Naphthalene
Signal Hill - City, Water Department
Naphthalene is a polycyclic aromatic hydrocarbon, or PAH, released from combustion of fossil fuels and waste incinerators, and also used as a moth repellent. PAHs increase the risk of cancer; damage the immune, nervous and reproductive systems; and can harm developing fetuses.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 33 | 0 | ND |
2018 | ND | 100 | 0 | ND |
2019 | ND | 137 | 0 | ND |
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-04-21 | 9588-006-1035 | ND |
2014-10-23 | 9588-005-0940 | ND |
2015-04-21 | 9588-006-0943 | ND |
2015-10-22 | 9588-005-1005 | ND |
2016-04-20 | 9588-006-1000 | ND |
2016-10-20 | 9588-005-1110 | ND |
2017-07-05 | 4790-017-1047 | ND |
2017-07-05 | 4790-021-1049 | ND |
2017-07-05 | 4790-022-1052 | ND |
2017-08-01 | 4790-017-1317 | ND |
2017-08-01 | 4790-021-1320 | ND |
2017-08-01 | 4790-022-1322 | ND |
2017-08-22 | 1805-023-1335 | ND |
2017-08-29 | 1805-023-1042 | ND |
2017-09-05 | 1805-021-1226 | ND |
2017-09-05 | 1805-023-1235 | ND |
2017-09-11 | 1805-023-1220 | ND |
2017-09-18 | 1805-023-1250 | ND |
2017-09-25 | 1805-023-1457 | ND |
2017-10-02 | 1805-016-1110 | ND |
2017-10-02 | 1805-021-1116 | ND |
2017-10-02 | 1805-023-1123 | ND |
2017-10-09 | 1805-023-1405 | ND |
2017-10-16 | 1805-023-1150 | ND |
2017-10-19 | 9588-005-1023 | ND |
2017-10-23 | 1805-023-1400 | ND |
2017-10-30 | 1805-023-0800 | ND |
2017-11-06 | 1805-016-0944 | ND |
2017-11-06 | 1805-021-0939 | ND |
2017-11-06 | 1805-023-0952 | ND |
2017-11-13 | 1805-023-0815 | ND |
2017-11-20 | 1805-023-1151 | ND |
2017-11-27 | 1805-023-0825 | ND |
2017-12-04 | 1805-016-0803 | ND |
2017-12-04 | 1805-021-0806 | ND |
2017-12-04 | 1805-023-0830 | ND |
2017-12-11 | 1805-023-0805 | ND |
2017-12-18 | 1805-023-1310 | ND |
2017-12-26 | 1805-023-0930 | ND |
2018-01-02 | 1805-016-0945 | ND |
2018-01-02 | 1805-017-0944 | ND |
2018-01-02 | 1805-021-0949 | ND |
2018-01-02 | 1805-022-0948 | ND |
2018-01-02 | 1805-023-0955 | ND |
2018-01-08 | 1805-023-0850 | ND |
2018-01-16 | 1805-023-1215 | ND |
2018-01-22 | 1805-023-0905 | ND |
2018-01-29 | 1805-023-0755 | ND |
2018-02-05 | 1805-016-1212 | ND |
2018-02-05 | 1805-017-1210 | ND |
2018-02-05 | 1805-021-1216 | ND |
2018-02-05 | 1805-022-1214 | ND |
2018-02-05 | 1805-023-1220 | ND |
2018-02-12 | 1805-023-0830 | ND |
2018-02-20 | 1805-023-0800 | ND |
2018-02-26 | 1805-023-0838 | ND |
2018-03-05 | 1805-016-0840 | ND |
2018-03-05 | 1805-017-0842 | ND |
2018-03-05 | 1805-021-0844 | ND |
2018-03-05 | 1805-022-0846 | ND |
2018-03-05 | 1805-023-0850 | ND |
2018-03-05 | 1805-023-1220 | ND |
2018-03-12 | 1805-023-1228 | ND |
2018-03-19 | 1805-023-0918 | ND |
2018-03-26 | 1805-023-0835 | ND |
2018-04-02 | 1805-016-0756 | ND |
2018-04-02 | 1805-017-0758 | ND |
2018-04-02 | 1805-021-0801 | ND |
2018-04-02 | 1805-022-0804 | ND |
2018-04-02 | 1805-023-0807 | ND |
2018-04-09 | 1805-023-0805 | ND |
2018-04-16 | 1805-023-0740 | ND |
2018-04-23 | 1805-023-0755 | ND |
2018-04-30 | 1805-023-0735 | ND |
2018-05-07 | 1805-016-0922 | ND |
2018-05-07 | 1805-017-0925 | ND |
2018-05-07 | 1805-021-0928 | ND |
2018-05-07 | 1805-022-0930 | ND |
2018-05-07 | 1805-023-0915 | ND |
2018-05-14 | 1805-023-0745 | ND |
2018-05-21 | 1805-023-0748 | ND |
2018-05-29 | 1805-023-0745 | ND |
2018-06-04 | 1805-016-0840 | ND |
2018-06-04 | 1805-017-0842 | ND |
2018-06-04 | 1805-021-0844 | ND |
2018-06-04 | 1805-022-0846 | ND |
2018-06-04 | 1805-023-0857 | ND |
2018-06-11 | 1805-023-0920 | ND |
2018-06-18 | 1805-023-0740 | ND |
2018-06-25 | 1805-023-0727 | ND |
2018-07-02 | 1805-016-0823 | ND |
2018-07-02 | 1805-017-0825 | ND |
2018-07-02 | 1805-021-0828 | ND |
2018-07-02 | 1805-022-0832 | ND |
2018-07-02 | 1805-023-0835 | ND |
2018-07-09 | 1805-023-0745 | ND |
2018-07-16 | 1805-023-0718 | ND |
2018-07-23 | 1805-023-0745 | ND |
2018-07-30 | 1805-023-1155 | ND |
2018-08-06 | 1805-016-0826 | ND |
2018-08-06 | 1805-021-0830 | ND |
2018-08-06 | 1805-023-0836 | ND |
2018-08-15 | 1805-023-0730 | ND |
2018-08-20 | 1805-023-1325 | ND |
2018-08-27 | 1805-023-0740 | ND |
2018-09-04 | 1805-016-0805 | ND |
2018-09-04 | 1805-017-0807 | ND |
2018-09-04 | 1805-021-0809 | ND |
2018-09-04 | 1805-022-0811 | ND |
2018-09-04 | 1805-023-0815 | ND |
2018-09-10 | 1805-023-0945 | ND |
2018-09-17 | 1805-023-0735 | ND |
2018-09-24 | 1805-023-0745 | ND |
2018-10-01 | 1805-016-0813 | ND |
2018-10-01 | 1805-017-0816 | ND |
2018-10-01 | 1805-021-0820 | ND |
2018-10-01 | 1805-022-0823 | ND |
2018-10-01 | 1805-023-0810 | ND |
2018-10-08 | 1805-023-0900 | ND |
2018-10-15 | 1805-023-0740 | ND |
2018-10-18 | 9588-005-1015 | ND |
2018-10-22 | 1805-023-0958 | ND |
2018-10-29 | 1805-023-0745 | ND |
2018-11-05 | 1805-016-0820 | ND |
2018-11-05 | 1805-017-0822 | ND |
2018-11-05 | 1805-021-0824 | ND |
2018-11-05 | 1805-022-0826 | ND |
2018-11-05 | 1805-023-0830 | ND |
2018-11-13 | 1805-023-0805 | ND |
2018-11-19 | 1805-023-0912 | ND |
2018-11-26 | 1805-023-0730 | ND |
2018-12-03 | 1805-016-0847 | ND |
2018-12-03 | 1805-017-0845 | ND |
2018-12-03 | 1805-021-0851 | ND |
2018-12-03 | 1805-022-0849 | ND |
2018-12-03 | 1805-023-0854 | ND |
2018-12-10 | 1805-023-0745 | ND |
2018-12-17 | 1805-023-0911 | ND |
2018-12-26 | 1805-023-0805 | ND |
2019-01-02 | 1805-016-0820 | ND |
2019-01-02 | 1805-017-0823 | ND |
2019-01-02 | 1805-021-0828 | ND |
2019-01-02 | 1805-022-0831 | ND |
2019-01-02 | 1805-023-0836 | ND |
2019-01-07 | 1805-023-0815 | ND |
2019-01-14 | 1805-023-0802 | ND |
2019-01-22 | 1805-023-0820 | ND |
2019-01-28 | 1805-023-0740 | ND |
2019-02-04 | 1805-016-0837 | ND |
2019-02-04 | 1805-017-0829 | ND |
2019-02-04 | 1805-021-0832 | ND |
2019-02-04 | 1805-022-0834 | ND |
2019-02-04 | 1805-023-0850 | ND |
2019-02-11 | 1805-023-0900 | ND |
2019-02-19 | 1805-023-0850 | ND |
2019-02-25 | 1805-023-0735 | ND |
2019-03-04 | 1805-016-1400 | ND |
2019-03-04 | 1805-017-1403 | ND |
2019-03-04 | 1805-021-1406 | ND |
2019-03-04 | 1805-022-1409 | ND |
2019-03-04 | 1805-023-1412 | ND |
2019-03-11 | 1805-023-0820 | ND |
2019-03-18 | 1805-023-0838 | ND |
2019-03-25 | 1805-023-0832 | ND |
2019-04-01 | 1805-016-1323 | ND |
2019-04-01 | 1805-017-1325 | ND |
2019-04-01 | 1805-021-1328 | ND |
2019-04-01 | 1805-022-1332 | ND |
2019-04-01 | 1805-023-1315 | ND |
2019-04-08 | 1805-023-0810 | ND |
2019-04-15 | 1805-023-0825 | ND |
2019-04-22 | 1805-023-0740 | ND |
2019-04-29 | 1805-023-0815 | ND |
2019-05-06 | 1805-016-0720 | ND |
2019-05-06 | 1805-017-0723 | ND |
2019-05-06 | 1805-021-0727 | ND |
2019-05-06 | 1805-022-0730 | ND |
2019-05-06 | 1805-023-0735 | ND |
2019-05-13 | 1805-023-0740 | ND |
2019-05-20 | 1805-023-1036 | ND |
2019-05-28 | 1805-017-0908 | ND |
2019-05-28 | 1805-022-0912 | ND |
2019-05-28 | 1805-023-0905 | ND |
2019-06-03 | 1805-017-0910 | ND |
2019-06-03 | 1805-022-0915 | ND |
2019-06-03 | 1805-023-0920 | ND |
2019-06-10 | 1805-017-0830 | ND |
2019-06-10 | 1805-022-0832 | ND |
2019-06-10 | 1805-023-0835 | ND |
2019-06-17 | 1805-017-0822 | ND |
2019-06-17 | 1805-022-0825 | ND |
2019-06-17 | 1805-023-0820 | ND |
2019-06-24 | 1805-017-0927 | ND |
2019-06-24 | 1805-022-0930 | ND |
2019-06-24 | 1805-023-0924 | ND |
2019-07-01 | 1805-017-0933 | ND |
2019-07-01 | 1805-022-0936 | ND |
2019-07-01 | 1805-023-0940 | ND |
2019-07-08 | 1805-017-0820 | ND |
2019-07-08 | 1805-022-0823 | ND |
2019-07-08 | 1805-023-0827 | ND |
2019-07-15 | 1805-017-0753 | ND |
2019-07-15 | 1805-022-0757 | ND |
2019-07-15 | 1805-023-0750 | ND |
2019-07-22 | 1805-017-0805 | ND |
2019-07-22 | 1805-022-0810 | ND |
2019-07-22 | 1805-023-0815 | ND |
2019-07-29 | 1805-017-0830 | ND |
2019-07-29 | 1805-022-0835 | ND |
2019-07-29 | 1805-023-0840 | ND |
2019-08-05 | 1805-017-0845 | ND |
2019-08-05 | 1805-022-0848 | ND |
2019-08-12 | 1805-017-1205 | ND |
2019-08-12 | 1805-022-1205 | ND |
2019-08-12 | 1805-023-1205 | ND |
2019-08-19 | 1805-017-0830 | ND |
2019-08-19 | 1805-022-0832 | ND |
2019-08-19 | 1805-023-0834 | ND |
2019-08-26 | 1805-017-1115 | ND |
2019-08-26 | 1805-022-1118 | ND |
2019-08-26 | 1805-023-1123 | ND |
2019-09-03 | 1805-017-0935 | ND |
2019-09-03 | 1805-022-0940 | ND |
2019-09-03 | 1805-023-0945 | ND |
2019-09-09 | 1805-017-0820 | ND |
2019-09-09 | 1805-022-0820 | ND |
2019-09-09 | 1805-023-0815 | ND |
2019-09-16 | 1805-017-0815 | ND |
2019-09-16 | 1805-022-0818 | ND |
2019-09-16 | 1805-023-0823 | ND |
2019-09-23 | 1805-017-0820 | ND |
2019-09-23 | 1805-022-0822 | ND |
2019-09-23 | 1805-023-0825 | ND |
2019-09-30 | 1805-017-0855 | ND |
2019-09-30 | 1805-022-0858 | ND |
2019-09-30 | 1805-023-0900 | ND |
2019-10-07 | 1805-017-0905 | ND |
2019-10-07 | 1805-022-0907 | ND |
2019-10-07 | 1805-023-0910 | ND |
2019-10-14 | 1805-017-0918 | ND |
2019-10-14 | 1805-022-0920 | ND |
2019-10-14 | 1805-023-0915 | ND |
2019-10-21 | 1805-017-0855 | ND |
2019-10-21 | 1805-022-0858 | ND |
2019-10-21 | 1805-023-0902 | ND |
2019-10-24 | 9588-005-0924 | ND |
2019-10-28 | 1805-017-0915 | ND |
2019-10-28 | 1805-022-0918 | ND |
2019-10-28 | 1805-023-0922 | ND |
2019-11-04 | 1805-017-0942 | ND |
2019-11-04 | 1805-022-0945 | ND |
2019-11-04 | 1805-023-0947 | ND |
2019-11-12 | 1805-017-0845 | ND |
2019-11-12 | 1805-022-0847 | ND |
2019-11-12 | 1805-023-0850 | ND |
2019-11-18 | 1805-017-0835 | ND |
2019-11-18 | 1805-022-0838 | ND |
2019-11-18 | 1805-023-0842 | ND |
2019-11-25 | 1805-017-0815 | ND |
2019-11-25 | 1805-022-0818 | ND |
2019-11-25 | 1805-023-0810 | ND |
2019-12-02 | 1805-017-1215 | ND |
2019-12-02 | 1805-022-1218 | ND |
2019-12-02 | 1805-023-1222 | ND |
2019-12-09 | 1805-017-0810 | ND |
2019-12-09 | 1805-022-0813 | ND |
2019-12-09 | 1805-023-0816 | ND |
2019-12-16 | 1805-017-0842 | ND |
2019-12-16 | 1805-022-0845 | ND |
2019-12-16 | 1805-023-0839 | ND |
2019-12-23 | 1805-017-0903 | ND |
2019-12-23 | 1805-022-0905 | ND |
2019-12-23 | 1805-023-0908 | ND |
2019-12-30 | 1805-017-0950 | ND |
2019-12-30 | 1805-022-0958 | ND |
2019-12-30 | 1805-023-1000 | ND |