Chloroform
Dekalb County
Chloroform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Chloroform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Read More.
In addition to tap water disinfection, chloroform pollution in the environment also comes from industrial discharges from pulp and paper mills, and from urban wastewater effluent. Human studies show that chloroform damages the kidneys, liver and central nervous system. In animals, chloroform causes infertility, birth defects and cancer.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 19.5 ppb | 49 | 49 | 5.50 ppb - 36.0 ppb |
2015 | 21.0 ppb | 49 | 49 | 2.60 ppb - 42.0 ppb |
2016 | 23.2 ppb | 49 | 49 | 3.60 ppb - 44.0 ppb |
2017 | 27.4 ppb | 49 | 49 | 8.30 ppb - 59.0 ppb |
2018 | 22.4 ppb | 49 | 49 | 5.20 ppb - 42.0 ppb |
2019 | 21.0 ppb | 49 | 49 | 4.90 ppb - 38.0 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.4 ppb
The EWG Health Guideline of 0.4 ppb for chloroform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-01-13 | AI26289 | 13.0 ppb |
2014-01-13 | AI26290 | 19.0 ppb |
2014-01-13 | AI26291 | 12.0 ppb |
2014-01-13 | AI26292 | 14.0 ppb |
2014-01-13 | AI26293 | 26.0 ppb |
2014-01-13 | AI26294 | 15.0 ppb |
2014-01-13 | AI26295 | 12.0 ppb |
2014-01-14 | AI26538 | 10.00 ppb |
2014-01-14 | AI26539 | 18.0 ppb |
2014-01-14 | AI26540 | 14.0 ppb |
2014-01-14 | AI26541 | 6.70 ppb |
2014-01-14 | AI26542 | 14.0 ppb |
2014-02-25 | AI28493 | 5.50 ppb |
2014-04-08 | AI37329 | 14.0 ppb |
2014-04-08 | AI37330 | 16.0 ppb |
2014-04-08 | AI37331 | 17.0 ppb |
2014-04-08 | AI37332 | 11.0 ppb |
2014-04-08 | AI37333 | 20.0 ppb |
2014-04-09 | AI37629 | 26.0 ppb |
2014-04-09 | AI37630 | 18.0 ppb |
2014-04-09 | AI37631 | 18.0 ppb |
2014-04-09 | AI37632 | 15.0 ppb |
2014-04-09 | AI37633 | 24.0 ppb |
2014-04-09 | AI37634 | 21.0 ppb |
2014-04-09 | AI37635 | 13.0 ppb |
2014-07-08 | AI45029 | 23.0 ppb |
2014-07-08 | AI45030 | 24.0 ppb |
2014-07-08 | AI45031 | 27.0 ppb |
2014-07-08 | AI45032 | 21.0 ppb |
2014-07-08 | AI45033 | 36.0 ppb |
2014-07-08 | AI45034 | 27.0 ppb |
2014-07-08 | AI45035 | 24.0 ppb |
2014-07-09 | AI45202 | 26.0 ppb |
2014-07-09 | AI45203 | 30.0 ppb |
2014-07-09 | AI45204 | 22.0 ppb |
2014-07-09 | AI45205 | 12.0 ppb |
2014-07-09 | AI45206 | 22.0 ppb |
2014-10-14 | AI57401 | 32.0 ppb |
2014-10-14 | AI57402 | 15.0 ppb |
2014-10-14 | AI57403 | 9.90 ppb |
2014-10-14 | AI57404 | 24.0 ppb |
2014-10-15 | AI57608 | 33.0 ppb |
2014-10-15 | AI57609 | 26.0 ppb |
2014-10-15 | AI57610 | 25.0 ppb |
2014-10-15 | AI57611 | 23.0 ppb |
2014-10-15 | AI57612 | 30.0 ppb |
2014-10-15 | AI57613 | 24.0 ppb |
2014-10-15 | AI57614 | 14.0 ppb |
2014-10-15 | AI57618 | 13.0 ppb |
2015-01-20 | AI62991 | 16.0 ppb |
2015-01-20 | AI62992 | 14.0 ppb |
2015-01-20 | AI62993 | 11.0 ppb |
2015-01-20 | AI62994 | 18.0 ppb |
2015-01-20 | AI62995 | 11.0 ppb |
2015-01-20 | AI62996 | 12.0 ppb |
2015-01-21 | AI63098 | 12.0 ppb |
2015-01-21 | AI63099 | 9.60 ppb |
2015-01-21 | AI63100 | 14.0 ppb |
2015-01-21 | AI63101 | 13.0 ppb |
2015-01-21 | AI63102 | 6.90 ppb |
2015-01-21 | AI63103 | 16.0 ppb |
2015-02-18 | AI64996 | 2.60 ppb |
2015-04-15 | AI74863 | 13.0 ppb |
2015-04-15 | AI74864 | 20.0 ppb |
2015-04-15 | AI74865 | 14.0 ppb |
2015-04-15 | AI74866 | 9.20 ppb |
2015-04-15 | AI74867 | 20.0 ppb |
2015-04-16 | AI75010 | 18.0 ppb |
2015-04-16 | AI75011 | 40.0 ppb |
2015-04-16 | AI75012 | 20.0 ppb |
2015-04-16 | AI75013 | 17.0 ppb |
2015-04-16 | AI75014 | 23.0 ppb |
2015-04-16 | AI75015 | 25.0 ppb |
2015-04-16 | AI75016 | 12.0 ppb |
2015-07-13 | AI82568 | 19.0 ppb |
2015-07-13 | AI82569 | 38.0 ppb |
2015-07-13 | AI82570 | 17.0 ppb |
2015-07-13 | AI82571 | 12.0 ppb |
2015-07-13 | AI82572 | 41.0 ppb |
2015-07-14 | AI82833 | 23.0 ppb |
2015-07-14 | AI82834 | 33.0 ppb |
2015-07-14 | AI82835 | 29.0 ppb |
2015-07-14 | AI82836 | 17.0 ppb |
2015-07-14 | AI82837 | 34.0 ppb |
2015-07-14 | AI82838 | 31.0 ppb |
2015-07-14 | AI82839 | 20.0 ppb |
2015-10-12 | AI92671 | 19.0 ppb |
2015-10-12 | AI92673 | 42.0 ppb |
2015-10-12 | AI92675 | 27.0 ppb |
2015-10-12 | AI92680 | 13.0 ppb |
2015-10-12 | AI92681 | 35.0 ppb |
2015-10-13 | AI92670 | 27.0 ppb |
2015-10-13 | AI92672 | 24.0 ppb |
2015-10-13 | AI92674 | 28.0 ppb |
2015-10-13 | AI92676 | 28.0 ppb |
2015-10-13 | AI92677 | 33.0 ppb |
2015-10-13 | AI92678 | 34.0 ppb |
2015-10-13 | AI92679 | 18.0 ppb |
2016-01-11 | AJ03757 | 21.0 ppb |
2016-01-11 | AJ03758 | 17.0 ppb |
2016-01-11 | AJ03759 | 18.0 ppb |
2016-01-11 | AJ03760 | 16.0 ppb |
2016-01-11 | AJ03761 | 22.0 ppb |
2016-01-11 | AJ03762 | 17.0 ppb |
2016-01-11 | AJ03763 | 10.00 ppb |
2016-01-12 | AJ03931 | 14.0 ppb |
2016-01-12 | AJ03932 | 17.0 ppb |
2016-01-12 | AJ03933 | 16.0 ppb |
2016-01-12 | AJ03934 | 12.0 ppb |
2016-01-12 | AJ03935 | 17.0 ppb |
2016-02-22 | AJ06798 | 3.60 ppb |
2016-04-11 | AJ09749 | 17.0 ppb |
2016-04-11 | AJ09750 | 37.0 ppb |
2016-04-11 | AJ09751 | 20.0 ppb |
2016-04-11 | AJ09752 | 40.0 ppb |
2016-04-11 | AJ09753 | 16.0 ppb |
2016-04-12 | AJ09866 | 23.0 ppb |
2016-04-12 | AJ09867 | 20.0 ppb |
2016-04-12 | AJ09868 | 21.0 ppb |
2016-04-12 | AJ09869 | 19.0 ppb |
2016-04-12 | AJ09870 | 26.0 ppb |
2016-04-12 | AJ09871 | 26.0 ppb |
2016-04-12 | AJ09872 | 18.0 ppb |
2016-07-11 | AJ16934 | 17.0 ppb |
2016-07-11 | AJ16935 | 39.0 ppb |
2016-07-11 | AJ16936 | 21.0 ppb |
2016-07-11 | AJ16937 | 11.0 ppb |
2016-07-11 | AJ16938 | 44.0 ppb |
2016-07-12 | AJ17237 | 37.0 ppb |
2016-07-12 | AJ17238 | 38.0 ppb |
2016-07-12 | AJ17239 | 23.0 ppb |
2016-07-12 | AJ17240 | 22.0 ppb |
2016-07-12 | AJ17241 | 43.0 ppb |
2016-07-12 | AJ17242 | 42.0 ppb |
2016-07-12 | AJ17243 | 23.0 ppb |
2016-10-11 | AJ31118 | 29.0 ppb |
2016-10-11 | AJ31119 | 32.0 ppb |
2016-10-11 | AJ31120 | 28.0 ppb |
2016-10-11 | AJ31121 | 16.0 ppb |
2016-10-11 | AJ31122 | 37.0 ppb |
2016-10-11 | AJ31123 | 42.0 ppb |
2016-10-12 | AJ31222 | 12.0 ppb |
2016-10-12 | AJ31223 | 27.0 ppb |
2016-10-12 | AJ31224 | 16.0 ppb |
2016-10-12 | AJ31225 | 20.0 ppb |
2016-10-12 | AJ31226 | 10.00 ppb |
2016-10-12 | AJ31227 | 25.0 ppb |
2017-01-11 | AJ37934 | 22.0 ppb |
2017-01-11 | AJ37935 | 18.0 ppb |
2017-01-11 | AJ37936 | 14.0 ppb |
2017-01-11 | AJ37937 | 24.0 ppb |
2017-01-11 | AJ37938 | 23.0 ppb |
2017-01-11 | AJ37939 | 31.0 ppb |
2017-01-12 | AJ38052 | 24.0 ppb |
2017-01-12 | AJ38053 | 11.0 ppb |
2017-01-12 | AJ38054 | 21.0 ppb |
2017-01-12 | AJ38055 | 17.0 ppb |
2017-01-12 | AJ38056 | 12.0 ppb |
2017-01-12 | AJ38057 | 25.0 ppb |
2017-04-11 | AJ52929 | 18.0 ppb |
2017-04-11 | AJ52930 | 29.0 ppb |
2017-04-11 | AJ52931 | 15.0 ppb |
2017-04-11 | AJ52932 | 29.0 ppb |
2017-04-11 | AJ52933 | 25.0 ppb |
2017-04-12 | AJ53102 | 34.0 ppb |
2017-04-12 | AJ53103 | 22.0 ppb |
2017-04-12 | AJ53104 | 21.0 ppb |
2017-04-12 | AJ53105 | 26.0 ppb |
2017-04-12 | AJ53106 | 30.0 ppb |
2017-04-12 | AJ53107 | 14.0 ppb |
2017-04-13 | AJ53212 | 28.0 ppb |
2017-05-10 | AJ55092 | 8.30 ppb |
2017-07-10 | AJ59539 | 56.0 ppb |
2017-07-10 | AJ59540 | 59.0 ppb |
2017-07-10 | AJ59541 | 49.0 ppb |
2017-07-10 | AJ59542 | 41.0 ppb |
2017-07-10 | AJ59543 | 57.0 ppb |
2017-07-10 | AJ59544 | 55.0 ppb |
2017-07-10 | AJ59545 | 26.0 ppb |
2017-07-11 | AJ59708 | 34.0 ppb |
2017-07-11 | AJ59709 | 47.0 ppb |
2017-07-11 | AJ59710 | 36.0 ppb |
2017-07-11 | AJ59711 | 25.0 ppb |
2017-07-11 | AJ59712 | 40.0 ppb |
2017-10-10 | AJ71110 | 30.0 ppb |
2017-10-10 | AJ71111 | 32.0 ppb |
2017-10-10 | AJ71112 | 27.0 ppb |
2017-10-10 | AJ71113 | 27.0 ppb |
2017-10-10 | AJ71114 | 28.0 ppb |
2017-10-10 | AJ71115 | 10.00 ppb |
2017-10-11 | AJ71433 | 21.0 ppb |
2017-10-11 | AJ71434 | 23.0 ppb |
2017-10-11 | AJ71435 | 14.0 ppb |
2017-10-11 | AJ71436 | 18.0 ppb |
2017-10-11 | AJ71437 | 14.0 ppb |
2017-10-11 | AJ71438 | 31.0 ppb |
2018-01-10 | AJ76344 | 13.0 ppb |
2018-01-10 | AJ76345 | 16.0 ppb |
2018-01-10 | AJ76346 | 18.0 ppb |
2018-01-10 | AJ76347 | 9.40 ppb |
2018-01-10 | AJ76348 | 28.0 ppb |
2018-01-11 | AJ76521 | 22.0 ppb |
2018-01-11 | AJ76522 | 16.0 ppb |
2018-01-11 | AJ76523 | 16.0 ppb |
2018-01-11 | AJ76524 | 18.0 ppb |
2018-01-11 | AJ76525 | 18.0 ppb |
2018-01-11 | AJ76526 | 15.0 ppb |
2018-01-11 | AJ76527 | 9.50 ppb |
2018-02-20 | AJ84185 | 5.20 ppb |
2018-04-10 | AJ87091 | 19.0 ppb |
2018-04-10 | AJ87092 | 19.0 ppb |
2018-04-10 | AJ87093 | 22.0 ppb |
2018-04-10 | AJ87094 | 23.0 ppb |
2018-04-10 | AJ87095 | 20.0 ppb |
2018-04-10 | AJ87096 | 12.0 ppb |
2018-04-11 | AJ87249 | 27.0 ppb |
2018-04-11 | AJ87250 | 28.0 ppb |
2018-04-11 | AJ87251 | 20.0 ppb |
2018-04-11 | AJ87252 | 19.0 ppb |
2018-04-11 | AJ87253 | 15.0 ppb |
2018-04-11 | AJ87254 | 14.0 ppb |
2018-07-10 | AJ93394 | 24.0 ppb |
2018-07-10 | AJ93395 | 24.0 ppb |
2018-07-10 | AJ93396 | 27.0 ppb |
2018-07-10 | AJ93397 | 33.0 ppb |
2018-07-10 | AJ93398 | 35.0 ppb |
2018-07-10 | AJ93399 | 35.0 ppb |
2018-07-10 | AJ93400 | 18.0 ppb |
2018-07-11 | AJ93714 | 26.0 ppb |
2018-07-11 | AJ93715 | 30.0 ppb |
2018-07-11 | AJ93716 | 33.0 ppb |
2018-07-11 | AJ93717 | 20.0 ppb |
2018-07-11 | AJ93718 | 34.0 ppb |
2018-10-09 | AK03642 | 14.0 ppb |
2018-10-09 | AK03643 | 42.0 ppb |
2018-10-09 | AK03644 | 31.0 ppb |
2018-10-09 | AK03645 | 26.0 ppb |
2018-10-09 | AK03646 | 23.0 ppb |
2018-10-09 | AK03647 | 34.0 ppb |
2018-10-09 | AK03648 | 26.0 ppb |
2018-10-10 | AK03789 | 24.0 ppb |
2018-10-10 | AK03790 | 25.0 ppb |
2018-10-10 | AK03791 | 24.0 ppb |
2018-10-10 | AK03792 | 16.0 ppb |
2018-10-10 | AK03793 | 33.0 ppb |
2019-01-08 | AK09016 | 17.0 ppb |
2019-01-08 | AK09017 | 38.0 ppb |
2019-01-08 | AK09018 | 12.0 ppb |
2019-01-08 | AK09019 | 21.0 ppb |
2019-01-08 | AK09020 | 21.0 ppb |
2019-01-08 | AK09021 | 24.0 ppb |
2019-01-08 | AK09022 | 13.0 ppb |
2019-01-09 | AK09124 | 20.0 ppb |
2019-01-09 | AK09125 | 20.0 ppb |
2019-01-09 | AK09126 | 20.0 ppb |
2019-01-09 | AK09127 | 13.0 ppb |
2019-01-09 | AK09128 | 22.0 ppb |
2019-03-28 | AK14078 | 4.90 ppb |
2019-04-09 | AK14823 | 18.0 ppb |
2019-04-09 | AK14824 | 37.0 ppb |
2019-04-09 | AK14825 | 11.0 ppb |
2019-04-09 | AK14826 | 16.0 ppb |
2019-04-09 | AK14827 | 23.0 ppb |
2019-04-09 | AK14828 | 18.0 ppb |
2019-04-09 | AK14829 | 19.0 ppb |
2019-04-10 | AK14942 | 18.0 ppb |
2019-04-10 | AK14943 | 17.0 ppb |
2019-04-10 | AK14944 | 18.0 ppb |
2019-04-10 | AK14945 | 12.0 ppb |
2019-04-10 | AK14946 | 21.0 ppb |
2019-07-09 | AK21661 | 24.0 ppb |
2019-07-09 | AK21662 | 26.0 ppb |
2019-07-09 | AK21663 | 19.0 ppb |
2019-07-09 | AK21664 | 26.0 ppb |
2019-07-09 | AK21665 | 12.0 ppb |
2019-07-09 | AK21666 | 34.0 ppb |
2019-07-10 | AK21903 | 17.0 ppb |
2019-07-10 | AK21904 | 30.0 ppb |
2019-07-10 | AK21905 | 14.0 ppb |
2019-07-10 | AK21906 | 32.0 ppb |
2019-07-10 | AK21907 | 35.0 ppb |
2019-07-10 | AK21908 | 24.0 ppb |
2019-10-07 | AK34277 | 18.0 ppb |
2019-10-07 | AK34278 | 28.0 ppb |
2019-10-07 | AK34279 | 13.0 ppb |
2019-10-07 | AK34280 | 19.0 ppb |
2019-10-07 | AK34281 | 33.0 ppb |
2019-10-07 | AK34282 | 38.0 ppb |
2019-10-07 | AK34283 | 15.0 ppb |
2019-10-08 | AK34448 | 18.0 ppb |
2019-10-08 | AK34449 | 23.0 ppb |
2019-10-08 | AK34450 | 22.0 ppb |
2019-10-08 | AK34451 | 13.0 ppb |
2019-10-08 | AK34452 | 22.0 ppb |