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EWG's Tap Water Database — 2021 UPDATE

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Dichlorodifluoromethane

California Water Service - Livermore

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.

MORE ABOUT THIS CONTAMINANT

 

375

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.682 ppb7236ND - 5.11 ppb
20150.978 ppb5646ND - 4.38 ppb
20160.762 ppb6038ND - 1.90 ppb
20170.823 ppb4335ND - 1.94 ppb
20180.372 ppb7734ND - 1.50 ppb
20190.522 ppb6740ND - 2.40 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-225701-010-1405ND
2014-01-225701-024-1415ND
2014-01-225701-025-1410ND
2014-01-235701-006-1303ND
2014-01-235701-007-10200.540 ppb
2014-02-255701-010-1032ND
2014-02-255701-024-10470.530 ppb
2014-02-255701-025-1045ND
2014-03-165701-010-13520.650 ppb
2014-03-165701-024-14000.650 ppb
2014-03-165701-025-14050.510 ppb
2014-04-215701-008-10250.920 ppb
2014-04-215701-022-1035ND
2014-04-215701-023-1040ND
2014-04-235701-010-11250.600 ppb
2014-04-235701-024-11200.600 ppb
2014-04-235701-025-11230.580 ppb
2014-04-245701-006-1625ND
2014-04-245701-021-14205.11 ppb
2014-05-135701-010-1343ND
2014-05-135701-024-1344ND
2014-05-135701-025-13360.520 ppb
2014-05-275701-008-10101.11 ppb
2014-05-275701-022-1017ND
2014-05-275701-023-1025ND
2014-06-105701-010-1117ND
2014-06-105701-024-1138ND
2014-06-105701-025-1133ND
2014-06-125701-008-12310.760 ppb
2014-06-125701-022-1248ND
2014-06-125701-023-1239ND
2014-07-105701-008-09591.06 ppb
2014-07-105701-010-1127ND
2014-07-105701-022-1016ND
2014-07-105701-023-10080.840 ppb
2014-07-105701-024-1141ND
2014-07-105701-025-1132ND
2014-07-235701-006-1545ND
2014-07-235701-021-15262.93 ppb
2014-08-065701-008-10421.26 ppb
2014-08-069590-010-1120ND
2014-08-065701-022-1055ND
2014-08-065701-023-10491.15 ppb
2014-08-069590-024-1135ND
2014-08-069590-025-1127ND
2014-09-115701-008-11311.62 ppb
2014-09-115701-010-1545ND
2014-09-115701-022-11391.35 ppb
2014-09-115701-023-11351.55 ppb
2014-09-115701-024-1554ND
2014-09-115701-025-15500.510 ppb
2014-10-159590-008-10351.10 ppb
2014-10-155701-010-09490.990 ppb
2014-10-159590-022-10441.000 ppb
2014-10-159590-023-10391.10 ppb
2014-10-155701-024-09561.14 ppb
2014-10-155701-025-10001.19 ppb
2014-10-275701-021-14184.24 ppb
2014-11-055701-008-10111.12 ppb
2014-11-055701-010-1242ND
2014-11-055701-022-10001.46 ppb
2014-11-055701-023-10051.40 ppb
2014-11-055701-024-1251ND
2014-11-055701-025-1257ND
2014-12-105701-010-1220ND
2014-12-105701-024-1229ND
2014-12-105701-025-1224ND
2014-12-155701-006-1650ND
2014-12-175701-008-12081.56 ppb
2014-12-175701-022-12121.74 ppb
2014-12-175701-023-12181.53 ppb
2014-12-189590-009-13554.20 ppb
2015-01-135701-008-14250.860 ppb
2015-01-135701-022-14001.27 ppb
2015-01-135701-023-14050.990 ppb
2015-01-215701-010-1320ND
2015-01-215701-024-13270.580 ppb
2015-01-215701-025-13280.600 ppb
2015-01-275701-006-1602ND
2015-01-275701-021-14263.72 ppb
2015-02-185701-008-16501.31 ppb
2015-02-185701-022-16531.11 ppb
2015-02-185701-023-16521.04 ppb
2015-02-245701-010-1324ND
2015-02-245701-024-1350ND
2015-02-245701-025-13450.510 ppb
2015-03-165701-008-15231.06 ppb
2015-03-165701-010-16000.520 ppb
2015-03-165701-022-15301.03 ppb
2015-03-165701-023-15351.07 ppb
2015-03-165701-024-1611ND
2015-03-165701-025-1605ND
2015-04-145701-008-10401.11 ppb
2015-04-145701-010-14200.520 ppb
2015-04-145701-022-11121.26 ppb
2015-04-145701-023-11071.17 ppb
2015-04-145701-024-14370.710 ppb
2015-04-145701-025-14290.650 ppb
2015-04-275701-006-1341ND
2015-05-129590-008-12150.800 ppb
2015-05-129590-022-12260.900 ppb
2015-05-129590-023-12210.780 ppb
2015-05-185701-009-11054.38 ppb
2015-06-085701-008-11001.03 ppb
2015-06-085701-022-11101.14 ppb
2015-06-085701-023-11060.980 ppb
2015-07-075701-008-12481.28 ppb
2015-07-075701-022-12591.43 ppb
2015-07-075701-023-13031.35 ppb
2015-07-215701-006-1050ND
2015-08-105701-008-12590.910 ppb
2015-08-105701-022-13081.16 ppb
2015-08-105701-023-13041.05 ppb
2015-09-095701-008-12051.36 ppb
2015-09-095701-022-12161.28 ppb
2015-09-095701-023-12131.22 ppb
2015-10-145701-008-09300.830 ppb
2015-10-145701-022-09501.01 ppb
2015-10-145701-023-09440.960 ppb
2015-10-195701-006-1115ND
2015-10-195701-021-10161.79 ppb
2015-11-095701-008-11421.33 ppb
2015-11-095701-022-11511.15 ppb
2015-11-095701-023-11501.20 ppb
2015-12-095701-014-1120ND
2015-12-155701-008-15351.36 ppb
2015-12-155701-022-15151.56 ppb
2015-12-155701-023-15201.44 ppb
2016-01-135701-008-11001.18 ppb
2016-01-135701-022-11101.30 ppb
2016-01-135701-023-11121.30 ppb
2016-01-205701-021-09051.34 ppb
2016-02-115701-008-14001.08 ppb
2016-02-115701-022-14031.18 ppb
2016-02-115701-023-14021.10 ppb
2016-03-155701-008-10151.55 ppb
2016-03-155701-022-10101.41 ppb
2016-03-155701-023-10051.42 ppb
2016-04-045701-008-09500.740 ppb
2016-04-045701-022-09580.930 ppb
2016-04-045701-023-09560.800 ppb
2016-04-185701-021-11411.90 ppb
2016-05-045701-008-14301.18 ppb
2016-05-045701-022-14411.04 ppb
2016-05-045701-023-14471.01 ppb
2016-05-235701-010-1102ND
2016-05-235701-024-10590.520 ppb
2016-05-235701-025-1100ND
2016-07-065701-010-1317ND
2016-07-065701-024-1328ND
2016-07-065701-025-1323ND
2016-07-135701-008-15301.35 ppb
2016-07-135701-022-15351.12 ppb
2016-07-135701-023-15450.990 ppb
2016-07-205701-006-1135ND
2016-07-205701-015-1120ND
2016-07-205701-021-11051.37 ppb
2016-08-035701-008-14171.04 ppb
2016-08-035701-010-1440ND
2016-08-035701-022-14151.09 ppb
2016-08-035701-023-14161.12 ppb
2016-08-035701-024-1442ND
2016-08-035701-025-1441ND
2016-09-135701-008-13551.23 ppb
2016-09-135701-010-1115ND
2016-09-135701-022-13471.23 ppb
2016-09-135701-023-13501.23 ppb
2016-09-135701-024-1130ND
2016-09-135701-025-1118ND
2016-10-135701-008-15201.28 ppb
2016-10-135701-010-1042ND
2016-10-135701-022-15301.18 ppb
2016-10-135701-023-15291.15 ppb
2016-10-135701-024-1050ND
2016-10-135701-025-1055ND
2016-10-255701-021-15271.44 ppb
2016-11-155701-008-15401.05 ppb
2016-11-155701-010-1415ND
2016-11-155701-022-15151.11 ppb
2016-11-155701-023-15251.08 ppb
2016-11-155701-024-1357ND
2016-11-155701-025-1351ND
2016-12-135701-008-11191.60 ppb
2016-12-135810-010-1305ND
2016-12-135701-022-11171.67 ppb
2016-12-135701-023-11181.43 ppb
2016-12-135810-024-1307ND
2016-12-135810-025-1306ND
2017-01-175701-008-10070.930 ppb
2017-01-175701-022-10090.910 ppb
2017-01-175701-023-10080.910 ppb
2017-01-255701-021-1140ND
2017-02-079590-008-14120.940 ppb
2017-02-079590-022-14111.20 ppb
2017-02-079590-023-14111.10 ppb
2017-03-075701-008-14200.940 ppb
2017-03-075701-022-14071.000 ppb
2017-03-075701-023-14120.950 ppb
2017-04-195701-008-15320.820 ppb
2017-04-195701-021-1547ND
2017-04-195701-022-15300.920 ppb
2017-04-195701-023-15320.910 ppb
2017-05-095701-008-15421.07 ppb
2017-05-095701-022-15291.15 ppb
2017-05-095701-023-15251.16 ppb
2017-05-155701-008-14501.03 ppb
2017-05-155701-022-14551.18 ppb
2017-06-145701-008-10460.940 ppb
2017-06-145701-022-10421.16 ppb
2017-06-145701-023-10430.990 ppb
2017-07-115701-008-10310.780 ppb
2017-07-115701-022-10280.990 ppb
2017-07-115701-023-10290.960 ppb
2017-07-255701-021-13441.94 ppb
2017-08-095701-008-15201.41 ppb
2017-08-095701-022-15101.21 ppb
2017-08-095701-023-15151.20 ppb
2017-09-125701-008-10130.900 ppb
2017-09-125701-022-10110.970 ppb
2017-09-125701-023-10120.930 ppb
2017-10-105701-008-12310.720 ppb
2017-10-105701-022-12290.770 ppb
2017-10-105701-023-12300.650 ppb
2017-10-235701-021-13100.770 ppb
2017-11-145810-008-13051.000 ppb
2017-11-145810-022-1315ND
2017-11-145810-023-1310ND
2017-12-125701-008-0948ND
2017-12-125701-022-0946ND
2017-12-125701-023-0947ND
2017-12-189590-007-1359ND
2018-01-055701-010-1350ND
2018-01-055701-024-1351ND
2018-01-055701-025-1350ND
2018-01-245701-021-1312ND
2018-01-295701-022-1045ND
2018-01-295701-023-1046ND
2018-02-135701-008-11170.710 ppb
2018-02-135701-022-1115ND
2018-02-135701-023-1116ND
2018-02-215701-010-1750ND
2018-02-215701-024-1800ND
2018-02-215701-025-1755ND
2018-03-065701-008-09300.710 ppb
2018-03-065701-010-1150ND
2018-03-065701-022-0929ND
2018-03-065701-023-0927ND
2018-03-065701-024-1200ND
2018-03-065701-025-1155ND
2018-03-225701-008-09500.520 ppb
2018-03-225701-022-0940ND
2018-03-225701-023-0930ND
2018-04-125810-008-13300.790 ppb
2018-04-125810-010-1301ND
2018-04-125810-022-13361.000 ppb
2018-04-125810-023-1333ND
2018-04-125810-024-1305ND
2018-04-125810-025-1303ND
2018-05-019590-021-14381.50 ppb
2018-05-175701-008-09260.740 ppb
2018-05-175701-022-09320.910 ppb
2018-05-175701-023-0930ND
2018-06-115701-008-16000.660 ppb
2018-06-115701-010-1548ND
2018-06-115701-022-15570.880 ppb
2018-06-115701-023-15581.02 ppb
2018-06-115701-024-1549ND
2018-06-115701-025-1546ND
2018-06-129590-021-1355ND
2018-07-025810-008-11340.600 ppb
2018-07-025810-022-11360.750 ppb
2018-07-025810-023-11400.890 ppb
2018-07-115810-010-1356ND
2018-07-115810-024-1400ND
2018-07-115810-025-1402ND
2018-07-245701-014-0917ND
2018-07-245701-021-08501.47 ppb
2018-08-135701-008-14200.620 ppb
2018-08-135701-022-14260.670 ppb
2018-08-135701-023-14230.650 ppb
2018-08-145701-010-1016ND
2018-08-145701-024-1020ND
2018-08-145701-025-1022ND
2018-09-115701-008-10020.850 ppb
2018-09-115701-022-10090.890 ppb
2018-09-115701-023-10060.820 ppb
2018-09-125701-010-1418ND
2018-09-125701-024-1422ND
2018-09-125701-025-14240.550 ppb
2018-10-115701-008-13150.740 ppb
2018-10-115701-010-1340ND
2018-10-115701-022-13210.820 ppb
2018-10-115701-023-13190.780 ppb
2018-10-115701-024-1344ND
2018-10-115701-025-1346ND
2018-10-165810-021-13371.40 ppb
2018-11-155701-008-15000.990 ppb
2018-11-155701-010-09000.500 ppb
2018-11-155701-022-15061.07 ppb
2018-11-155701-023-15041.06 ppb
2018-11-155701-024-0904ND
2018-11-155701-025-09060.540 ppb
2018-12-115810-008-15150.870 ppb
2018-12-115810-022-14520.840 ppb
2018-12-115810-023-14580.850 ppb
2018-12-125810-010-1314ND
2018-12-125810-024-1326ND
2018-12-125810-025-1329ND
2019-01-085810-008-13450.930 ppb
2019-01-085810-010-09550.570 ppb
2019-01-085810-022-14050.890 ppb
2019-01-085810-023-14000.960 ppb
2019-01-085810-024-10100.550 ppb
2019-01-085810-025-10050.550 ppb
2019-01-239590-021-11501.30 ppb
2019-02-135701-008-13580.760 ppb
2019-02-135701-010-1325ND
2019-02-135701-022-14060.670 ppb
2019-02-135701-023-14040.760 ppb
2019-02-135701-024-1331ND
2019-02-135701-025-1329ND
2019-03-125701-008-14390.790 ppb
2019-03-125701-022-14490.920 ppb
2019-03-125701-023-14440.770 ppb
2019-04-045810-013-12502.40 ppb
2019-04-165701-008-12330.630 ppb
2019-04-165701-022-12400.680 ppb
2019-04-165701-023-12370.770 ppb
2019-04-295701-021-09281.40 ppb
2019-05-155701-008-14580.720 ppb
2019-05-155701-010-1233ND
2019-05-155701-022-15060.590 ppb
2019-05-155701-023-15020.790 ppb
2019-05-155701-024-1238ND
2019-05-155701-025-1235ND
2019-06-125701-008-09490.620 ppb
2019-06-125701-022-10560.760 ppb
2019-06-125701-023-10530.780 ppb
2019-07-025701-010-1550ND
2019-07-025701-024-1611ND
2019-07-025701-025-1559ND
2019-07-115701-008-14120.850 ppb
2019-07-115701-010-0958ND
2019-07-115701-022-14170.660 ppb
2019-07-115701-023-14190.770 ppb
2019-07-115701-024-1010ND
2019-07-115701-025-1006ND
2019-07-245701-021-14521.90 ppb
2019-08-155701-008-14320.840 ppb
2019-08-155701-010-1409ND
2019-08-155701-022-14430.860 ppb
2019-08-155701-023-14390.920 ppb
2019-08-155701-024-1416ND
2019-08-155701-025-1420ND
2019-09-125701-008-14000.890 ppb
2019-09-125701-010-1120ND
2019-09-125701-022-13300.890 ppb
2019-09-125701-023-13331.02 ppb
2019-09-125701-024-1128ND
2019-09-125701-025-11250.550 ppb
2019-10-025701-008-09550.780 ppb
2019-10-025701-010-0901ND
2019-10-025701-022-10040.710 ppb
2019-10-025701-023-09580.640 ppb
2019-10-025701-024-0908ND
2019-10-025701-025-0905ND
2019-10-165701-021-10241.61 ppb
2019-10-305701-015-1151ND
2019-11-135701-010-1109ND
2019-11-135701-024-1114ND
2019-11-135701-025-1111ND
2019-12-105701-015-1320ND
2019-12-185701-010-1148ND
2019-12-185701-024-11520.500 ppb
2019-12-185701-025-1155ND