivision
NOTE: Sunbelt Fresh Water Supply District Woodland Oaks Subdivision purchases water from City of Houston which is required to test for dichlorodifluoromethane. Sample information shown below was taken by City of Houston.
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 | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
NOTE: Sunbelt Fresh Water Supply District Woodland Oaks Subdivision purchases water from City of Houston which is required to test for dichlorodifluoromethane. Sample information shown below was taken by City of Houston.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-18 | AE09263 | ND |
| 2018-01-18 | AE09267 | ND |
| 2018-01-18 | AE09269 | ND |
| 2018-01-23 | AE09882 | ND |
| 2018-01-23 | AE09888 | ND |
| 2018-01-23 | AE09890 | ND |
| 2018-01-23 | AE09892 | ND |
| 2018-03-29 | AE20614 | ND |
| 2018-03-29 | AE20616 | ND |
| 2018-03-29 | AE20620 | ND |
| 2018-03-29 | AE20626 | ND |
| 2018-03-29 | AE20660 | ND |
| 2018-03-29 | AE20668 | ND |
| 2018-04-26 | AE24160 | ND |
| 2018-04-26 | AE24170 | ND |
| 2018-04-26 | AE24174 | ND |
| 2018-04-26 | AE24176 | ND |
| 2018-04-26 | AE24178 | ND |
| 2018-04-26 | AE24184 | ND |
| 2018-05-22 | AE27246 | ND |
| 2018-05-22 | AE27250 | ND |
| 2018-05-22 | AE27262 | ND |
| 2018-05-22 | AE27268 | ND |
| 2018-07-19 | AE33947 | ND |
| 2018-07-19 | AE33949 | ND |
| 2018-07-19 | AE33951 | ND |
| 2018-07-19 | AE33953 | ND |
| 2018-07-19 | AE33955 | ND |
| 2018-07-19 | AE33975 | ND |
| 2018-08-03 | AE35862 | ND |
| 2018-08-03 | AE35866 | ND |
| 2018-08-15 | AE37200 | ND |
| 2018-08-15 | AE37202 | ND |
| 2018-08-15 | AE37214 | ND |
| 2018-08-15 | AE37218 | ND |
| 2018-08-28 | AE38811 | ND |
| 2018-09-26 | AE41758 | ND |
| 2018-09-26 | AE41760 | ND |
| 2018-09-26 | AE41766 | ND |
| 2018-09-26 | AE41768 | ND |
| 2018-11-14 | AE46111 | ND |
| 2019-01-16 | AE50170 | ND |
| 2019-03-06 | AE57359 | ND |
| 2019-03-06 | AE57361 | ND |
| 2019-03-06 | AE57363 | ND |
| 2019-03-06 | AE57365 | ND |
| 2019-03-06 | AE57367 | ND |
| 2019-03-06 | AE57369 | ND |
| 2019-04-10 | AE62068 | ND |
| 2019-04-11 | AE62064 | ND |
| 2019-04-11 | AE62066 | ND |
| 2019-06-25 | AE72011 | ND |
| 2019-06-25 | AE72013 | ND |
| 2019-06-25 | AE72015 | ND |
| 2019-07-24 | AE75989 | ND |
| 2019-07-24 | AE75999 | ND |
| 2019-07-24 | AE76001 | ND |
| 2019-07-25 | AE75991 | ND |
| 2019-07-25 | AE75993 | ND |
| 2019-09-23 | AE84250 | ND |
| 2019-09-23 | AE84254 | ND |
| 2019-09-23 | AE84256 | ND |
| 2019-11-18 | AE89557 | ND |
| 2019-11-18 | AE89559 | ND |
| 2019-11-18 | AE89561 | ND |
| 2019-11-22 | AE90412 | ND |
| 2019-11-22 | AE90414 | ND |
| 2019-11-22 | AE90418 | ND |
| 2019-11-22 | AE90420 | ND |
| 2019-12-02 | AE90834 | ND |
| 2019-12-02 | AE90836 | ND |
| 2019-12-02 | AE90838 | ND |
| 2019-12-02 | AE90840 | ND |
| 2019-12-02 | AE90842 | ND |
| 2019-12-02 | AE90844 | ND |
| 2019-12-02 | AE90846 | ND |
| 2020-02-25 | AE99779 | ND |
| 2020-03-16 | AF02937 | ND |
| 2020-03-16 | AF02941 | ND |
| 2020-03-16 | AF02961 | ND |
| 2020-06-11 | AF15105 | ND |
| 2020-06-11 | AF15107 | ND |
| 2020-06-29 | AF17302 | ND |
| 2020-06-29 | AF17304 | ND |
| 2020-06-29 | AF17306 | ND |
| 2020-06-29 | AF17308 | ND |
| 2020-08-03 | AF21663 | ND |
| 2020-08-03 | AF21665 | ND |
| 2020-08-03 | AF21677 | ND |
| 2020-08-03 | AF21679 | ND |
| 2020-08-03 | AF21681 | ND |
| 2020-08-26 | AF25415 | ND |
| 2020-08-27 | AF25673 | ND |
| 2020-08-27 | AF25675 | ND |
| 2020-08-27 | AF25677 | ND |
| 2020-10-19 | AF31120 | ND |
| 2020-10-19 | AF31122 | ND |
| 2020-10-19 | AF31124 | ND |
| 2020-10-19 | AF31126 | ND |
| 2020-10-26 | AF31906 | ND |
| 2020-10-26 | AF31908 | ND |
| 2020-10-26 | AF31910 | ND |
| 2020-10-26 | AF31912 | ND |
| 2020-10-26 | AF31916 | ND |
| 2020-10-26 | AF31918 | ND |
| 2020-11-04 | AF33264 | ND |
| 2020-11-04 | AF33266 | ND |
| 2020-11-04 | AF33268 | ND |
| 2020-11-04 | AF33270 | ND |
| 2020-11-04 | AF33272 | ND |
| 2020-11-05 | AF33494 | ND |
| 2020-11-05 | AF33496 | ND |
| 2020-11-05 | AF33502 | ND |
| 2020-11-30 | AF35856 | ND |
| 2020-12-02 | AF36289 | ND |
| 2020-12-04 | AF36697 | ND |
| 2021-02-10 | Q2104495001 | ND |
| 2021-02-10 | Q2104495003 | ND |
| 2021-04-28 | AF51950 | ND |
| 2021-04-28 | AF51956 | ND |
| 2021-04-29 | AF51940 | ND |
| 2021-04-29 | AF51946 | ND |
| 2021-04-29 | AF51948 | ND |
| 2021-04-29 | AF51952 | ND |
| 2021-07-21 | AF62844 | ND |
| 2021-07-21 | AF62846 | ND |
| 2021-07-21 | AF62848 | ND |
| 2021-07-21 | AF62856 | ND |
| 2021-07-21 | AF62858 | ND |
| 2021-07-21 | AF62860 | ND |
| 2021-07-21 | AF62862 | ND |
| 2021-07-21 | AF62864 | ND |
| 2021-08-03 | AF64495 | ND |
| 2021-08-03 | AF64497 | ND |
| 2021-08-03 | AF64499 | ND |
| 2021-08-03 | AF64501 | ND |
| 2021-08-03 | AF64503 | ND |
| 2021-08-03 | AF64505 | ND |
| 2021-08-03 | AF64507 | ND |
| 2021-08-03 | AF64509 | ND |
| 2021-09-09 | AF69339 | ND |
| 2021-09-09 | AF69351 | ND |
| 2021-09-09 | AF69353 | ND |
| 2021-10-13 | AF73358 | ND |
| 2021-10-13 | AF73360 | ND |
| 2021-10-13 | AF73362 | ND |
| 2021-10-13 | AF73364 | ND |
| 2021-10-13 | AF73368 | ND |
| 2021-10-13 | AF73376 | ND |
| 2021-10-13 | AF73378 | ND |
| 2021-12-14 | AF78698 | ND |
| 2021-12-14 | AF78700 | ND |
| 2021-12-14 | AF78702 | ND |
| 2021-12-14 | AF78704 | ND |
| 2021-12-15 | AF78830 | ND |
| 2021-12-15 | AF78832 | ND |
| 2021-12-15 | AF78834 | ND |
| 2021-12-15 | AF78836 | ND |
| 2022-02-18 | AF85699 | ND |
| 2022-03-23 | AF90206 | ND |
| 2022-03-24 | AF90490 | ND |
| 2022-03-24 | AF90492 | ND |
| 2022-05-19 | AF97772 | ND |
| 2022-05-19 | AF97776 | ND |
| 2022-05-19 | AF97778 | ND |
| 2022-05-19 | AF97780 | ND |
| 2022-05-19 | AF97782 | ND |
| 2022-06-29 | AG02791 | ND |
| 2022-06-29 | AG02795 | ND |
| 2022-08-16 | AG09468 | ND |
| 2022-08-16 | AG09470 | ND |
| 2022-08-16 | AG09472 | ND |
| 2022-08-16 | AG09474 | ND |
| 2022-08-17 | AG09684 | ND |
| 2022-08-17 | AG09730 | ND |
| 2022-09-20 | AG13905 | ND |
| 2022-10-10 | AG16462 | ND |
| 2022-10-10 | AG16464 | ND |
| 2022-10-10 | AG16466 | ND |
| 2022-10-10 | AG16468 | ND |
| 2022-10-10 | AG16476 | ND |
| 2022-10-10 | AG16478 | ND |
| 2022-10-11 | AG16691 | ND |
| 2022-10-11 | AG16693 | ND |
| 2022-10-11 | AG16695 | ND |
| 2022-10-24 | AG18098 | ND |
| 2022-10-24 | AG18100 | ND |
| 2022-10-24 | AG18102 | ND |
| 2022-10-24 | AG18104 | ND |
| 2022-10-25 | AG18371 | ND |
| 2022-10-25 | AG18373 | ND |
| 2022-10-25 | AG18375 | ND |
| 2023-01-31 | AG26806 | ND |
| 2023-02-23 | AG30266 | ND |
| 2023-04-06 | AG35838 | ND |
| 2023-04-06 | AG35840 | ND |
| 2023-04-06 | AG35842 | ND |
| 2023-04-06 | AG35844 | ND |
| 2023-04-06 | AG35846 | ND |
| 2023-04-06 | AG35860 | ND |
| 2023-05-16 | AG40863 | ND |
| 2023-05-17 | AG40865 | ND |
| 2023-06-27 | AG46175 | ND |
| 2023-06-27 | AG46177 | ND |
| 2023-06-27 | AG46195 | ND |
| 2023-06-27 | AG46205 | ND |
| 2023-06-27 | AG46213 | ND |
| 2023-06-27 | AG46215 | ND |
| 2023-08-23 | AG53733 | ND |
| 2023-08-23 | AG53735 | ND |
| 2023-08-24 | AG54058 | ND |
| 2023-09-21 | AG57282 | ND |
| 2023-09-21 | AG57284 | ND |
| 2023-09-21 | AG57286 | ND |
| 2023-09-21 | AG57288 | ND |
| 2023-10-10 | AG59147 | ND |
| 2023-10-10 | AG59149 | ND |
| 2023-10-10 | AG59159 | ND |
| 2023-10-10 | AG59161 | ND |
| 2023-10-10 | AG59163 | ND |
| 2023-10-11 | AG59453 | ND |
| 2023-10-11 | AG59455 | ND |
| 2023-10-11 | AG59457 | ND |
| 2023-11-30 | AG65050 | ND |
| 2023-12-18 | AG66850 | ND |
| 2023-12-18 | AG66852 | ND |
| 2023-12-18 | AG66854 | ND |
| 2023-12-18 | AG66856 | ND |