Perchlorate
La Verne WD
Perchlorate, a component of rocket fuel, occurs both naturally and as a synthetic chemical. Ingested perchlorate interferes with thyroid function. Exposure to perchlorate during pregnancy and childhood can impair cognitive development. Read More.
According to the EPA, perchlorate likely contaminates the water of more than 16 million Americans. Perchlorate interferes with iodine uptake in the thyroid, which can result in reduced thyroid hormones and an impact on metabolism, physical development and cognitive development. Children and developing fetuses are the most at risk from perchlorate contamination.
Perchlorate is the only unregulated contaminant for which the EPA has attempted to set a federal drinking water standard since 1996. However, the agency has yet to propose a draft limit for this contaminant. Perchlorate in drinking water is regulated in Arizona, California, Massachusetts, New Jersey, New York and Texas. California set a public health goal of 1 part per billion for perchlorate in 2015.
478
Samples
0
Samples exceeding legal limit (MCL)
377
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 7.23 ppb | 69 | 57 | ND - 18.0 ppb |
| 2015 | 5.85 ppb | 73 | 57 | ND - 17.0 ppb |
| 2016 | 6.11 ppb | 70 | 49 | ND - 16.0 ppb |
| 2017 | 7.70 ppb | 87 | 74 | ND - 21.0 ppb |
| 2018 | 7.64 ppb | 89 | 73 | ND - 22.0 ppb |
| 2019 | 7.06 ppb | 90 | 67 | ND - 21.0 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 1 ppb
The EWG Health Guideline of 1 ppb for perchlorate was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hormone disruption.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-02 | 4790-009-0925 | ND |
| 2014-01-02 | 4790-010-0932 | 5.80 ppb |
| 2014-01-02 | 4790-016-0745 | 12.0 ppb |
| 2014-01-02 | 4790-039-0806 | 5.10 ppb |
| 2014-01-22 | 4790-008-0910 | ND |
| 2014-02-05 | 4790-008-1047 | 5.30 ppb |
| 2014-02-05 | 4790-010-1035 | 6.60 ppb |
| 2014-02-12 | 4790-012-1013 | 12.0 ppb |
| 2014-02-12 | 4790-046-0953 | 18.0 ppb |
| 2014-02-13 | 4790-016-0816 | 11.0 ppb |
| 2014-02-19 | 4790-039-0846 | 5.70 ppb |
| 2014-02-20 | 4790-009-1021 | ND |
| 2014-02-20 | 4790-032-0930 | 7.30 ppb |
| 2014-03-05 | 4790-009-1115 | ND |
| 2014-03-05 | 4790-010-1104 | 7.00 ppb |
| 2014-03-05 | 4790-012-0635 | 11.0 ppb |
| 2014-03-05 | 4790-016-1040 | 11.0 ppb |
| 2014-03-12 | 4790-046-1139 | 16.0 ppb |
| 2014-03-19 | 4790-032-1143 | 4.90 ppb |
| 2014-03-19 | 4790-039-0716 | 4.60 ppb |
| 2014-04-02 | 4790-008-1031 | 8.00 ppb |
| 2014-04-02 | 4790-010-1023 | 9.40 ppb |
| 2014-04-02 | 4790-016-0610 | 16.0 ppb |
| 2014-04-02 | 4790-039-0942 | 8.10 ppb |
| 2014-04-16 | 4790-009-1021 | ND |
| 2014-05-07 | 4790-008-1050 | 6.00 ppb |
| 2014-05-07 | 4790-010-1036 | 7.80 ppb |
| 2014-05-07 | 4790-016-0734 | 12.0 ppb |
| 2014-05-14 | 4790-009-0839 | ND |
| 2014-05-14 | 4790-012-0555 | 14.0 ppb |
| 2014-05-14 | 4790-032-0830 | 6.90 ppb |
| 2014-05-14 | 4790-039-0653 | 6.80 ppb |
| 2014-05-28 | 4790-046-1015 | 15.0 ppb |
| 2014-06-04 | 4790-008-1027 | 4.20 ppb |
| 2014-06-04 | 4790-010-1054 | 6.70 ppb |
| 2014-06-04 | 4790-012-0847 | 12.0 ppb |
| 2014-06-04 | 4790-032-1047 | 4.90 ppb |
| 2014-06-04 | 4790-039-0935 | 5.30 ppb |
| 2014-06-18 | 4790-009-0927 | ND |
| 2014-07-02 | 4790-012-0550 | 12.0 ppb |
| 2014-07-02 | 4790-032-0909 | 6.30 ppb |
| 2014-07-02 | 4790-039-0749 | 6.80 ppb |
| 2014-07-09 | 4790-008-1024 | 5.80 ppb |
| 2014-07-09 | 4790-010-1011 | 8.10 ppb |
| 2014-07-09 | 4790-016-0638 | 10.00 ppb |
| 2014-08-06 | 4790-008-1010 | ND |
| 2014-08-06 | 4790-009-1019 | ND |
| 2014-08-06 | 4790-010-1000 | 5.10 ppb |
| 2014-08-06 | 4790-016-0750 | 11.0 ppb |
| 2014-08-06 | 4790-032-1123 | 6.70 ppb |
| 2014-08-06 | 4790-039-0830 | 7.50 ppb |
| 2014-08-27 | 4790-046-1113 | 15.0 ppb |
| 2014-09-03 | 4790-008-1007 | 6.20 ppb |
| 2014-09-03 | 4790-010-1020 | 7.70 ppb |
| 2014-09-03 | 4790-016-0637 | 12.0 ppb |
| 2014-09-24 | 4790-039-1128 | 7.60 ppb |
| 2014-10-01 | 4790-009-1030 | ND |
| 2014-10-01 | 4790-010-1036 | 8.00 ppb |
| 2014-10-01 | 4790-016-0825 | 12.0 ppb |
| 2014-10-01 | 4790-039-0913 | 7.80 ppb |
| 2014-10-08 | 4790-008-0942 | 5.40 ppb |
| 2014-11-19 | 4790-012-1121 | 11.0 ppb |
| 2014-12-03 | 4790-032-0958 | 6.30 ppb |
| 2014-12-03 | 4790-039-0840 | 6.10 ppb |
| 2014-12-10 | 4790-008-0921 | ND |
| 2014-12-10 | 4790-009-0923 | ND |
| 2014-12-10 | 4790-010-0905 | 6.40 ppb |
| 2014-12-10 | 4790-016-1013 | 11.0 ppb |
| 2014-12-17 | 4790-012-0712 | 11.0 ppb |
| 2015-01-07 | 4790-009-1144 | ND |
| 2015-01-07 | 4790-012-1116 | 12.0 ppb |
| 2015-01-07 | 4790-032-1155 | 6.50 ppb |
| 2015-01-14 | 4790-008-0957 | 5.40 ppb |
| 2015-02-04 | 4790-008-1124 | 4.20 ppb |
| 2015-02-04 | 4790-010-1117 | 4.50 ppb |
| 2015-02-04 | 4790-012-0820 | 9.50 ppb |
| 2015-02-25 | 4790-032-1250 | 5.40 ppb |
| 2015-02-25 | 4790-046-1315 | 13.0 ppb |
| 2015-03-04 | 4790-009-1008 | ND |
| 2015-03-04 | 4790-010-1003 | ND |
| 2015-03-04 | 4790-016-0815 | 6.00 ppb |
| 2015-03-26 | 4790-032-0927 | 6.90 ppb |
| 2015-03-26 | 4790-039-0810 | 6.80 ppb |
| 2015-04-01 | 4790-008-1020 | 4.20 ppb |
| 2015-04-01 | 4790-010-1007 | 6.20 ppb |
| 2015-04-01 | 4790-016-0727 | 11.0 ppb |
| 2015-04-01 | 4790-032-1032 | 6.60 ppb |
| 2015-04-08 | 4790-039-0908 | 5.90 ppb |
| 2015-04-15 | 4790-046-1119 | 17.0 ppb |
| 2015-05-06 | 4790-008-1040 | ND |
| 2015-05-06 | 4790-009-1042 | ND |
| 2015-05-06 | 4790-010-1028 | 6.40 ppb |
| 2015-05-06 | 4790-016-0546 | 9.70 ppb |
| 2015-05-13 | 4790-032-1055 | 5.70 ppb |
| 2015-05-27 | 4790-012-0630 | 11.0 ppb |
| 2015-05-27 | 4790-039-0715 | 5.90 ppb |
| 2015-05-27 | 4790-046-1212 | 13.0 ppb |
| 2015-06-03 | 4790-008-1021 | 5.10 ppb |
| 2015-06-03 | 4790-009-1023 | ND |
| 2015-06-03 | 4790-010-1032 | 5.80 ppb |
| 2015-06-03 | 4790-012-0645 | 8.50 ppb |
| 2015-06-03 | 4790-039-0738 | 5.00 ppb |
| 2015-06-03 | 4790-045-0956 | ND |
| 2015-06-10 | 4790-045-1022 | ND |
| 2015-06-17 | 4790-045-0955 | ND |
| 2015-06-24 | 4790-045-1016 | ND |
| 2015-07-01 | 4790-008-1105 | 4.30 ppb |
| 2015-07-01 | 4790-009-1107 | ND |
| 2015-07-01 | 4790-010-1057 | 4.90 ppb |
| 2015-07-01 | 4790-012-0839 | 9.90 ppb |
| 2015-07-01 | 4790-032-1024 | 4.90 ppb |
| 2015-07-01 | 4790-039-0913 | 5.00 ppb |
| 2015-08-05 | 4790-008-1041 | 4.20 ppb |
| 2015-08-05 | 4790-009-1047 | ND |
| 2015-08-05 | 4790-010-1025 | 5.00 ppb |
| 2015-08-05 | 4790-012-0635 | 8.90 ppb |
| 2015-08-12 | 4790-032-1004 | 4.50 ppb |
| 2015-08-12 | 4790-039-0909 | 5.20 ppb |
| 2015-08-19 | 4790-016-0635 | 9.60 ppb |
| 2015-08-26 | 4790-046-1128 | 14.0 ppb |
| 2015-09-02 | 4790-008-1030 | 4.60 ppb |
| 2015-09-02 | 4790-009-1033 | ND |
| 2015-09-02 | 4790-010-1016 | 5.20 ppb |
| 2015-09-02 | 4790-012-0635 | 10.00 ppb |
| 2015-10-07 | 4790-008-0956 | ND |
| 2015-10-07 | 4790-010-0946 | 5.80 ppb |
| 2015-10-07 | 4790-012-0823 | 11.0 ppb |
| 2015-10-14 | 4790-009-1031 | ND |
| 2015-11-04 | 4790-008-1003 | 5.30 ppb |
| 2015-11-04 | 4790-010-0957 | 6.50 ppb |
| 2015-11-04 | 4790-012-0905 | 11.0 ppb |
| 2015-11-10 | 4790-009-1025 | ND |
| 2015-11-10 | 4790-016-0707 | 9.50 ppb |
| 2015-11-10 | 4790-039-0936 | 6.10 ppb |
| 2015-11-18 | 4790-032-1126 | 7.20 ppb |
| 2015-11-18 | 4790-046-1157 | 16.0 ppb |
| 2015-12-02 | 4790-008-1050 | 4.30 ppb |
| 2015-12-02 | 4790-010-1036 | 5.60 ppb |
| 2015-12-02 | 4790-012-0636 | 11.0 ppb |
| 2015-12-02 | 4790-039-0807 | 6.00 ppb |
| 2015-12-09 | 4790-009-1007 | 4.60 ppb |
| 2015-12-09 | 4790-016-0700 | 9.60 ppb |
| 2016-01-06 | 4790-009-1111 | ND |
| 2016-01-06 | 4790-010-1102 | 7.30 ppb |
| 2016-01-07 | 4790-016-1045 | 13.0 ppb |
| 2016-01-13 | 4790-012-1048 | 11.0 ppb |
| 2016-02-03 | 4790-009-1048 | ND |
| 2016-02-03 | 4790-010-1043 | 6.70 ppb |
| 2016-02-03 | 4790-016-1143 | 11.0 ppb |
| 2016-02-10 | 4790-008-1018 | ND |
| 2016-02-10 | 4790-032-1146 | 5.80 ppb |
| 2016-02-10 | 4790-039-0915 | 7.20 ppb |
| 2016-02-17 | 4790-046-1140 | 10.00 ppb |
| 2016-02-24 | 4790-012-0921 | 9.80 ppb |
| 2016-03-02 | 4790-008-1159 | ND |
| 2016-03-02 | 4790-016-0921 | 11.0 ppb |
| 2016-03-02 | 4790-032-1158 | 5.40 ppb |
| 2016-03-09 | 4790-009-1012 | ND |
| 2016-03-09 | 4790-010-1020 | 5.80 ppb |
| 2016-03-23 | 4790-012-1220 | 10.00 ppb |
| 2016-03-30 | 4790-046-0947 | 15.0 ppb |
| 2016-04-06 | 4790-008-1023 | ND |
| 2016-04-06 | 4790-016-0733 | 11.0 ppb |
| 2016-04-06 | 4790-046-1036 | 16.0 ppb |
| 2016-04-13 | 4790-009-1043 | ND |
| 2016-04-13 | 4790-032-1055 | 6.10 ppb |
| 2016-05-04 | 4790-008-1150 | ND |
| 2016-05-04 | 4790-009-1154 | ND |
| 2016-05-04 | 4790-016-0755 | 9.20 ppb |
| 2016-05-04 | 4790-032-1211 | 4.50 ppb |
| 2016-05-11 | 4790-039-0831 | 6.00 ppb |
| 2016-05-11 | 4790-046-1149 | 16.0 ppb |
| 2016-05-18 | 4790-012-1154 | 8.90 ppb |
| 2016-06-01 | 4790-008-1012 | 4.50 ppb |
| 2016-06-01 | 4790-009-1015 | ND |
| 2016-06-01 | 4790-016-0725 | 11.0 ppb |
| 2016-06-01 | 4790-032-1045 | 6.80 ppb |
| 2016-06-22 | 4790-039-0800 | 7.00 ppb |
| 2016-07-06 | 4790-008-1204 | 5.30 ppb |
| 2016-07-06 | 4790-009-1208 | ND |
| 2016-07-06 | 4790-016-0811 | 10.00 ppb |
| 2016-07-06 | 4790-039-0848 | 6.50 ppb |
| 2016-07-20 | 4790-010-1125 | ND |
| 2016-07-20 | 4790-012-0750 | 10.00 ppb |
| 2016-08-03 | 4790-008-1122 | 4.90 ppb |
| 2016-08-03 | 4790-009-1128 | ND |
| 2016-08-03 | 4790-012-0747 | 11.0 ppb |
| 2016-08-10 | 4790-010-1035 | ND |
| 2016-08-17 | 4790-032-1045 | ND |
| 2016-08-17 | 4790-039-1015 | 4.70 ppb |
| 2016-08-17 | 4790-046-1055 | 12.0 ppb |
| 2016-08-31 | 4790-016-1123 | 7.80 ppb |
| 2016-09-07 | 4790-008-1052 | 4.00 ppb |
| 2016-09-07 | 4790-009-1053 | ND |
| 2016-09-07 | 4790-012-0807 | 9.20 ppb |
| 2016-10-05 | 4790-008-1125 | 4.80 ppb |
| 2016-10-05 | 4790-009-1126 | ND |
| 2016-10-05 | 4790-012-0800 | 10.00 ppb |
| 2016-11-02 | 4790-008-1125 | 5.50 ppb |
| 2016-11-02 | 4790-009-1130 | 4.20 ppb |
| 2016-11-02 | 4790-012-0803 | 11.0 ppb |
| 2016-11-02 | 4790-039-0925 | 7.90 ppb |
| 2016-11-03 | 4790-018-1000 | ND |
| 2016-11-15 | 4790-010-1120 | ND |
| 2016-11-15 | 4790-032-1105 | ND |
| 2016-11-23 | 4790-046-1140 | 14.0 ppb |
| 2016-11-30 | 4790-016-1148 | 12.0 ppb |
| 2016-12-07 | 4790-008-1049 | 5.20 ppb |
| 2016-12-07 | 4790-009-1052 | ND |
| 2016-12-07 | 4790-012-0726 | 11.0 ppb |
| 2016-12-07 | 4790-039-0819 | 7.60 ppb |
| 2016-12-14 | 4790-016-0827 | 13.0 ppb |
| 2017-01-04 | 4790-008-1110 | 6.10 ppb |
| 2017-01-04 | 4790-009-1113 | ND |
| 2017-01-04 | 4790-039-0830 | 7.80 ppb |
| 2017-02-01 | 4790-008-1000 | 5.10 ppb |
| 2017-02-01 | 4790-009-1005 | ND |
| 2017-02-01 | 4790-039-0830 | 6.40 ppb |
| 2017-02-02 | 4790-016-0650 | 11.0 ppb |
| 2017-02-08 | 4790-010-1106 | 5.00 ppb |
| 2017-02-08 | 4790-032-1047 | 5.30 ppb |
| 2017-02-22 | 4790-012-1125 | 9.10 ppb |
| 2017-02-22 | 4790-046-1215 | 11.0 ppb |
| 2017-03-01 | 4790-008-1034 | 5.60 ppb |
| 2017-03-01 | 4790-009-1037 | ND |
| 2017-03-08 | 4790-032-1205 | 5.70 ppb |
| 2017-03-08 | 4790-039-0855 | 6.90 ppb |
| 2017-03-15 | 4790-012-1115 | 8.90 ppb |
| 2017-03-15 | 4790-016-0800 | 9.80 ppb |
| 2017-03-22 | 4790-018-1345 | 9.20 ppb |
| 2017-03-29 | 4790-010-1115 | 4.90 ppb |
| 2017-04-05 | 4790-008-1021 | 6.10 ppb |
| 2017-04-05 | 4790-009-1024 | ND |
| 2017-04-05 | 4790-010-1032 | 6.00 ppb |
| 2017-04-05 | 4790-016-0803 | 12.0 ppb |
| 2017-04-05 | 4790-032-1040 | 7.00 ppb |
| 2017-04-19 | 4790-012-0806 | 11.0 ppb |
| 2017-05-03 | 4790-008-1053 | 4.20 ppb |
| 2017-05-03 | 4790-010-1043 | 5.40 ppb |
| 2017-05-03 | 4790-012-0708 | 11.0 ppb |
| 2017-05-03 | 4790-032-1159 | 6.80 ppb |
| 2017-05-10 | 4790-039-1037 | 9.40 ppb |
| 2017-05-17 | 4790-009-1010 | ND |
| 2017-05-17 | 4790-046-1158 | 17.0 ppb |
| 2017-05-24 | 4790-016-0826 | 14.0 ppb |
| 2017-06-07 | 4790-008-1042 | 6.50 ppb |
| 2017-06-07 | 4790-009-1048 | ND |
| 2017-06-07 | 4790-012-0735 | 13.0 ppb |
| 2017-06-07 | 4790-032-0906 | 7.60 ppb |
| 2017-06-07 | 4790-039-0812 | 7.50 ppb |
| 2017-06-28 | 4790-010-0842 | 5.10 ppb |
| 2017-06-28 | 4790-016-0803 | 12.0 ppb |
| 2017-07-05 | 4790-010-1035 | 5.60 ppb |
| 2017-07-05 | 4790-016-0806 | 12.0 ppb |
| 2017-07-05 | 4790-032-1048 | 5.70 ppb |
| 2017-07-12 | 4790-039-0956 | 7.00 ppb |
| 2017-07-19 | 4790-008-1054 | ND |
| 2017-07-19 | 4790-009-1058 | ND |
| 2017-07-26 | 4790-012-0816 | 10.00 ppb |
| 2017-07-26 | 4790-018-0934 | 16.0 ppb |
| 2017-08-02 | 4790-008-1123 | 4.00 ppb |
| 2017-08-02 | 4790-009-1126 | ND |
| 2017-08-02 | 4790-010-1113 | 5.30 ppb |
| 2017-08-02 | 4790-012-0733 | 10.00 ppb |
| 2017-08-02 | 4790-018-0928 | 17.0 ppb |
| 2017-08-02 | 4790-032-1145 | 4.20 ppb |
| 2017-08-03 | 4790-018-0750 | 15.0 ppb |
| 2017-08-09 | 4790-016-0802 | 8.30 ppb |
| 2017-08-09 | 4790-039-0835 | 5.60 ppb |
| 2017-08-09 | 4790-046-1113 | 14.0 ppb |
| 2017-08-23 | 4790-039-0935 | 7.60 ppb |
| 2017-09-06 | 4790-008-1116 | 5.10 ppb |
| 2017-09-06 | 4790-009-1119 | ND |
| 2017-09-06 | 4790-010-1110 | 6.80 ppb |
| 2017-09-06 | 4790-012-0751 | 12.0 ppb |
| 2017-09-06 | 4790-032-1146 | 6.10 ppb |
| 2017-09-06 | 4790-039-0850 | 7.50 ppb |
| 2017-09-06 | 4790-046-1135 | 18.0 ppb |
| 2017-10-04 | 4790-008-1100 | 6.70 ppb |
| 2017-10-04 | 4790-009-1051 | ND |
| 2017-10-04 | 4790-012-0814 | 13.0 ppb |
| 2017-10-04 | 4790-039-0852 | 8.60 ppb |
| 2017-10-04 | 4790-046-1112 | 19.0 ppb |
| 2017-10-25 | 4790-010-1056 | 8.00 ppb |
| 2017-11-01 | 4790-008-1005 | 5.80 ppb |
| 2017-11-01 | 4790-009-1008 | ND |
| 2017-11-01 | 4790-010-1020 | 6.60 ppb |
| 2017-11-01 | 4790-012-0723 | 13.0 ppb |
| 2017-11-01 | 4790-039-0755 | 7.50 ppb |
| 2017-11-01 | 4790-046-0956 | 19.0 ppb |
| 2017-11-08 | 4790-016-1115 | 16.0 ppb |
| 2017-11-08 | 4790-032-1100 | 6.80 ppb |
| 2017-12-06 | 4790-039-0826 | 7.70 ppb |
| 2017-12-07 | 4790-008-1026 | 4.90 ppb |
| 2017-12-07 | 4790-009-1031 | ND |
| 2017-12-07 | 4790-010-1015 | 4.70 ppb |
| 2017-12-07 | 4790-032-1002 | 5.70 ppb |
| 2017-12-07 | 4790-046-1040 | 21.0 ppb |
| 2017-12-13 | 4790-016-0835 | 14.0 ppb |
| 2018-01-03 | 4790-008-0807 | 5.90 ppb |
| 2018-01-03 | 4790-009-0759 | ND |
| 2018-01-03 | 4790-010-0746 | 7.50 ppb |
| 2018-01-03 | 4790-016-0900 | 12.0 ppb |
| 2018-01-03 | 4790-032-0735 | 6.50 ppb |
| 2018-01-03 | 4790-039-0838 | 7.50 ppb |
| 2018-01-03 | 4790-046-0819 | 21.0 ppb |
| 2018-02-07 | 4790-008-1145 | 5.10 ppb |
| 2018-02-07 | 4790-009-1149 | ND |
| 2018-02-07 | 4790-010-1133 | 7.00 ppb |
| 2018-02-07 | 4790-016-0834 | 12.0 ppb |
| 2018-02-07 | 4790-032-1200 | 5.90 ppb |
| 2018-02-07 | 4790-046-1155 | 19.0 ppb |
| 2018-02-14 | 4790-008-0958 | 4.70 ppb |
| 2018-02-14 | 4790-009-1005 | ND |
| 2018-02-14 | 4790-010-0939 | 7.10 ppb |
| 2018-02-14 | 4790-012-0920 | 11.0 ppb |
| 2018-02-14 | 4790-012-0930 | 11.0 ppb |
| 2018-02-14 | 4790-016-1110 | 11.0 ppb |
| 2018-02-14 | 4790-032-1018 | 6.20 ppb |
| 2018-02-14 | 4790-039-1045 | 6.20 ppb |
| 2018-02-14 | 4790-039-1055 | 5.70 ppb |
| 2018-02-14 | 4790-046-0920 | 19.0 ppb |
| 2018-03-07 | 4790-008-0920 | 6.90 ppb |
| 2018-03-07 | 4790-009-0930 | ND |
| 2018-03-07 | 4790-010-0908 | 7.60 ppb |
| 2018-03-07 | 4790-016-0822 | 8.90 ppb |
| 2018-03-07 | 4790-032-1008 | 6.50 ppb |
| 2018-03-07 | 4790-039-0838 | 5.50 ppb |
| 2018-03-07 | 4790-046-0852 | 20.0 ppb |
| 2018-04-04 | 4790-008-0927 | ND |
| 2018-04-04 | 4790-009-0931 | ND |
| 2018-04-04 | 4790-010-0919 | ND |
| 2018-04-04 | 4790-016-0817 | 10.00 ppb |
| 2018-04-04 | 4790-032-0937 | 4.00 ppb |
| 2018-04-04 | 4790-039-0832 | 8.40 ppb |
| 2018-04-04 | 4790-046-0910 | 21.0 ppb |
| 2018-05-02 | 4790-008-0945 | ND |
| 2018-05-02 | 4790-009-0953 | ND |
| 2018-05-02 | 4790-010-0933 | 4.10 ppb |
| 2018-05-02 | 4790-016-0830 | 8.70 ppb |
| 2018-05-02 | 4790-032-1011 | ND |
| 2018-05-02 | 4790-039-0900 | 5.10 ppb |
| 2018-05-02 | 4790-046-0918 | 14.0 ppb |
| 2018-05-09 | 4790-012-0814 | 11.0 ppb |
| 2018-06-06 | 4790-008-0916 | 5.60 ppb |
| 2018-06-06 | 4790-009-0926 | ND |
| 2018-06-06 | 4790-010-0900 | 7.30 ppb |
| 2018-06-06 | 4790-012-0807 | 11.0 ppb |
| 2018-06-06 | 4790-032-0938 | 5.60 ppb |
| 2018-06-06 | 4790-039-0830 | 6.80 ppb |
| 2018-06-06 | 4790-046-0848 | 18.0 ppb |
| 2018-06-13 | 4790-016-0832 | 11.0 ppb |
| 2018-07-03 | 4790-008-1125 | 5.20 ppb |
| 2018-07-03 | 4790-009-1129 | ND |
| 2018-07-03 | 4790-010-1115 | 7.50 ppb |
| 2018-07-03 | 4790-012-0803 | 12.0 ppb |
| 2018-07-03 | 4790-032-1152 | 5.10 ppb |
| 2018-07-03 | 4790-039-0835 | 7.50 ppb |
| 2018-07-03 | 4790-046-1137 | 17.0 ppb |
| 2018-08-01 | 4790-008-0948 | 5.20 ppb |
| 2018-08-01 | 4790-009-1010 | ND |
| 2018-08-01 | 4790-010-0925 | 5.70 ppb |
| 2018-08-01 | 4790-012-0751 | 12.0 ppb |
| 2018-08-01 | 4790-016-1114 | 12.0 ppb |
| 2018-08-01 | 4790-032-1046 | 5.50 ppb |
| 2018-08-01 | 4790-039-0824 | 6.60 ppb |
| 2018-08-01 | 4790-046-0900 | 20.0 ppb |
| 2018-09-05 | 4790-008-0958 | 6.40 ppb |
| 2018-09-05 | 4790-009-0951 | ND |
| 2018-09-05 | 4790-010-0940 | 6.20 ppb |
| 2018-09-05 | 4790-012-0838 | 12.0 ppb |
| 2018-09-05 | 4790-032-1111 | 5.40 ppb |
| 2018-09-05 | 4790-039-0855 | 6.70 ppb |
| 2018-09-05 | 4790-046-0920 | 22.0 ppb |
| 2018-10-03 | 4790-008-0908 | 4.80 ppb |
| 2018-10-03 | 4790-009-0914 | ND |
| 2018-10-03 | 4790-010-0855 | 6.50 ppb |
| 2018-10-03 | 4790-012-0758 | 10.00 ppb |
| 2018-10-03 | 4790-032-0925 | 5.40 ppb |
| 2018-10-03 | 4790-039-0821 | 6.30 ppb |
| 2018-10-03 | 4790-046-0841 | 19.0 ppb |
| 2018-12-05 | 4790-008-0840 | 5.10 ppb |
| 2018-12-05 | 4790-009-0846 | ND |
| 2018-12-05 | 4790-010-0826 | 6.10 ppb |
| 2018-12-05 | 4790-032-0807 | 5.30 ppb |
| 2018-12-05 | 4790-046-0858 | 15.0 ppb |
| 2018-12-12 | 4790-016-0840 | 11.0 ppb |
| 2018-12-19 | 4790-039-0918 | 6.80 ppb |
| 2019-01-02 | 4790-008-0915 | 5.20 ppb |
| 2019-01-02 | 4790-009-0920 | ND |
| 2019-01-02 | 4790-010-0905 | 6.70 ppb |
| 2019-01-02 | 4790-016-0815 | 11.0 ppb |
| 2019-01-02 | 4790-032-0930 | 5.40 ppb |
| 2019-01-02 | 4790-046-0855 | 16.0 ppb |
| 2019-01-09 | 4790-039-1000 | 6.20 ppb |
| 2019-02-06 | 4790-008-0855 | 4.80 ppb |
| 2019-02-06 | 4790-009-0911 | ND |
| 2019-02-06 | 4790-010-0843 | 6.00 ppb |
| 2019-02-06 | 4790-032-0920 | 5.40 ppb |
| 2019-02-06 | 4790-039-0800 | 6.30 ppb |
| 2019-02-06 | 4790-046-0820 | 15.0 ppb |
| 2019-02-13 | 4790-012-1150 | 9.50 ppb |
| 2019-02-13 | 4790-016-1110 | 10.00 ppb |
| 2019-03-06 | 4790-008-1040 | 5.40 ppb |
| 2019-03-06 | 4790-009-1055 | ND |
| 2019-03-06 | 4790-010-1000 | 6.20 ppb |
| 2019-03-06 | 4790-012-1325 | 11.0 ppb |
| 2019-03-06 | 4790-016-1230 | 11.0 ppb |
| 2019-03-06 | 4790-032-1135 | 5.90 ppb |
| 2019-03-06 | 4790-039-1300 | 7.00 ppb |
| 2019-03-06 | 4790-046-1115 | 19.0 ppb |
| 2019-03-20 | 4790-008-0800 | ND |
| 2019-03-20 | 4790-009-0830 | ND |
| 2019-03-20 | 4790-010-0730 | 5.40 ppb |
| 2019-03-20 | 4790-012-0930 | 8.60 ppb |
| 2019-03-20 | 4790-016-0905 | 9.70 ppb |
| 2019-03-20 | 4790-032-1145 | 5.00 ppb |
| 2019-03-20 | 4790-039-0915 | 6.80 ppb |
| 2019-03-20 | 4790-046-0700 | 18.0 ppb |
| 2019-04-03 | 4790-008-0936 | 5.20 ppb |
| 2019-04-03 | 4790-009-0945 | ND |
| 2019-04-03 | 4790-010-0918 | 5.00 ppb |
| 2019-04-03 | 4790-016-0832 | 9.30 ppb |
| 2019-04-03 | 4790-032-1009 | 4.70 ppb |
| 2019-04-03 | 4790-039-1024 | 5.40 ppb |
| 2019-04-03 | 4790-046-0906 | 15.0 ppb |
| 2019-04-10 | 4790-012-1010 | 8.30 ppb |
| 2019-05-01 | 4790-008-0937 | 6.30 ppb |
| 2019-05-01 | 4790-009-0941 | ND |
| 2019-05-01 | 4790-010-0928 | 7.10 ppb |
| 2019-05-01 | 4790-012-1014 | 8.90 ppb |
| 2019-05-01 | 4790-016-0813 | 9.70 ppb |
| 2019-05-01 | 4790-032-0955 | 7.30 ppb |
| 2019-05-01 | 4790-039-0857 | 6.70 ppb |
| 2019-05-01 | 4790-046-0918 | 16.0 ppb |
| 2019-06-05 | 4790-008-1035 | ND |
| 2019-06-05 | 4790-009-1040 | ND |
| 2019-06-05 | 4790-010-1030 | 4.20 ppb |
| 2019-06-05 | 4790-012-1130 | 6.50 ppb |
| 2019-06-05 | 4790-016-0910 | 7.60 ppb |
| 2019-06-05 | 4790-039-0940 | 4.60 ppb |
| 2019-06-05 | 4790-046-1020 | 11.0 ppb |
| 2019-07-03 | 4790-012-0800 | 11.0 ppb |
| 2019-07-03 | 4790-039-0920 | 5.70 ppb |
| 2019-07-24 | 4790-008-1105 | ND |
| 2019-07-24 | 4790-009-1107 | ND |
| 2019-07-24 | 4790-010-1055 | ND |
| 2019-07-24 | 4790-046-1115 | 21.0 ppb |
| 2019-08-07 | 4790-008-1012 | ND |
| 2019-08-07 | 4790-009-1020 | ND |
| 2019-08-07 | 4790-010-0958 | 4.60 ppb |
| 2019-08-07 | 4790-012-0810 | 11.0 ppb |
| 2019-08-07 | 4790-039-0929 | 6.60 ppb |
| 2019-08-07 | 4790-046-1031 | 19.0 ppb |
| 2019-08-14 | 4790-016-1100 | 13.0 ppb |
| 2019-09-04 | 4790-008-1215 | ND |
| 2019-09-04 | 4790-012-0920 | 12.0 ppb |
| 2019-09-04 | 4790-039-1010 | 7.60 ppb |
| 2019-09-04 | 4790-046-1233 | 21.0 ppb |
| 2019-09-18 | 4790-009-1012 | ND |
| 2019-09-18 | 4790-010-1012 | ND |
| 2019-10-02 | 4790-008-0902 | ND |
| 2019-10-02 | 4790-012-0804 | 11.0 ppb |
| 2019-10-02 | 4790-039-0830 | 6.70 ppb |
| 2019-10-02 | 4790-046-0915 | 19.0 ppb |
| 2019-10-16 | 4790-009-0852 | ND |
| 2019-10-16 | 4790-010-0843 | ND |
| 2019-11-06 | 4790-008-0942 | ND |
| 2019-11-06 | 4790-012-0844 | 12.0 ppb |
| 2019-11-06 | 4790-016-1051 | 12.0 ppb |
| 2019-11-06 | 4790-039-1033 | 6.80 ppb |
| 2019-11-06 | 4790-046-0954 | 20.0 ppb |
| 2019-11-20 | 4790-009-0853 | ND |
| 2019-11-20 | 4790-010-0905 | 4.60 ppb |
| 2019-12-04 | 4790-016-0850 | 11.0 ppb |
| 2019-12-04 | 4790-039-1018 | 6.80 ppb |
| 2019-12-11 | 4790-008-0853 | ND |
| 2019-12-11 | 4790-046-0904 | 18.0 ppb |