1,4-Dioxane
Suffolk County Water Authority
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.
488
Samples
0
Samples exceeding legal limit (MCL)
86
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | 0.302 ppb | 245 | 135 | ND - 4.34 ppb |
| 2014 | 0.139 ppb | 229 | 79 | ND - 4.00 ppb |
| 2015 | 0.0536 ppb | 12 | 2 | ND - 0.343 ppb |
| 2016 | 0.414 ppb | 1 | 1 | 0.414 ppb |
| 2017 | 0.396 ppb | 1 | 1 | 0.396 ppb |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2013-01-03 | 201575650 | ND |
| 2013-01-04 | 201574771 | 0.290 ppb |
| 2013-01-10 | 201575363 | 0.430 ppb |
| 2013-01-11 | 201573042 | ND |
| 2013-01-16 | 201574828 | 0.790 ppb |
| 2013-01-16 | 201575530 | ND |
| 2013-01-17 | 201575544 | 0.260 ppb |
| 2013-01-17 | 201575555 | ND |
| 2013-01-23 | 201573116 | ND |
| 2013-01-25 | 201575543 | ND |
| 2013-01-25 | 201575568 | ND |
| 2013-01-29 | 201575567 | 0.530 ppb |
| 2013-01-29 | 201575556 | 0.500 ppb |
| 2013-01-30 | 201590164 | 0.320 ppb |
| 2013-02-06 | 201590257 | ND |
| 2013-02-06 | 201588603 | 0.130 ppb |
| 2013-02-07 | 201590328 | ND |
| 2013-02-08 | 201590287 | 1.58 ppb |
| 2013-02-08 | 201590298 | 0.310 ppb |
| 2013-02-13 | 201587911 | 0.140 ppb |
| 2013-02-13 | 201590281 | 0.0770 ppb |
| 2013-02-21 | 201590275 | 0.480 ppb |
| 2013-02-22 | 201590322 | 1.42 ppb |
| 2013-02-26 | 201590251 | 0.120 ppb |
| 2013-02-26 | 201590329 | 0.180 ppb |
| 2013-02-27 | 201590258 | ND |
| 2013-02-27 | 201587865 | ND |
| 2013-03-01 | 201604141 | 3.29 ppb |
| 2013-03-05 | 201574756 | 0.700 ppb |
| 2013-03-06 | 201604801 | 0.630 ppb |
| 2013-03-06 | 201603020 | 0.190 ppb |
| 2013-03-06 | 201604826 | 1.14 ppb |
| 2013-03-07 | 201604199 | 0.290 ppb |
| 2013-03-07 | 201602989 | ND |
| 2013-03-08 | 201604844 | 0.250 ppb |
| 2013-03-08 | 201603115 | 0.410 ppb |
| 2013-03-08 | 201603260 | 0.0750 ppb |
| 2013-03-13 | 201599973 | ND |
| 2013-03-14 | 201604820 | ND |
| 2013-03-14 | 201604795 | ND |
| 2013-03-15 | 201598857 | 0.240 ppb |
| 2013-03-21 | 201603297 | 0.280 ppb |
| 2013-03-21 | 201604808 | ND |
| 2013-03-21 | 201604807 | ND |
| 2013-03-22 | 201604819 | ND |
| 2013-03-22 | 201600706 | 0.620 ppb |
| 2013-03-27 | 201601398 | 1.23 ppb |
| 2013-03-27 | 201603039 | 0.510 ppb |
| 2013-03-27 | 201600738 | 0.860 ppb |
| 2013-03-27 | 201600567 | 0.160 ppb |
| 2013-03-28 | 201604843 | 0.690 ppb |
| 2013-04-04 | 201590268 | ND |
| 2013-04-05 | 201621683 | 0.310 ppb |
| 2013-04-05 | 201618338 | 0.750 ppb |
| 2013-04-05 | 201618349 | 0.290 ppb |
| 2013-04-05 | 201618392 | 0.370 ppb |
| 2013-04-05 | 201618391 | 0.450 ppb |
| 2013-04-10 | 201590305 | 1.61 ppb |
| 2013-04-11 | 201614161 | ND |
| 2013-04-11 | 201618380 | 2.60 ppb |
| 2013-04-11 | 201617293 | ND |
| 2013-04-12 | 201616754 | ND |
| 2013-04-12 | 201618367 | ND |
| 2013-04-17 | 201617352 | 0.650 ppb |
| 2013-04-17 | 201618421 | ND |
| 2013-04-17 | 201613344 | ND |
| 2013-04-18 | 201618415 | 0.160 ppb |
| 2013-04-19 | 201616844 | 0.350 ppb |
| 2013-04-19 | 201618356 | 0.240 ppb |
| 2013-04-23 | 201618398 | 0.160 ppb |
| 2013-04-23 | 201618368 | ND |
| 2013-04-23 | 201618379 | ND |
| 2013-04-24 | 201618439 | 0.250 ppb |
| 2013-04-24 | 201618422 | ND |
| 2013-04-24 | 201618428 | 0.430 ppb |
| 2013-04-25 | 201618355 | 0.920 ppb |
| 2013-04-25 | 201630211 | 1.05 ppb |
| 2013-04-26 | 201616725 | 0.160 ppb |
| 2013-04-26 | 201630213 | 0.270 ppb |
| 2013-04-26 | 201630212 | 0.0870 ppb |
| 2013-04-26 | 201616958 | ND |
| 2013-04-29 | 201618404 | ND |
| 2013-04-30 | 201604832 | 0.230 ppb |
| 2013-04-30 | 201635798 | ND |
| 2013-05-01 | 201635608 | ND |
| 2013-05-01 | 201635590 | ND |
| 2013-05-01 | 201635597 | ND |
| 2013-05-02 | 201635547 | ND |
| 2013-05-03 | 201635591 | ND |
| 2013-05-03 | 201635620 | ND |
| 2013-05-09 | 201635553 | 0.140 ppb |
| 2013-05-15 | 201632363 | ND |
| 2013-05-15 | 201635609 | ND |
| 2013-05-15 | 201632151 | ND |
| 2013-05-16 | 201633470 | ND |
| 2013-05-16 | 201645650 | 0.120 ppb |
| 2013-05-17 | 201635571 | ND |
| 2013-05-23 | 201635554 | ND |
| 2013-05-23 | 201649578 | 0.0770 ppb |
| 2013-05-24 | 201635572 | ND |
| 2013-05-24 | 201635583 | ND |
| 2013-05-31 | 201632241 | 0.390 ppb |
| 2013-05-31 | 201635565 | ND |
| 2013-05-31 | 201650435 | ND |
| 2013-06-05 | 201636526 | ND |
| 2013-06-05 | 201640344 | ND |
| 2013-06-06 | 201632230 | 0.350 ppb |
| 2013-06-07 | 201635912 | ND |
| 2013-06-07 | 201650441 | ND |
| 2013-06-12 | 201638169 | ND |
| 2013-06-13 | 201636408 | 0.850 ppb |
| 2013-06-13 | 201632127 | 0.110 ppb |
| 2013-06-14 | 201647891 | 0.0910 ppb |
| 2013-06-14 | 201636320 | 1.36 ppb |
| 2013-06-17 | 201660195 | 0.280 ppb |
| 2013-06-20 | 201643649 | 0.200 ppb |
| 2013-06-21 | 201650429 | 0.170 ppb |
| 2013-06-21 | 201641158 | 0.230 ppb |
| 2013-06-26 | 201634004 | ND |
| 2013-06-26 | 201628781 | 0.350 ppb |
| 2013-06-26 | 201650452 | 0.160 ppb |
| 2013-07-03 | 201671852 | 0.590 ppb |
| 2013-07-05 | 201671520 | ND |
| 2013-07-05 | 201647639 | ND |
| 2013-07-10 | 201662719 | 0.270 ppb |
| 2013-07-11 | 201678041 | 0.540 ppb |
| 2013-07-17 | 201673214 | 0.420 ppb |
| 2013-07-17 | 201662665 | 0.410 ppb |
| 2013-07-18 | 201647712 | ND |
| 2013-07-18 | 201673221 | 0.280 ppb |
| 2013-07-19 | 201673203 | 0.270 ppb |
| 2013-07-19 | 201667198 | ND |
| 2013-07-23 | 201679029 | 0.390 ppb |
| 2013-07-24 | 201673202 | ND |
| 2013-07-24 | 201667421 | ND |
| 2013-07-25 | 201673220 | 0.440 ppb |
| 2013-07-25 | 201668305 | 0.460 ppb |
| 2013-07-31 | 201670997 | 0.790 ppb |
| 2013-07-31 | 201670999 | ND |
| 2013-08-02 | 201689435 | 0.290 ppb |
| 2013-08-06 | 201690935 | ND |
| 2013-08-07 | 201684279 | 0.0950 ppb |
| 2013-08-07 | 201690927 | ND |
| 2013-08-09 | 201689679 | 1.59 ppb |
| 2013-08-09 | 201689166 | 0.350 ppb |
| 2013-08-13 | 201684998 | 1.73 ppb |
| 2013-08-14 | 201688423 | 1.13 ppb |
| 2013-08-16 | 201687899 | 0.600 ppb |
| 2013-08-20 | 201687526 | ND |
| 2013-08-21 | 201666718 | 0.110 ppb |
| 2013-08-23 | 201684303 | ND |
| 2013-08-23 | 201666665 | ND |
| 2013-08-27 | 201684958 | 0.150 ppb |
| 2013-08-27 | 201690936 | 0.0860 ppb |
| 2013-08-30 | 201689176 | 1.24 ppb |
| 2013-08-30 | 201685004 | ND |
| 2013-09-04 | 201703953 | 0.790 ppb |
| 2013-09-04 | 201701816 | 1.17 ppb |
| 2013-09-04 | 201703979 | 1.33 ppb |
| 2013-09-05 | 201703063 | 0.170 ppb |
| 2013-09-05 | 201701773 | ND |
| 2013-09-06 | 201702994 | 2.72 ppb |
| 2013-09-16 | 201703997 | 0.250 ppb |
| 2013-09-16 | 201701923 | 0.460 ppb |
| 2013-09-16 | 201702339 | ND |
| 2013-09-17 | 201703973 | ND |
| 2013-09-17 | 201703947 | ND |
| 2013-09-17 | 201698426 | ND |
| 2013-09-18 | 201703972 | ND |
| 2013-09-18 | 201699601 | 0.670 ppb |
| 2013-09-19 | 201703960 | ND |
| 2013-09-19 | 201702441 | 0.210 ppb |
| 2013-09-19 | 201703959 | ND |
| 2013-09-26 | 201703996 | 0.640 ppb |
| 2013-09-27 | 201701834 | 0.390 ppb |
| 2013-09-27 | 201699637 | 1.13 ppb |
| 2013-09-27 | 201699111 | 0.160 ppb |
| 2013-09-27 | 201700237 | 0.890 ppb |
| 2013-09-27 | 201703985 | 0.320 ppb |
| 2013-10-07 | 201718887 | 0.140 ppb |
| 2013-10-07 | 201718869 | 0.420 ppb |
| 2013-10-07 | 201718870 | ND |
| 2013-10-07 | 201718876 | 0.400 ppb |
| 2013-10-08 | 201720912 | ND |
| 2013-10-09 | 201717013 | 1.10 ppb |
| 2013-10-09 | 201720867 | ND |
| 2013-10-09 | 201715539 | ND |
| 2013-10-10 | 201720861 | 0.140 ppb |
| 2013-10-11 | 201719442 | 0.170 ppb |
| 2013-10-11 | 201715602 | ND |
| 2013-10-17 | 201720807 | 0.220 ppb |
| 2013-10-17 | 201720844 | 0.330 ppb |
| 2013-10-18 | 201720266 | ND |
| 2013-10-18 | 201720814 | 0.570 ppb |
| 2013-10-31 | 201735601 | 0.0810 ppb |
| 2013-11-04 | 201735663 | 0.130 ppb |
| 2013-11-05 | 201719584 | 0.210 ppb |
| 2013-11-05 | 201720813 | 0.800 ppb |
| 2013-11-05 | 201715203 | ND |
| 2013-11-06 | 201734529 | ND |
| 2013-11-06 | 201730201 | ND |
| 2013-11-06 | 201737974 | ND |
| 2013-11-06 | 201737963 | ND |
| 2013-11-06 | 201737986 | ND |
| 2013-11-07 | 201737944 | ND |
| 2013-11-07 | 201727623 | ND |
| 2013-11-08 | 201720797 | 0.180 ppb |
| 2013-11-08 | 201737921 | 0.300 ppb |
| 2013-11-08 | 201730307 | 0.420 ppb |
| 2013-11-08 | 201720868 | 0.120 ppb |
| 2013-11-13 | 201730397 | ND |
| 2013-11-13 | 201737975 | ND |
| 2013-11-13 | 201730207 | ND |
| 2013-11-14 | 201720825 | ND |
| 2013-11-14 | 201737932 | ND |
| 2013-11-19 | 201737951 | ND |
| 2013-11-20 | 201712858 | 0.400 ppb |
| 2013-11-20 | 201720850 | 0.210 ppb |
| 2013-11-20 | 201720826 | ND |
| 2013-11-20 | 201720838 | 4.34 ppb |
| 2013-11-20 | 201720837 | ND |
| 2013-11-20 | 201716920 | ND |
| 2013-11-21 | 201737950 | ND |
| 2013-11-22 | 201735414 | ND |
| 2013-11-22 | 201737933 | ND |
| 2013-11-27 | 201719471 | ND |
| 2013-12-04 | 201738638 | ND |
| 2013-12-04 | 201734659 | ND |
| 2013-12-05 | 201730185 | 0.1000 ppb |
| 2013-12-06 | 201730296 | 0.160 ppb |
| 2013-12-09 | 201752257 | ND |
| 2013-12-11 | 201740135 | ND |
| 2013-12-12 | 201737962 | ND |
| 2013-12-12 | 201734516 | 0.780 ppb |
| 2013-12-13 | 201749179 | ND |
| 2013-12-13 | 201734395 | 1.85 ppb |
| 2013-12-18 | 201736513 | ND |
| 2013-12-18 | 201730999 | 0.410 ppb |
| 2013-12-18 | 201749510 | 0.0710 ppb |
| 2013-12-19 | 201742791 | 0.180 ppb |
| 2013-12-20 | 201762654 | 0.460 ppb |
| 2013-12-20 | 201745711 | 0.140 ppb |
| 2013-12-20 | 201743231 | 0.180 ppb |
| 2013-12-26 | 201734010 | ND |
| 2013-12-26 | 201747678 | ND |
| 2014-01-02 | 201766626 | ND |
| 2014-01-06 | 201761349 | ND |
| 2014-01-08 | 201766202 | 0.210 ppb |
| 2014-01-08 | 201766049 | 0.170 ppb |
| 2014-01-08 | 201766613 | 0.230 ppb |
| 2014-01-16 | 201766624 | ND |
| 2014-01-17 | 201766595 | ND |
| 2014-01-17 | 201766589 | 0.590 ppb |
| 2014-01-17 | 201766601 | 0.0870 ppb |
| 2014-01-17 | 201766607 | ND |
| 2014-01-23 | 201764359 | ND |
| 2014-01-23 | 201763419 | 0.0950 ppb |
| 2014-01-24 | 201765722 | ND |
| 2014-01-24 | 201761224 | 1.05 ppb |
| 2014-01-28 | 201766625 | ND |
| 2014-01-29 | 201763320 | ND |
| 2014-01-29 | 201763984 | 0.200 ppb |
| 2014-02-05 | 201774800 | ND |
| 2014-02-05 | 201774770 | ND |
| 2014-02-05 | 201774764 | 0.130 ppb |
| 2014-02-06 | 201774794 | 0.330 ppb |
| 2014-02-06 | 201774758 | 0.0890 ppb |
| 2014-02-07 | 201774782 | 0.440 ppb |
| 2014-02-07 | 201774752 | ND |
| 2014-02-14 | 201774740 | ND |
| 2014-02-14 | 201774734 | 0.490 ppb |
| 2014-02-17 | 201776380 | ND |
| 2014-02-19 | 201774746 | 0.440 ppb |
| 2014-02-19 | 201776387 | 0.280 ppb |
| 2014-02-20 | 201774806 | 0.140 ppb |
| 2014-02-21 | 201774776 | 0.0750 ppb |
| 2014-02-21 | 201774788 | ND |
| 2014-02-21 | 201774812 | ND |
| 2014-02-26 | 201790532 | ND |
| 2014-03-05 | 201790653 | ND |
| 2014-03-05 | 201790593 | ND |
| 2014-03-06 | 201790647 | ND |
| 2014-03-06 | 201790641 | ND |
| 2014-03-07 | 201790581 | ND |
| 2014-03-07 | 201790587 | ND |
| 2014-03-12 | 201790599 | ND |
| 2014-03-13 | 201790623 | ND |
| 2014-03-14 | 201790677 | ND |
| 2014-03-20 | 201790665 | 0.0860 ppb |
| 2014-03-20 | 201790671 | ND |
| 2014-03-21 | 201790635 | ND |
| 2014-03-21 | 201790617 | ND |
| 2014-03-21 | 201790629 | ND |
| 2014-03-21 | 201790659 | ND |
| 2014-03-24 | 201790611 | ND |
| 2014-03-26 | 201790539 | ND |
| 2014-03-26 | 201790557 | ND |
| 2014-03-26 | 201790551 | ND |
| 2014-03-27 | 201805764 | ND |
| 2014-03-27 | 201790575 | ND |
| 2014-03-27 | 201790563 | ND |
| 2014-03-27 | 201790545 | ND |
| 2014-04-01 | 201804917 | ND |
| 2014-04-01 | 201803826 | ND |
| 2014-04-01 | 201801968 | 3.22 ppb |
| 2014-04-03 | 201804969 | ND |
| 2014-04-03 | 201804975 | 0.140 ppb |
| 2014-04-04 | 201804453 | ND |
| 2014-04-04 | 201803888 | ND |
| 2014-04-08 | 201798750 | 0.240 ppb |
| 2014-04-08 | 201800579 | ND |
| 2014-04-09 | 201804961 | 0.0760 ppb |
| 2014-04-10 | 201804955 | 0.120 ppb |
| 2014-04-10 | 201804923 | ND |
| 2014-04-15 | 201803833 | 1.71 ppb |
| 2014-04-15 | 201804933 | 0.870 ppb |
| 2014-04-15 | 201804939 | 0.890 ppb |
| 2014-04-15 | 201800391 | 0.530 ppb |
| 2014-04-17 | 201790605 | 0.120 ppb |
| 2014-04-22 | 201804945 | ND |
| 2014-04-22 | 201800429 | ND |
| 2014-04-23 | 201800717 | 0.110 ppb |
| 2014-04-24 | 201800748 | 0.300 ppb |
| 2014-04-24 | 201800544 | 0.140 ppb |
| 2014-04-25 | 201805008 | ND |
| 2014-04-25 | 201800510 | ND |
| 2014-04-29 | 201803955 | 0.150 ppb |
| 2014-04-29 | 201800563 | 0.110 ppb |
| 2014-05-01 | 201823042 | 0.380 ppb |
| 2014-05-01 | 201821643 | 0.310 ppb |
| 2014-05-01 | 201817543 | ND |
| 2014-05-01 | 201822188 | ND |
| 2014-05-02 | 201821571 | ND |
| 2014-05-07 | 201822253 | ND |
| 2014-05-08 | 201815921 | ND |
| 2014-05-14 | 201823048 | ND |
| 2014-05-14 | 201822143 | ND |
| 2014-05-14 | 201818879 | ND |
| 2014-05-15 | 201819113 | ND |
| 2014-05-15 | 201823022 | 0.0710 ppb |
| 2014-05-15 | 201823034 | ND |
| 2014-05-15 | 201823028 | ND |
| 2014-05-15 | 201822602 | ND |
| 2014-05-16 | 201822033 | ND |
| 2014-05-16 | 201818011 | ND |
| 2014-05-16 | 201823014 | ND |
| 2014-05-20 | 201830439 | ND |
| 2014-05-22 | 201832881 | ND |
| 2014-05-23 | 201834354 | ND |
| 2014-05-28 | 201823006 | ND |
| 2014-05-29 | 201839154 | ND |
| 2014-06-01 | 0.350 ppb* | |
| 2014-06-04 | 201838962 | 0.120 ppb |
| 2014-06-04 | 201838935 | 0.200 ppb |
| 2014-06-11 | 201790533 | 0.200 ppb |
| 2014-06-11 | 201790569 | ND |
| 2014-06-12 | 201846089 | 0.0790 ppb |
| 2014-06-17 | 201847014 | ND |
| 2014-06-18 | 201843540 | ND |
| 2014-06-24 | 201848118 | ND |
| 2014-07-02 | 201854657 | 0.200 ppb |
| 2014-07-02 | 201853415 | 0.170 ppb |
| 2014-07-02 | 201854662 | 0.250 ppb |
| 2014-07-03 | 201851206 | ND |
| 2014-07-03 | 201859129 | ND |
| 2014-07-10 | 201854628 | ND |
| 2014-07-11 | 201853502 | ND |
| 2014-07-11 | 201800503 | ND |
| 2014-07-18 | 201854567 | ND |
| 2014-07-18 | 201852887 | 0.0810 ppb |
| 2014-07-24 | 201854433 | 0.0780 ppb |
| 2014-07-24 | 201854475 | ND |
| 2014-07-24 | 201854481 | 0.0740 ppb |
| 2014-07-24 | 201854487 | ND |
| 2014-07-30 | 201837980 | ND |
| 2014-07-30 | 201850158 | 0.720 ppb |
| 2014-08-01 | 201862584 | ND |
| 2014-08-01 | 201862632 | ND |
| 2014-08-01 | 201862578 | 0.140 ppb |
| 2014-08-05 | 201861530 | 0.440 ppb |
| 2014-08-06 | 201862614 | 0.300 ppb |
| 2014-08-06 | 201862572 | 0.0810 ppb |
| 2014-08-08 | 201854508 | ND |
| 2014-08-08 | 201849108 | 0.200 ppb |
| 2014-08-08 | 201862644 | 0.220 ppb |
| 2014-08-13 | 201862566 | ND |
| 2014-08-13 | 201862560 | 0.460 ppb |
| 2014-08-15 | 201862638 | 0.150 ppb |
| 2014-08-19 | 201869060 | ND |
| 2014-08-20 | 201862626 | 0.0910 ppb |
| 2014-08-20 | 201862620 | ND |
| 2014-08-22 | 201840988 | ND |
| 2014-08-22 | 201862602 | 0.260 ppb |
| 2014-08-22 | 201884404 | 0.280 ppb |
| 2014-09-03 | 201883924 | ND |
| 2014-09-03 | 201888499 | ND |
| 2014-09-05 | 201862596 | 0.0700 ppb |
| 2014-09-05 | 201888487 | ND |
| 2014-09-05 | 201888493 | ND |
| 2014-09-08 | 201888559 | ND |
| 2014-09-08 | 201888553 | ND |
| 2014-09-09 | 201888523 | ND |
| 2014-09-10 | 201888517 | 0.140 ppb |
| 2014-09-10 | 201888511 | ND |
| 2014-09-10 | 201720879 | 0.220 ppb |
| 2014-09-12 | 201888547 | ND |
| 2014-09-12 | 201888811 | ND |
| 2014-09-12 | 201888541 | ND |
| 2014-09-12 | 201888529 | ND |
| 2014-09-15 | 201888505 | ND |
| 2014-09-16 | 201898450 | 0.0820 ppb |
| 2014-09-16 | 201896970 | 0.120 ppb |
| 2014-09-17 | 201884502 | 0.210 ppb |
| 2014-09-17 | 201888864 | ND |
| 2014-09-17 | 201888475 | ND |
| 2014-09-17 | 201888457 | ND |
| 2014-09-17 | 201888451 | ND |
| 2014-09-23 | 201888573 | ND |
| 2014-09-24 | 201888567 | ND |
| 2014-09-24 | 201888022 | ND |
| 2014-09-24 | 201900233 | ND |
| 2014-09-26 | 201896976 | 0.180 ppb |
| 2014-09-26 | 201885197 | ND |
| 2014-09-26 | 201898462 | 0.130 ppb |
| 2014-09-26 | 201898456 | 0.0740 ppb |
| 2014-10-01 | 201888445 | ND |
| 2014-10-01 | 201888481 | ND |
| 2014-10-01 | 201903093 | ND |
| 2014-10-01 | 201907980 | 2.42 ppb |
| 2014-10-01 | 201888463 | ND |
| 2014-10-01 | 201888439 | ND |
| 2014-10-06 | 201848217 | ND |
| 2014-10-09 | 201907986 | ND |
| 2014-10-10 | 201888783 | ND |
| 2014-10-10 | 201903192 | ND |
| 2014-10-10 | 201904986 | ND |
| 2014-10-10 | 201908002 | ND |
| 2014-10-15 | 201900124 | 0.210 ppb |
| 2014-10-15 | 201908052 | ND |
| 2014-10-17 | 201906923 | 0.310 ppb |
| 2014-10-17 | 201905129 | ND |
| 2014-10-20 | 201908018 | ND |
| 2014-10-24 | 201907612 | ND |
| 2014-10-24 | 201908024 | ND |
| 2014-10-27 | 201920419 | ND |
| 2014-10-29 | 201908032 | ND |
| 2014-10-29 | 201908038 | 0.0890 ppb |
| 2014-10-29 | 201908044 | ND |
| 2014-10-30 | 201920788 | ND |
| 2014-10-30 | 201919213 | ND |
| 2014-10-31 | 201904371 | 1.55 ppb |
| 2014-10-31 | 201904945 | 0.540 ppb |
| 2014-10-31 | 201907996 | 1.05 ppb |
| 2014-10-31 | 201924489 | 4.00 ppb |
| 2014-11-04 | 201920742 | ND |
| 2014-11-04 | 201920736 | 0.0750 ppb |
| 2014-11-05 | 201920782 | 0.380 ppb |
| 2014-11-05 | 201920776 | 0.280 ppb |
| 2014-11-05 | 201917386 | ND |
| 2014-11-05 | 201920716 | ND |
| 2014-11-07 | 201920730 | ND |
| 2014-11-07 | 201901786 | ND |
| 2014-11-10 | 201926831 | ND |
| 2014-11-10 | 201914153 | ND |
| 2014-11-12 | 201920748 | ND |
| 2014-11-14 | 201920019 | ND |
| 2014-11-14 | 201920012 | ND |
| 2014-11-17 | 201931398 | ND |
| 2014-11-18 | 201922192 | ND |
| 2014-11-20 | 201920756 | ND |
| 2014-11-20 | 201920768 | ND |
| 2014-11-20 | 201920762 | ND |
| 2014-11-21 | 201920722 | ND |
| 2014-12-01 | 201938577 | ND |
| 2015-03-12 | 201975521 | ND |
| 2015-03-12 | 201975539 | ND |
| 2015-06-01 | 0.343 ppb* | |
| 2015-06-09 | 202029373 | 0.300 ppb |
| 2015-06-09 | 201995729 | ND |
| 2015-06-09 | 202029502 | ND |
| 2015-06-09 | 202029512 | ND |
| 2015-06-09 | 202029690 | ND |
| 2015-06-10 | 202030813 | ND |
| 2015-07-27 | 202051941 | ND |
| 2015-07-27 | 202051935 | ND |
| 2015-09-15 | 202071539 | ND |
| 2016-06-01 | 0.414 ppb* | |
| 2017-06-01 | 0.396 ppb* |
* Sample result is taken from the system's CCR report.