Chloroform

City of Modesto

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.

Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

503

Samples

Samples exceeding legal limit (MCL)

295

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	N/A	0	0	N/A
2014	12.9 ppb	93	54	ND - 56.0 ppb
2015	12.1 ppb	87	45	ND - 67.4 ppb
2016	21.9 ppb	79	44	ND - 91.6 ppb
2017	17.9 ppb	102	58	ND - 77.9 ppb
2018	19.8 ppb	72	49	ND - 58.9 ppb
2019	24.6 ppb	70	45	ND - 81.2 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
2014-01-08	1610-051-1142	ND
2014-01-08	1610-146-0910	3.10 ppb
2014-02-12	1610-166-0900	ND
2014-02-26	1610-166-0805	0.500 ppb
2014-03-05	1610-018-1025	7.60 ppb
2014-03-11	1610-901-0825	24.8 ppb
2014-03-11	1610-906-1100	42.7 ppb
2014-03-12	1610-166-1125	0.510 ppb
2014-03-18	1610-902-1156	52.4 ppb
2014-03-18	1610-903-1320	19.7 ppb
2014-03-18	1610-905-1247	49.1 ppb
2014-03-18	1610-907-0840	39.2 ppb
2014-03-25	1610-900-1035	5.90 ppb
2014-03-25	1610-904-0820	48.5 ppb
2014-03-26	1610-166-0800	ND
2014-04-09	1610-003-1135	1.80 ppb
2014-04-09	1610-008-1325	6.80 ppb
2014-04-09	1610-009-1240	3.30 ppb
2014-06-04	1610-078-0930	1.80 ppb
2014-06-10	1610-901-1225	21.3 ppb
2014-06-10	1610-906-1235	37.5 ppb
2014-06-17	1610-902-1140	25.9 ppb
2014-06-17	1610-903-1325	8.91 ppb
2014-06-17	1610-905-1255	31.4 ppb
2014-06-17	1610-907-1040	25.1 ppb
2014-06-24	1610-900-1030	20.1 ppb
2014-06-24	1610-904-1050	39.4 ppb
2014-07-02	1610-078-0945	2.20 ppb
2014-07-02	1610-151-1110	6.50 ppb
2014-07-09	1610-003-1400	0.930 ppb
2014-07-09	1610-008-1305	ND
2014-07-09	1610-009-1330	1.90 ppb
2014-07-09	1610-166-1138	ND
2014-08-06	1610-078-0945	1.80 ppb
2014-08-13	1610-166-0835	ND
2014-09-03	1610-035-0820	ND
2014-09-03	1610-124-1230	1.90 ppb
2014-09-03	1610-147-1051	ND
2014-09-03	1610-149-1012	43.0 ppb
2014-09-03	1610-154-1249	21.0 ppb
2014-09-09	1610-901-0745	22.3 ppb
2014-09-09	1610-906-1010	53.0 ppb
2014-09-10	1610-012-0740	4.00 ppb
2014-09-10	1610-031-0836	ND
2014-09-10	1610-070-0752	ND
2014-09-10	1610-130-0750	ND
2014-09-10	1610-132-1220	ND
2014-09-10	1610-133-1334	ND
2014-09-10	1610-135-1205	ND
2014-09-10	1610-137-0925	ND
2014-09-10	1610-166-1005	ND
2014-09-10	1610-172-0850	47.0 ppb
2014-09-10	1610-185-0955	ND
2014-09-10	1610-187-0940	3.40 ppb
2014-09-10	1610-189-0915	ND
2014-09-10	1610-196-0918	ND
2014-09-16	1610-902-0816	48.4 ppb
2014-09-16	1610-903-1000	6.92 ppb
2014-09-16	1610-905-0735	33.7 ppb
2014-09-16	1610-907-0920	46.5 ppb
2014-09-17	1610-169-1211	ND
2014-09-17	1610-170-1020	ND
2014-09-17	1610-171-0920	ND
2014-09-17	1610-186-1039	ND
2014-09-17	1610-191-1128	ND
2014-09-17	1610-193-1005	ND
2014-09-18	1610-043-1335	ND
2014-09-18	1610-047-1320	ND
2014-09-18	1610-048-1010	ND
2014-09-18	1610-062-0940	ND
2014-09-18	1610-068-0910	ND
2014-09-18	1610-097-1245	ND
2014-09-18	1610-127-1400	ND
2014-09-18	1610-234-1100	ND
2014-09-23	1610-900-1014	24.5 ppb
2014-09-23	1610-904-0815	56.0 ppb
2014-10-01	1610-044-1000	1.40 ppb
2014-10-01	1610-078-0945	ND
2014-10-08	1610-003-0740	1.30 ppb
2014-10-08	1610-009-0800	1.60 ppb
2014-10-08	1610-166-0920	ND
2014-11-05	1610-078-0920	ND
2014-11-13	1610-166-1015	ND
2014-12-03	1610-078-1010	ND
2014-12-09	1610-901-1030	19.7 ppb
2014-12-09	1610-906-1107	39.2 ppb
2014-12-16	1610-166-0755	ND
2014-12-16	1610-902-1110	47.2 ppb
2014-12-16	1610-903-1150	8.21 ppb
2014-12-16	1610-905-1300	34.3 ppb
2014-12-16	1610-907-1021	27.0 ppb
2014-12-22	1610-904-1026	38.5 ppb
2014-12-23	1610-900-1250	36.3 ppb
2015-01-07	1610-078-0940	ND
2015-01-07	1610-148-1038	9.60 ppb
2015-01-14	1610-003-0810	ND
2015-01-14	1610-009-0835	3.00 ppb
2015-01-14	1610-166-0913	ND
2015-02-04	1610-078-0940	ND
2015-02-04	1610-243-0830	11.0 ppb
2015-02-11	1610-166-1050	ND
2015-03-04	1610-018-1150	4.00 ppb
2015-03-04	1610-045-0915	1.10 ppb
2015-03-04	1610-050-1015	ND
2015-03-04	1610-053-1250	ND
2015-03-04	1610-078-1050	ND
2015-03-04	1610-239-0950	16.0 ppb
2015-03-04	1610-241-1110	18.0 ppb
2015-03-10	1610-901-1119	26.2 ppb
2015-03-10	1610-906-1015	40.6 ppb
2015-03-11	1610-041-1315	ND
2015-03-11	1610-129-1345	ND
2015-03-11	1610-131-0840	ND
2015-03-11	1610-166-0930	ND
2015-03-11	1610-221-1055	ND
2015-03-17	1610-902-0915	49.3 ppb
2015-03-17	1610-903-1130	1.06 ppb
2015-03-17	1610-905-0750	5.79 ppb
2015-03-17	1610-907-1100	10.4 ppb
2015-03-18	1610-226-1025	ND
2015-03-24	1610-900-0930	ND
2015-03-24	1610-904-0705	ND
2015-03-25	1610-008-0718	1.30 ppb
2015-04-08	1610-003-0800	2.00 ppb
2015-04-08	1610-008-0850	10.00 ppb
2015-04-08	1610-009-0825	17.0 ppb
2015-04-08	1610-078-0810	ND
2015-04-08	1610-166-0935	ND
2015-05-06	1610-061-1035	47.0 ppb
2015-05-06	1610-078-0915	ND
2015-05-14	1610-166-1020	ND
2015-06-03	1610-078-0945	ND
2015-06-09	1610-901-0920	42.7 ppb
2015-06-09	1610-906-1200	29.9 ppb
2015-06-10	1610-166-1107	ND
2015-06-16	1610-902-0940	51.4 ppb
2015-06-16	1610-903-1020	18.2 ppb
2015-06-16	1610-905-1005	43.0 ppb
2015-06-16	1610-907-1123	38.8 ppb
2015-06-23	1610-900-0925	12.9 ppb
2015-06-23	1610-904-1010	49.3 ppb
2015-07-01	1610-078-0940	ND
2015-07-08	1610-003-0900	2.10 ppb
2015-07-08	1610-009-0816	1.40 ppb
2015-07-08	1610-166-0725	ND
2015-07-15	1610-049-0840	ND
2015-08-05	1610-078-0940	ND
2015-08-12	1610-166-0825	ND
2015-09-02	1610-078-0935	ND
2015-09-08	1610-901-0802	54.6 ppb
2015-09-08	1610-906-0950	67.4 ppb
2015-09-09	1610-166-0852	ND
2015-09-15	1610-902-1032	31.4 ppb
2015-09-15	1610-903-1410	9.42 ppb
2015-09-15	1610-905-1130	42.2 ppb
2015-09-15	1610-907-1050	33.6 ppb
2015-09-22	1610-900-0924	17.6 ppb
2015-09-22	1610-904-0910	45.4 ppb
2015-09-30	1610-165-0910	ND
2015-09-30	1610-191-0902	ND
2015-10-07	1610-078-1025	ND
2015-10-14	1610-003-0952	3.50 ppb
2015-10-14	1610-008-0858	7.90 ppb
2015-10-14	1610-009-0824	9.70 ppb
2015-10-14	1610-166-1117	ND
2015-11-04	1610-078-1000	ND
2015-11-09	1610-166-1145	ND
2015-12-02	1610-078-0940	ND
2015-12-08	1610-901-0910	3.99 ppb
2015-12-08	1610-906-1005	43.7 ppb
2015-12-09	1610-166-0845	ND
2015-12-15	1610-003-1020	5.58 ppb
2015-12-15	1610-902-1055	43.6 ppb
2015-12-15	1610-905-1130	40.2 ppb
2015-12-15	1610-907-0935	32.5 ppb
2015-12-16	1610-078-0835	ND
2015-12-16	1610-166-0830	ND
2015-12-22	1610-900-0930	ND
2015-12-22	1610-904-1105	ND
2015-12-30	1610-078-0815	ND
2016-01-06	1610-078-0805	ND
2016-01-13	1610-003-0900	2.20 ppb
2016-01-13	1610-008-1007	7.70 ppb
2016-01-27	1610-078-0745	ND
2016-02-03	1610-078-1030	ND
2016-02-10	1610-009-1120	37.0 ppb
2016-02-17	1610-078-1419	ND
2016-02-25	1610-166-1025	ND
2016-03-02	1610-018-1315	1.70 ppb
2016-03-02	1610-078-1015	ND
2016-03-08	1610-901-1322	40.0 ppb
2016-03-08	1610-906-0845	47.0 ppb
2016-03-09	1610-166-1120	ND
2016-03-15	1610-902-1307	ND
2016-03-15	1610-903-1100	ND
2016-03-15	1610-905-0740	ND
2016-03-15	1610-907-1010	ND
2016-03-16	1610-078-0850	ND
2016-03-22	1610-900-1010	42.7 ppb
2016-03-22	1610-904-0848	48.7 ppb
2016-04-06	1610-078-0935	ND
2016-04-13	1610-003-1428	18.0 ppb
2016-04-13	1610-008-1337	29.0 ppb
2016-04-13	1610-009-1358	53.0 ppb
2016-04-13	1610-166-1300	ND
2016-05-04	1610-078-0945	ND
2016-05-11	1610-166-1150	ND
2016-05-18	1610-027-0715	ND
2016-06-01	1610-078-0935	ND
2016-06-08	1610-166-1300	ND
2016-06-14	1610-901-1015	50.2 ppb
2016-06-14	1610-906-0925	54.5 ppb
2016-06-21	1610-902-0755	57.6 ppb
2016-06-21	1610-903-1255	53.7 ppb
2016-06-21	1610-905-0730	48.0 ppb
2016-06-21	1610-907-1040	73.5 ppb
2016-06-28	1610-900-0830	35.7 ppb
2016-06-28	1610-904-1129	71.3 ppb
2016-07-06	1610-078-0950	ND
2016-07-06	1610-151-1035	9.60 ppb
2016-07-13	1610-003-1237	1.40 ppb
2016-07-13	1610-008-0910	10.00 ppb
2016-07-13	1610-009-0815	65.0 ppb
2016-07-13	1610-166-1002	ND
2016-08-03	1610-078-0925	ND
2016-08-17	1610-166-0818	ND
2016-09-08	1610-078-1015	ND
2016-09-13	1610-901-1430	71.2 ppb
2016-09-13	1610-906-0930	76.5 ppb
2016-09-14	1610-032-0850	1.50 ppb
2016-09-14	1610-132-0950	3.00 ppb
2016-09-14	1610-134-1112	ND
2016-09-14	1610-136-1029	ND
2016-09-14	1610-166-0817	ND
2016-09-20	1610-902-1210	91.6 ppb
2016-09-20	1610-903-1050	37.6 ppb
2016-09-20	1610-905-1300	46.4 ppb
2016-09-20	1610-907-1015	65.9 ppb
2016-09-21	1610-042-1024	ND
2016-09-21	1610-115-1100	ND
2016-09-27	1610-904-0853	16.7 ppb
2016-09-29	1610-900-1008	47.4 ppb
2016-10-05	1610-078-0950	ND
2016-10-12	1610-003-0810	1.80 ppb
2016-10-12	1610-008-0950	48.0 ppb
2016-10-12	1610-009-0815	65.0 ppb
2016-10-12	1610-166-1200	ND
2016-11-02	1610-078-1015	ND
2016-11-09	1610-166-1405	ND
2016-12-07	1610-078-0950	ND
2016-12-13	1610-901-0955	31.8 ppb
2016-12-13	1610-906-1150	50.1 ppb
2016-12-14	1610-166-1033	ND
2016-12-20	1610-902-1313	43.0 ppb
2016-12-20	1610-903-1155	18.2 ppb
2016-12-20	1610-905-0730	37.2 ppb
2016-12-20	1610-907-1025	39.4 ppb
2016-12-27	1610-900-0855	43.2 ppb
2016-12-27	1610-904-0844	37.2 ppb
2017-01-04	1610-078-0955	ND
2017-01-04	1610-146-0958	3.90 ppb
2017-01-11	1610-008-1050	13.0 ppb
2017-01-11	1610-009-1010	28.0 ppb
2017-01-18	1610-166-1100	ND
2017-02-01	1610-078-0955	ND
2017-02-08	1610-166-1140	ND
2017-03-01	1610-018-1215	16.0 ppb
2017-03-01	1610-078-1025	ND
2017-03-03	1644-245-1300	ND
2017-03-08	1610-166-1105	ND
2017-03-14	1610-900-1147	28.6 ppb
2017-03-14	1610-901-1415	53.4 ppb
2017-03-14	1610-902-0950	64.8 ppb
2017-03-14	1610-903-1213	18.5 ppb
2017-03-14	1610-904-0931	47.7 ppb
2017-03-14	1610-905-0912	66.9 ppb
2017-03-14	1610-906-0750	35.6 ppb
2017-03-14	1610-907-1122	45.3 ppb
2017-03-21	1610-902-1155	42.3 ppb
2017-03-21	1610-903-0945	12.4 ppb
2017-03-21	1610-905-1230	39.6 ppb
2017-03-21	1610-907-0735	39.2 ppb
2017-04-05	1610-078-0930	ND
2017-04-12	1610-008-0850	2.10 ppb
2017-04-12	1610-009-0800	57.0 ppb
2017-04-12	1610-166-1000	ND
2017-05-03	1610-078-0855	ND
2017-05-31	1610-166-1005	ND
2017-06-07	1610-078-0910	ND
2017-06-07	1610-146-0735	33.0 ppb
2017-06-13	1610-901-0940	43.2 ppb
2017-06-13	1610-906-0920	63.4 ppb
2017-06-14	1610-166-1035	ND
2017-06-20	1610-902-1058	63.5 ppb
2017-06-20	1610-903-1200	52.6 ppb
2017-06-20	1610-905-0730	41.6 ppb
2017-06-20	1610-907-0915	58.0 ppb
2017-06-27	1610-900-1020	74.0 ppb
2017-06-27	1610-904-1051	63.8 ppb
2017-07-05	1610-078-0915	ND
2017-07-11	1610-008-0950	3.20 ppb
2017-07-11	1610-009-0920	17.0 ppb
2017-07-11	1610-166-1200	ND
2017-08-02	1610-044-0840	ND
2017-08-02	1610-078-0910	ND
2017-08-25	1610-003-1045	2.10 ppb
2017-08-25	1610-166-1120	ND
2017-09-06	5867-035-0835	1.40 ppb
2017-09-06	5867-044-0925	ND
2017-09-06	1610-061-1150	36.0 ppb
2017-09-06	1610-078-0930	ND
2017-09-06	5867-124-0810	21.7 ppb
2017-09-06	5867-147-1105	2.60 ppb
2017-09-06	5867-149-0830	40.1 ppb
2017-09-12	1610-901-1035	45.1 ppb
2017-09-12	1610-906-0750	55.3 ppb
2017-09-13	1610-012-0740	1.000 ppb
2017-09-13	1610-031-0835	ND
2017-09-13	1610-070-0850	ND
2017-09-13	1610-130-1230	ND
2017-09-13	1610-133-1335	ND
2017-09-13	1610-135-1310	1.50 ppb
2017-09-13	1610-137-1113	ND
2017-09-13	1610-166-0840	ND
2017-09-13	1610-172-1015	ND
2017-09-13	1610-187-0900	ND
2017-09-13	1610-189-0940	ND
2017-09-13	1610-196-0815	2.90 ppb
2017-09-19	1610-900-1003	28.3 ppb
2017-09-19	1610-902-1133	77.9 ppb
2017-09-19	1610-903-1146	12.6 ppb
2017-09-19	1610-904-1255	36.8 ppb
2017-09-19	1610-905-1206	42.0 ppb
2017-09-19	1610-907-1301	51.9 ppb
2017-09-20	5867-043-1030	ND
2017-09-20	5867-047-0930	ND
2017-09-20	5867-048-0900	ND
2017-09-20	5867-062-0845	ND
2017-09-20	5867-068-0820	ND
2017-09-20	5867-097-1100	ND
2017-09-20	5867-127-1045	2.40 ppb
2017-09-20	5867-170-0928	2.00 ppb
2017-09-20	5867-191-0958	ND
2017-10-04	1610-078-0900	ND
2017-10-11	1610-003-1030	6.20 ppb
2017-10-11	1610-008-0850	2.10 ppb
2017-10-11	1610-009-0835	46.0 ppb
2017-10-11	1610-051-1010	ND
2017-10-11	1610-166-0925	ND
2017-11-01	1610-078-0940	ND
2017-11-08	1610-166-0925	ND
2017-12-06	1610-078-0940	ND
2017-12-12	1610-901-0937	26.9 ppb
2017-12-12	1610-906-0940	33.6 ppb
2017-12-13	1610-166-1055	ND
2017-12-19	1610-902-0822	32.1 ppb
2017-12-19	1610-903-0930	ND
2017-12-19	1610-905-0755	31.8 ppb
2017-12-19	1610-907-1100	23.4 ppb
2017-12-27	1610-900-0855	9.10 ppb
2017-12-27	1610-904-0839	27.8 ppb
2018-01-04	1610-148-0905	26.0 ppb
2018-01-09	1610-003-1350	3.40 ppb
2018-01-09	1610-008-0950	2.30 ppb
2018-01-09	1610-009-0920	27.0 ppb
2018-01-09	1610-165-1150	ND
2018-01-24	1610-078-0740	ND
2018-02-07	1610-078-0945	ND
2018-02-07	1610-243-0930	5.80 ppb
2018-02-14	1610-166-1020	ND
2018-03-07	1610-045-0930	ND
2018-03-07	1610-050-0920	ND
2018-03-07	1610-053-1000	ND
2018-03-07	1610-078-1055	ND
2018-03-07	1610-241-1045	16.0 ppb
2018-03-13	1610-901-0720	30.7 ppb
2018-03-13	1610-906-1130	30.5 ppb
2018-03-14	1610-041-0950	2.80 ppb
2018-03-14	1610-129-1030	1.50 ppb
2018-03-14	1610-166-0810	ND
2018-03-14	1610-221-0804	ND
2018-03-20	1610-902-0943	35.8 ppb
2018-03-20	1610-903-0935	13.4 ppb
2018-03-20	1610-905-1015	37.8 ppb
2018-03-20	1610-907-0730	35.6 ppb
2018-03-21	1610-018-0845	3.60 ppb
2018-03-21	1610-131-1148	ND
2018-03-21	1610-226-1045	34.0 ppb
2018-03-27	1610-900-0830	42.2 ppb
2018-03-27	1610-904-1020	42.8 ppb
2018-04-04	1610-078-1205	ND
2018-04-11	1610-003-1340	9.00 ppb
2018-04-11	1610-008-1100	2.60 ppb
2018-04-11	1610-009-1005	46.0 ppb
2018-04-11	1610-166-1230	ND
2018-05-02	1610-078-0945	ND
2018-06-06	1610-078-1020	ND
2018-06-12	1610-901-0940	57.4 ppb
2018-06-12	1610-906-0915	58.9 ppb
2018-06-19	1610-902-0745	52.6 ppb
2018-06-19	1610-903-0945	18.8 ppb
2018-06-19	1610-905-0720	35.6 ppb
2018-06-19	1610-907-1010	49.5 ppb
2018-06-26	1610-900-0855	42.8 ppb
2018-06-26	1610-904-0830	57.5 ppb
2018-07-05	1610-078-1234	ND
2018-07-11	1610-003-1340	4.70 ppb
2018-07-11	1610-008-1000	3.30 ppb
2018-07-18	1610-049-1005	ND
2018-08-01	1610-078-1119	ND
2018-09-04	1610-078-1025	ND
2018-09-11	1610-901-1410	47.1 ppb
2018-09-11	1610-906-0850	48.0 ppb
2018-09-18	1610-902-0825	54.8 ppb
2018-09-18	1610-903-1045	ND
2018-09-18	1610-905-0730	48.6 ppb
2018-09-18	1610-907-0820	36.4 ppb
2018-09-25	1610-900-0945	44.9 ppb
2018-09-25	1610-904-0840	45.6 ppb
2018-10-03	1610-078-1035	ND
2018-10-10	1610-003-1120	1.90 ppb
2018-10-10	1610-008-0900	12.0 ppb
2018-10-10	1610-009-0840	49.0 ppb
2018-11-07	1610-078-1040	ND
2018-12-05	1610-078-1000	ND
2018-12-11	1610-901-0920	28.5 ppb
2018-12-11	1610-906-0950	33.1 ppb
2018-12-18	1610-902-0813	30.0 ppb
2018-12-18	1610-903-1255	3.10 ppb
2018-12-18	1610-905-0733	27.5 ppb
2018-12-18	1610-907-1020	26.1 ppb
2018-12-27	1610-900-0900	29.7 ppb
2018-12-27	1610-904-0851	28.0 ppb
2019-01-02	1610-078-1200	ND
2019-01-08	1610-003-1220	1.70 ppb
2019-01-08	1610-008-1100	5.60 ppb
2019-01-08	1610-009-0950	28.0 ppb
2019-02-06	1610-078-1010	ND
2019-03-06	1610-078-1015	ND
2019-03-12	1610-901-0712	31.7 ppb
2019-03-12	1610-906-1230	32.6 ppb
2019-03-19	1610-902-0905	45.3 ppb
2019-03-19	1610-903-1010	8.06 ppb
2019-03-19	1610-905-0820	45.9 ppb
2019-03-19	1610-907-0725	42.3 ppb
2019-03-26	1610-900-1120	9.29 ppb
2019-03-26	1610-904-1050	48.3 ppb
2019-04-03	1610-078-1010	ND
2019-04-10	1610-003-0820	3.00 ppb
2019-04-10	1610-008-1200	7.40 ppb
2019-04-10	1610-009-0840	54.0 ppb
2019-05-01	1610-078-1010	ND
2019-06-05	1610-078-0930	ND
2019-06-11	1610-901-0920	51.4 ppb
2019-06-11	1610-906-0855	67.5 ppb
2019-06-18	1610-902-0758	76.2 ppb
2019-06-18	1610-903-1010	ND
2019-06-18	1610-905-0725	75.6 ppb
2019-06-18	1610-907-0810	81.2 ppb
2019-06-25	1610-900-0820	43.3 ppb
2019-06-25	1610-904-0845	68.5 ppb
2019-07-03	1610-078-1225	ND
2019-07-03	1610-151-0835	69.0 ppb
2019-07-10	1610-003-1150	3.40 ppb
2019-07-10	1610-008-0930	1.60 ppb
2019-07-10	1610-009-0900	46.0 ppb
2019-07-17	1610-078-0730	ND
2019-08-06	1610-166-1033	ND
2019-08-14	1610-166-0854	ND
2019-08-28	1610-078-0830	ND
2019-09-04	1610-078-0910	ND
2019-09-10	1610-032-1025	19.0 ppb
2019-09-10	1610-132-1045	ND
2019-09-10	1610-901-0758	62.3 ppb
2019-09-10	1610-906-0920	60.9 ppb
2019-09-11	1610-134-1212	ND
2019-09-11	1610-136-1310	9.90 ppb
2019-09-11	1610-166-1120	ND
2019-09-17	1610-902-1200	74.2 ppb
2019-09-17	1610-903-1055	ND
2019-09-17	1610-905-1245	71.0 ppb
2019-09-17	1610-907-0725	47.8 ppb
2019-09-18	1610-042-1125	7.70 ppb
2019-09-24	1610-900-0925	31.8 ppb
2019-09-24	1610-904-1105	76.7 ppb
2019-10-02	1610-078-0955	ND
2019-10-09	1610-003-1050	5.80 ppb
2019-10-09	1610-008-1032	2.10 ppb
2019-10-09	1610-009-1105	47.0 ppb
2019-10-09	1610-166-0952	ND
2019-11-06	1610-078-1200	ND
2019-11-12	1610-166-0918	ND
2019-12-04	1610-078-1015	ND
2019-12-10	1610-901-1030	40.8 ppb
2019-12-10	1610-906-0803	29.9 ppb
2019-12-11	1610-166-1029	ND
2019-12-17	1610-245-0900	ND
2019-12-17	1610-902-1024	44.4 ppb
2019-12-17	1610-903-1035	ND
2019-12-17	1610-905-1050	45.0 ppb
2019-12-17	1610-907-0752	29.1 ppb
2019-12-23	1610-900-0832	26.6 ppb
2019-12-23	1610-904-1100	41.9 ppb