1,4-Dioxane
Monterey Park Water Department
1,4-Dioxane is a solvent classified by the EPA as a likely human carcinogen. It contaminates groundwater in many states due to industrial wastewater discharges, plastic manufacturing runoff and landfill runoff. Read More.
Animal studies show that 1,4-dioxane can target the liver, kidneys and respiratory system, and that prenatal exposure can harm the developing fetus. The State of California has set a Public Heatlh Goal of no more than 1 part per billion of 1,4-dioxane in drinking water. The state of Massachusetts sets a legal limit of 0.3 ppb, and New Hampshire's limit is 3 parts per billion. There is no national drinking water standard for this contaminant.
410
Samples
0
Samples exceeding legal limit (MCL)
85
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 0.321 ppb | 56 | 12 | ND - 2.80 ppb |
| 2015 | 0.369 ppb | 48 | 13 | ND - 2.20 ppb |
| 2016 | 0.303 ppb | 72 | 17 | ND - 1.70 ppb |
| 2017 | 0.293 ppb | 68 | 17 | ND - 1.40 ppb |
| 2018 | 0.218 ppb | 83 | 15 | ND - 1.30 ppb |
| 2019 | 0.164 ppb | 83 | 11 | ND - 1.80 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.35 ppb
The EWG Health Guideline of 0.35 ppb for 1,4-dioxane was defined by the Environmental Protection Agency 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 |
|---|---|---|
| 2014-01-14 | 9588-006-1000 | ND |
| 2014-01-14 | 9588-043-1010 | ND |
| 2014-01-14 | 9588-085-0950 | ND |
| 2014-01-15 | 9588-010-0810 | ND |
| 2014-01-15 | 9588-013-0820 | 2.80 ppb |
| 2014-01-15 | 9588-038-0725 | 2.20 ppb |
| 2014-02-03 | 9588-043-0850 | ND |
| 2014-02-03 | 9588-068-0945 | ND |
| 2014-02-03 | 9588-085-0855 | ND |
| 2014-03-04 | 9588-043-0000 | ND |
| 2014-03-04 | 9588-068-0000 | 1.20 ppb |
| 2014-03-04 | 9588-085-0000 | ND |
| 2014-04-01 | 9588-006-0000 | ND |
| 2014-04-01 | 9588-043-0000 | ND |
| 2014-04-01 | 9588-068-0000 | ND |
| 2014-04-01 | 9588-085-0000 | ND |
| 2014-04-08 | 9588-010-0945 | ND |
| 2014-04-08 | 9588-013-0820 | ND |
| 2014-04-08 | 9588-038-0840 | 1.40 ppb |
| 2014-05-06 | 9588-043-0805 | ND |
| 2014-05-06 | 9588-068-0820 | ND |
| 2014-05-06 | 9588-085-0810 | ND |
| 2014-06-03 | 9588-043-0810 | ND |
| 2014-06-03 | 9588-068-0830 | ND |
| 2014-06-03 | 9588-085-0815 | ND |
| 2014-07-08 | 9588-006-0000 | ND |
| 2014-07-08 | 9588-010-0000 | ND |
| 2014-07-08 | 9588-013-0000 | 1.70 ppb |
| 2014-07-08 | 9588-038-0000 | 1.10 ppb |
| 2014-07-08 | 9588-043-0000 | ND |
| 2014-07-08 | 9588-068-0000 | ND |
| 2014-07-08 | 9588-081-1515 | 1.40 ppb |
| 2014-07-08 | 9588-085-0000 | ND |
| 2014-08-05 | 9588-043-0858 | ND |
| 2014-08-05 | 9588-068-1020 | ND |
| 2014-08-05 | 9588-085-0903 | ND |
| 2014-08-21 | 9588-002-0945 | ND |
| 2014-09-02 | 9588-043-1010 | ND |
| 2014-09-02 | 9588-068-1025 | 1.10 ppb |
| 2014-09-04 | 9588-085-1000 | ND |
| 2014-10-08 | 9588-006-0700 | ND |
| 2014-10-08 | 9588-010-1000 | ND |
| 2014-10-08 | 9588-013-1025 | 1.70 ppb |
| 2014-10-08 | 9588-038-1010 | 1.10 ppb |
| 2014-10-08 | 9588-043-0750 | ND |
| 2014-10-08 | 9588-068-0810 | ND |
| 2014-10-08 | 9588-085-0800 | ND |
| 2014-11-05 | 9588-001-1300 | ND |
| 2014-11-05 | 9588-006-1405 | ND |
| 2014-11-05 | 9588-011-1340 | ND |
| 2014-11-05 | 9588-043-0815 | ND |
| 2014-11-05 | 9588-068-0825 | 1.20 ppb |
| 2014-11-05 | 9588-085-0820 | ND |
| 2014-12-03 | 9588-043-0720 | ND |
| 2014-12-03 | 9588-068-0750 | 1.10 ppb |
| 2014-12-03 | 9588-085-0740 | ND |
| 2015-01-13 | 9588-010-1145 | ND |
| 2015-01-13 | 9588-013-1205 | 1.60 ppb |
| 2015-01-13 | 9588-038-1155 | 1.10 ppb |
| 2015-01-14 | 9588-006-0750 | ND |
| 2015-01-14 | 9588-043-0755 | ND |
| 2015-01-14 | 9588-068-0910 | ND |
| 2015-01-14 | 9588-085-0850 | ND |
| 2015-02-03 | 9588-043-0750 | ND |
| 2015-02-03 | 9588-068-0948 | ND |
| 2015-02-03 | 9588-085-0753 | ND |
| 2015-02-26 | 5B26032-03A | 0.390 ppb |
| 2015-02-26 | 5B26032-01A | 0.840 ppb |
| 2015-03-03 | 9588-043-0739 | ND |
| 2015-03-03 | 9588-068-0819 | ND |
| 2015-03-03 | 9588-085-0815 | ND |
| 2015-04-06 | 9588-010-1030 | ND |
| 2015-04-06 | 9588-013-0900 | 1.80 ppb |
| 2015-04-06 | 9588-038-0920 | 1.30 ppb |
| 2015-04-07 | 9588-006-0700 | ND |
| 2015-04-07 | 9588-043-0750 | ND |
| 2015-04-07 | 9588-068-0810 | 1.10 ppb |
| 2015-04-07 | 9588-085-0755 | ND |
| 2015-05-04 | 9588-043-1220 | ND |
| 2015-05-04 | 9588-043-1230 | ND |
| 2015-05-04 | 9588-068-1325 | 1.10 ppb |
| 2015-06-03 | 9588-043-1115 | ND |
| 2015-06-03 | 9588-068-1135 | ND |
| 2015-06-03 | 9588-085-1030 | ND |
| 2015-07-07 | 9588-006-1459 | ND |
| 2015-07-07 | 9588-010-0912 | ND |
| 2015-07-07 | 9588-013-0840 | 2.20 ppb |
| 2015-07-07 | 9588-043-1459 | ND |
| 2015-07-07 | 9588-068-1459 | 1.30 ppb |
| 2015-07-07 | 9588-085-1459 | ND |
| 2015-08-03 | 9588-043-1015 | ND |
| 2015-08-03 | 9588-068-1040 | ND |
| 2015-08-03 | 9588-085-1025 | ND |
| 2015-08-07 | 9588-038-0750 | 2.20 ppb |
| 2015-08-25 | 9588-002-1010 | ND |
| 2015-09-01 | 9588-043-0955 | ND |
| 2015-09-01 | 9588-068-1040 | 1.50 ppb |
| 2015-09-01 | 9588-085-1000 | ND |
| 2015-11-10 | 9588-001-1005 | ND |
| 2015-11-10 | 9588-006-1100 | ND |
| 2015-11-10 | 9588-011-1115 | ND |
| 2015-12-02 | 9588-043-0855 | ND |
| 2015-12-02 | 9588-068-0905 | 1.30 ppb |
| 2015-12-02 | 9588-085-0940 | ND |
| 2016-01-04 | 9588-001-0925 | ND |
| 2016-01-04 | 9588-002-0945 | ND |
| 2016-01-04 | 9588-006-0855 | ND |
| 2016-01-04 | 9588-010-0416 | ND |
| 2016-01-04 | 9588-011-1005 | ND |
| 2016-01-04 | 9588-013-1020 | 1.70 ppb |
| 2016-01-04 | 9588-038-1010 | 1.30 ppb |
| 2016-01-04 | 9588-043-0930 | ND |
| 2016-01-04 | 9588-067-0915 | ND |
| 2016-01-04 | 9588-068-1020 | 1.000 ppb |
| 2016-01-04 | 9588-085-0947 | ND |
| 2016-02-02 | 9588-043-0900 | ND |
| 2016-02-02 | 9588-068-1048 | ND |
| 2016-02-02 | 9588-085-0830 | ND |
| 2016-03-02 | 9588-043-0922 | ND |
| 2016-03-02 | 9588-068-1000 | 1.40 ppb |
| 2016-03-02 | 9588-085-0845 | ND |
| 2016-04-05 | 9590-006-0755 | ND |
| 2016-04-05 | 9590-010-1205 | ND |
| 2016-04-05 | 9590-013-1125 | 1.30 ppb |
| 2016-04-05 | 9590-038-1100 | 1.20 ppb |
| 2016-04-05 | 9590-043-0740 | ND |
| 2016-04-05 | 9590-068-0930 | ND |
| 2016-04-05 | 9590-068-1040 | ND |
| 2016-04-05 | 9590-081-1035 | 1.10 ppb |
| 2016-04-05 | 9590-085-0845 | ND |
| 2016-04-06 | 9590-001-0715 | ND |
| 2016-04-06 | 9590-002-0905 | ND |
| 2016-04-06 | 9590-011-0930 | ND |
| 2016-04-06 | 9590-067-0845 | ND |
| 2016-04-06 | 9590-068-0850 | ND |
| 2016-05-10 | 9590-043-1125 | ND |
| 2016-05-10 | 9590-068-1010 | ND |
| 2016-05-10 | 9590-085-1135 | ND |
| 2016-07-05 | 9590-006-0820 | ND |
| 2016-07-05 | 9590-010-1140 | ND |
| 2016-07-05 | 9590-013-0940 | 1.40 ppb |
| 2016-07-05 | 9590-038-1155 | 1.000 ppb |
| 2016-07-05 | 9590-043-0830 | ND |
| 2016-07-05 | 9590-068-0900 | 1.20 ppb |
| 2016-07-05 | 9590-068-1130 | 1.30 ppb |
| 2016-07-05 | 9590-081-1030 | 1.30 ppb |
| 2016-07-05 | 9590-085-0805 | ND |
| 2016-07-06 | 9590-001-0900 | ND |
| 2016-07-06 | 9590-002-1100 | ND |
| 2016-07-06 | 9590-011-0800 | ND |
| 2016-07-06 | 9590-067-1030 | ND |
| 2016-07-06 | 9590-068-1045 | ND |
| 2016-08-02 | 9590-043-1130 | ND |
| 2016-08-02 | 9590-068-0920 | ND |
| 2016-08-11 | 9588-002-0920 | ND |
| 2016-10-04 | 9590-006-0800 | ND |
| 2016-10-04 | 9590-010-1150 | ND |
| 2016-10-04 | 9590-013-1110 | 1.40 ppb |
| 2016-10-04 | 9590-043-0820 | ND |
| 2016-10-04 | 9590-068-0920 | ND |
| 2016-10-04 | 9590-068-1300 | ND |
| 2016-10-04 | 9590-081-1220 | 1.40 ppb |
| 2016-10-04 | 9590-085-0740 | ND |
| 2016-10-05 | 9590-001-1020 | ND |
| 2016-10-05 | 9590-002-1050 | ND |
| 2016-10-05 | 9590-011-1110 | ND |
| 2016-10-05 | 9590-067-1000 | ND |
| 2016-10-05 | 9590-068-1030 | ND |
| 2016-10-18 | 9590-038-0750 | 1.20 ppb |
| 2016-11-02 | 9590-043-1345 | ND |
| 2016-11-02 | 9590-068-1345 | 1.50 ppb |
| 2016-11-02 | 9590-085-1310 | ND |
| 2016-11-14 | 9588-001-0920 | ND |
| 2016-11-14 | 9588-006-0945 | ND |
| 2016-11-14 | 9588-011-1000 | ND |
| 2016-11-22 | 9590-068-0851 | 1.10 ppb |
| 2017-01-10 | 9590-001-0910 | ND |
| 2017-01-10 | 9590-002-0810 | ND |
| 2017-01-10 | 9590-006-1220 | ND |
| 2017-01-10 | 9590-010-1035 | ND |
| 2017-01-10 | 9590-011-0835 | ND |
| 2017-01-10 | 9590-013-0950 | 1.20 ppb |
| 2017-01-10 | 9590-038-0930 | 1.000 ppb |
| 2017-01-10 | 9590-043-1240 | ND |
| 2017-01-10 | 9590-067-0935 | ND |
| 2017-01-10 | 9590-068-0755 | ND |
| 2017-01-10 | 9590-068-1050 | ND |
| 2017-01-10 | 9590-068-1330 | ND |
| 2017-01-10 | 9590-081-0835 | 1.20 ppb |
| 2017-01-10 | 9590-085-1200 | ND |
| 2017-02-08 | 9590-043-0845 | ND |
| 2017-02-08 | 9590-068-0905 | ND |
| 2017-02-08 | 9590-085-0850 | ND |
| 2017-03-07 | 9590-043-1020 | ND |
| 2017-03-07 | 9590-068-0820 | ND |
| 2017-03-07 | 9590-085-1005 | ND |
| 2017-04-03 | 9590-010-1000 | ND |
| 2017-04-03 | 9590-013-1025 | 1.30 ppb |
| 2017-04-03 | 9590-038-0855 | 1.000 ppb |
| 2017-04-03 | 9590-068-1110 | 1.000 ppb |
| 2017-04-03 | 9590-081-1220 | 1.10 ppb |
| 2017-04-04 | 9590-001-0940 | ND |
| 2017-04-04 | 9590-002-0850 | ND |
| 2017-04-04 | 9590-006-0835 | ND |
| 2017-04-04 | 9590-011-0750 | ND |
| 2017-04-04 | 9590-043-0955 | ND |
| 2017-04-04 | 9590-067-1020 | ND |
| 2017-04-04 | 9590-068-1050 | ND |
| 2017-04-04 | 9590-068-1150 | ND |
| 2017-04-04 | 9590-085-1035 | ND |
| 2017-07-11 | 9590-001-0910 | ND |
| 2017-07-11 | 9590-010-1145 | ND |
| 2017-07-11 | 9590-011-1000 | ND |
| 2017-07-11 | 9590-013-1110 | 1.40 ppb |
| 2017-07-11 | 9590-038-1128 | 1.20 ppb |
| 2017-07-11 | 9590-067-0830 | ND |
| 2017-07-11 | 9590-068-0930 | ND |
| 2017-07-11 | 9590-068-0940 | ND |
| 2017-07-11 | 9590-081-1210 | 1.30 ppb |
| 2017-08-15 | 9590-002-0835 | ND |
| 2017-08-15 | 9588-002-0915 | ND |
| 2017-10-13 | 9590-043-1010 | ND |
| 2017-10-13 | 9590-068-1040 | 1.10 ppb |
| 2017-10-13 | 9590-085-1020 | ND |
| 2017-11-07 | 9590-006-1300 | ND |
| 2017-11-07 | 9590-010-0945 | ND |
| 2017-11-07 | 9590-013-0805 | 1.30 ppb |
| 2017-11-07 | 9590-038-0900 | 1.30 ppb |
| 2017-11-07 | 9590-043-1320 | ND |
| 2017-11-07 | 9590-068-1120 | 1.10 ppb |
| 2017-11-07 | 9590-068-1400 | 1.000 ppb |
| 2017-11-07 | 9590-081-1020 | 1.30 ppb |
| 2017-11-07 | 9590-085-1245 | ND |
| 2017-11-08 | 9590-001-0950 | ND |
| 2017-11-08 | 9590-002-0805 | ND |
| 2017-11-08 | 9590-011-0810 | ND |
| 2017-11-08 | 9590-067-0930 | ND |
| 2017-11-08 | 9590-068-1010 | ND |
| 2017-11-09 | 9588-001-0905 | ND |
| 2017-11-09 | 9588-006-0930 | ND |
| 2017-11-09 | 9588-011-0940 | ND |
| 2017-12-05 | 9590-043-1045 | ND |
| 2017-12-06 | 9590-068-0730 | 1.10 ppb |
| 2017-12-06 | 9590-085-0800 | ND |
| 2018-01-08 | 9590-001-1022 | ND |
| 2018-01-08 | 9590-002-1045 | ND |
| 2018-01-08 | 9590-006-1040 | ND |
| 2018-01-08 | 9590-011-1035 | ND |
| 2018-01-08 | 9590-043-1045 | ND |
| 2018-01-08 | 9590-067-1223 | ND |
| 2018-01-08 | 9590-068-1100 | ND |
| 2018-01-08 | 9590-068-1200 | ND |
| 2018-01-08 | 9590-085-1050 | ND |
| 2018-02-07 | 9590-010-1100 | ND |
| 2018-02-07 | 9590-013-1130 | 1.30 ppb |
| 2018-02-07 | 9590-038-1030 | 1.20 ppb |
| 2018-02-07 | 9590-068-0900 | 1.000 ppb |
| 2018-02-07 | 9590-081-0815 | 1.20 ppb |
| 2018-02-12 | 9590-043-1220 | ND |
| 2018-02-12 | 9590-068-1300 | 1.20 ppb |
| 2018-02-12 | 9590-085-1235 | ND |
| 2018-03-07 | 9590-043-0950 | ND |
| 2018-03-07 | 9590-068-0848 | ND |
| 2018-03-07 | 9590-085-1000 | ND |
| 2018-04-03 | 9590-001-0930 | ND |
| 2018-04-03 | 9590-002-0800 | ND |
| 2018-04-03 | 9590-010-1000 | ND |
| 2018-04-11 | 9590-006-1055 | ND |
| 2018-04-11 | 9590-043-1145 | ND |
| 2018-04-11 | 9590-068-1210 | 1.20 ppb |
| 2018-04-11 | 9590-085-1150 | ND |
| 2018-04-24 | 9590-001-0820 | ND |
| 2018-04-24 | 9590-002-0810 | ND |
| 2018-04-24 | 9590-010-0910 | ND |
| 2018-04-24 | 9590-011-1030 | ND |
| 2018-04-24 | 9590-013-0920 | 1.20 ppb |
| 2018-04-24 | 9590-038-0900 | 1.20 ppb |
| 2018-04-24 | 9590-067-1040 | ND |
| 2018-04-24 | 9590-068-0800 | ND |
| 2018-04-24 | 9590-068-0805 | ND |
| 2018-04-24 | 9590-081-1100 | 1.20 ppb |
| 2018-05-03 | 9590-043-1105 | ND |
| 2018-05-03 | 9590-068-1140 | 1.10 ppb |
| 2018-05-03 | 9590-085-1120 | ND |
| 2018-06-05 | 9590-043-1150 | ND |
| 2018-06-05 | 9590-068-1205 | ND |
| 2018-06-05 | 9590-085-1155 | ND |
| 2018-07-02 | 9590-010-0940 | ND |
| 2018-07-02 | 9590-013-1030 | 1.30 ppb |
| 2018-07-02 | 9590-038-1010 | 1.20 ppb |
| 2018-07-02 | 9590-068-1220 | ND |
| 2018-07-02 | 9590-081-1200 | 1.30 ppb |
| 2018-07-03 | 9590-001-1150 | ND |
| 2018-07-03 | 9590-002-1205 | ND |
| 2018-07-03 | 9590-006-1000 | ND |
| 2018-07-03 | 9590-011-1220 | ND |
| 2018-07-03 | 9590-043-0930 | ND |
| 2018-07-03 | 9590-067-1140 | ND |
| 2018-07-03 | 9590-068-1110 | ND |
| 2018-07-03 | 9590-068-1230 | ND |
| 2018-08-09 | 9588-002-0915 | ND |
| 2018-09-13 | 9590-043-0910 | ND |
| 2018-09-13 | 9590-068-0755 | ND |
| 2018-09-13 | 9590-085-0915 | ND |
| 2018-10-02 | 9590-001-0900 | ND |
| 2018-10-02 | 9590-002-0910 | ND |
| 2018-10-02 | 9590-006-1000 | ND |
| 2018-10-02 | 9590-010-1030 | ND |
| 2018-10-02 | 9590-011-0940 | ND |
| 2018-10-02 | 9590-013-1000 | 1.30 ppb |
| 2018-10-02 | 9590-038-1100 | 1.20 ppb |
| 2018-10-02 | 9590-043-1010 | ND |
| 2018-10-02 | 9590-067-0830 | ND |
| 2018-10-02 | 9590-068-0925 | ND |
| 2018-10-02 | 9590-068-0930 | ND |
| 2018-10-02 | 9590-068-1138 | ND |
| 2018-10-02 | 9590-081-0830 | ND |
| 2018-10-02 | 9590-085-1042 | ND |
| 2018-11-05 | 9590-043-0940 | ND |
| 2018-11-05 | 9590-068-1010 | ND |
| 2018-11-05 | 9590-085-0950 | ND |
| 2018-11-15 | 9588-001-0855 | ND |
| 2018-11-15 | 9588-006-0925 | ND |
| 2018-11-15 | 9588-011-0940 | ND |
| 2018-12-04 | 9590-043-1030 | ND |
| 2018-12-04 | 9590-068-1140 | ND |
| 2018-12-04 | 9590-085-1020 | ND |
| 2019-01-08 | 9590-001-0931 | ND |
| 2019-01-08 | 9590-002-1000 | ND |
| 2019-01-08 | 9590-006-1130 | ND |
| 2019-01-08 | 9590-011-1030 | ND |
| 2019-01-08 | 9590-043-1200 | ND |
| 2019-01-08 | 9590-067-0840 | ND |
| 2019-01-08 | 9590-068-0941 | ND |
| 2019-01-08 | 9590-068-0955 | ND |
| 2019-01-08 | 9590-085-1100 | ND |
| 2019-01-09 | 9590-010-1100 | ND |
| 2019-01-09 | 9590-038-1130 | 1.10 ppb |
| 2019-01-09 | 9590-068-0915 | ND |
| 2019-01-09 | 9590-081-0900 | ND |
| 2019-02-04 | 9590-043-0925 | ND |
| 2019-02-04 | 9590-068-1010 | ND |
| 2019-02-04 | 9590-085-0945 | ND |
| 2019-03-05 | 9590-043-1130 | ND |
| 2019-03-05 | 9590-068-1145 | ND |
| 2019-03-05 | 9590-085-1135 | ND |
| 2019-04-02 | 9590-010-1140 | ND |
| 2019-04-02 | 9590-038-1200 | 1.20 ppb |
| 2019-04-02 | 9590-068-1045 | ND |
| 2019-04-02 | 9590-081-0911 | ND |
| 2019-04-03 | 9590-001-1130 | ND |
| 2019-04-03 | 9590-002-1210 | ND |
| 2019-04-03 | 9590-006-0805 | ND |
| 2019-04-03 | 9590-011-1150 | ND |
| 2019-04-03 | 9590-043-0755 | ND |
| 2019-04-03 | 9590-067-1110 | ND |
| 2019-04-03 | 9590-068-0910 | ND |
| 2019-04-03 | 9590-068-0915 | ND |
| 2019-04-03 | 9590-085-0740 | ND |
| 2019-04-24 | 9590-013-0805 | 1.80 ppb |
| 2019-05-08 | 9590-043-1145 | ND |
| 2019-05-08 | 9590-068-1151 | 1.10 ppb |
| 2019-05-08 | 9590-085-1121 | ND |
| 2019-06-04 | 9590-043-1225 | ND |
| 2019-06-04 | 9590-068-1240 | 1.30 ppb |
| 2019-06-04 | 9590-085-1230 | ND |
| 2019-07-02 | 9590-001-0840 | ND |
| 2019-07-02 | 9590-002-0800 | ND |
| 2019-07-02 | 9590-006-0738 | ND |
| 2019-07-02 | 9590-010-1008 | ND |
| 2019-07-02 | 9590-011-0740 | ND |
| 2019-07-02 | 9590-013-0926 | 1.30 ppb |
| 2019-07-02 | 9590-038-0948 | 1.000 ppb |
| 2019-07-02 | 9590-043-0800 | ND |
| 2019-07-02 | 9590-067-1000 | ND |
| 2019-07-02 | 9590-068-0846 | ND |
| 2019-07-02 | 9590-068-0848 | ND |
| 2019-07-02 | 9590-068-1020 | ND |
| 2019-07-02 | 9590-081-0825 | 1.20 ppb |
| 2019-07-02 | 9590-085-0834 | ND |
| 2019-08-06 | 9590-043-0815 | ND |
| 2019-08-06 | 9590-068-0740 | ND |
| 2019-08-06 | 9590-085-0838 | ND |
| 2019-08-27 | 9588-002-1020 | ND |
| 2019-09-04 | 9590-043-1025 | ND |
| 2019-09-04 | 9590-068-1040 | ND |
| 2019-09-04 | 9590-085-1030 | ND |
| 2019-10-01 | 9590-010-1140 | ND |
| 2019-10-01 | 9590-013-1120 | 1.30 ppb |
| 2019-10-01 | 9590-038-1240 | 1.10 ppb |
| 2019-10-01 | 9590-068-1015 | ND |
| 2019-10-01 | 9590-081-0825 | 1.20 ppb |
| 2019-10-02 | 9590-001-0915 | ND |
| 2019-10-02 | 9590-002-0940 | ND |
| 2019-10-02 | 9590-006-1105 | ND |
| 2019-10-02 | 9590-011-1035 | ND |
| 2019-10-02 | 9590-043-1115 | ND |
| 2019-10-02 | 9590-067-0900 | ND |
| 2019-10-02 | 9590-068-0930 | ND |
| 2019-10-02 | 9590-068-1230 | ND |
| 2019-10-02 | 9590-085-1130 | ND |
| 2019-11-06 | 9590-043-0815 | ND |
| 2019-11-06 | 9590-068-0900 | ND |
| 2019-11-06 | 9590-085-0830 | ND |
| 2019-11-13 | 9588-001-0915 | ND |
| 2019-11-13 | 9588-006-0940 | ND |
| 2019-11-13 | 9588-011-0925 | ND |
| 2019-12-03 | 9590-043-0850 | ND |
| 2019-12-03 | 9590-068-0755 | ND |
| 2019-12-03 | 9590-085-0905 | ND |