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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

Chemical and radiological sample results

MS0060013 , City of Mound Bayou

27 of the 58 analytes this system has been tested for have been detected at least once, across 359 samples on record.

The other 31 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.

Across all 359 samples on record, detections range from December 8, 1993 to November 6, 2025. These figures cover the whole record.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

What has been detected, ever

Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.

Every analyte ever detected for City of Mound Bayou, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 112 of 149 results Dec 8, 1993 Sep 1, 2025
Lead 1030 Inorganic Chemical 89 of 149 results Dec 8, 1993 Sep 1, 2025
Barium 1010 Inorganic Chemical 39 of 39 results Jul 30, 2002 Jan 10, 2024
Chromium 1020 Inorganic Chemical 28 of 39 results Jul 30, 2002 Jan 10, 2024
Fluoride 1025 Inorganic Chemical 26 of 27 results Jan 28, 2004 Jan 10, 2024
Selenium 1045 Inorganic Chemical 24 of 39 results Nov 15, 2004 Apr 27, 2011
Nickel 1036 Inorganic Chemical 16 of 35 results Feb 14, 2005 Mar 26, 2008
Arsenic 1005 Inorganic Chemical 14 of 39 results Nov 15, 2004 Apr 27, 2011
TTHM 2950 Organic Chemical 12 of 13 results Jun 28, 2007 Nov 6, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Mar 8, 2012 Oct 5, 2012
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 9 of 11 results Jun 28, 2007 Nov 6, 2025
Chloroform 2941 Organic Chemical 8 of 9 results Jun 28, 2007 Nov 6, 2025
Dichloroacetic Acid 2451 Organic Chemical 5 of 6 results Jul 12, 2011 Nov 6, 2025
Bromodichloromethane 2943 Organic Chemical 5 of 9 results Jun 28, 2007 Nov 6, 2025
Sodium 1052 Inorganic Chemical 5 of 5 results Sep 30, 2019 Dec 4, 2024
P-Dichlorobenzene 2969 Organic Chemical 5 of 39 results May 23, 2007 Jun 30, 2010
Trichloroacetic Acid 2452 Organic Chemical 4 of 6 results Jul 12, 2011 Nov 6, 2025
Dibromochloromethane 2944 Organic Chemical 4 of 9 results Jun 28, 2007 Nov 6, 2025
Thallium, Total 1085 Inorganic Chemical 4 of 39 results Apr 23, 2007 Aug 23, 2007
Dibromoacetic Acid 2454 Organic Chemical 2 of 6 results Jul 12, 2011 Nov 6, 2025
Bromoform 2942 Organic Chemical 2 of 9 results Jun 28, 2007 Jul 12, 2011
Cadmium 1015 Inorganic Chemical 2 of 39 results Feb 14, 2005 Apr 23, 2007
Antimony, Total 1074 Inorganic Chemical 2 of 39 results Jan 17, 2006 Jan 17, 2006
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 54 results Jan 18, 2017 Jan 18, 2017
Nitrate 1040 Inorganic Chemical 1 of 54 results Jan 18, 2017 Jan 18, 2017
Mercury 1035 Inorganic Chemical 1 of 39 results Apr 23, 2007 Apr 23, 2007
Carbon Tetrachloride 2982 Organic Chemical 1 of 39 results Mar 20, 2007 Mar 20, 2007

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 31–40 of 359 samples, newest first — collected August 25, 2021 to June 22, 2022. The summary above covers all 359.

20 results from the 10 samples listed here: 13 detected, 7 not detected. Across the whole record it is 431 of 1,885. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 8 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for City of Mound Bayou, every result from 31 to 40 of 359 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Jun 22, 2022 08:00
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-220623-017
Laboratory
MSDH Lab
0.0419 mg/l , sample collected Jun 22, 2022 08:00, sampling point LC0003 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 22, 2022 08:00, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 22, 2022 04:30
Sampling point
LC0004 Location withheld
Sample type
Routine
Lab sample
PB-220623-016
Laboratory
MSDH Lab
0.0345 mg/l , sample collected Jun 22, 2022 04:30, sampling point LC0004 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.5 ug/l , sample collected Jun 22, 2022 04:30, sampling point LC0004 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 22, 2022 07:00
Sampling point
LC0009 Location withheld
Sample type
Routine
Lab sample
PB-220623-015
Laboratory
MSDH Lab
0.119 mg/l , sample collected Jun 22, 2022 07:00, sampling point LC0009 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
1.6 ug/l , sample collected Jun 22, 2022 07:00, sampling point LC0009 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 22, 2022 07:00
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-220623-014
Laboratory
MSDH Lab
0.0582 mg/l , sample collected Jun 22, 2022 07:00, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 22, 2022 07:00, sampling point LC0010 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 22, 2022 12:00
Sampling point
LC0013 Location withheld
Sample type
Routine
Lab sample
PB-220623-013
Laboratory
MSDH Lab
0.0795 mg/l , sample collected Jun 22, 2022 12:00, sampling point LC0013 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 22, 2022 12:00, sampling point LC0013 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 22, 2022 06:00
Sampling point
LC0014 Location withheld
Sample type
Routine
Lab sample
PB-220623-012
Laboratory
MSDH Lab
0.0421 mg/l , sample collected Jun 22, 2022 06:00, sampling point LC0014 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.6 ug/l , sample collected Jun 22, 2022 06:00, sampling point LC0014 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 22, 2022 06:35
Sampling point
LC0019 Location withheld
Sample type
Routine
Lab sample
PB-220623-011
Laboratory
MSDH Lab
0.134 mg/l , sample collected Jun 22, 2022 06:35, sampling point LC0019 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.5 ug/l , sample collected Jun 22, 2022 06:35, sampling point LC0019 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 22, 2022 05:45
Sampling point
LC0020 Location withheld
Sample type
Routine
Lab sample
PB-220623-010
Laboratory
MSDH Lab
0.144 mg/l , sample collected Jun 22, 2022 05:45, sampling point LC0020 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 22, 2022 05:45, sampling point LC0020 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Oct 28, 2021 10:20
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-211028-009
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 28, 2021 10:20, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Oct 28, 2021 10:20, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Oct 28, 2021 10:20, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Collected
Aug 25, 2021 16:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-210826-029
Laboratory
MSDH Lab
13.7 ug/l , sample collected Aug 25, 2021 16:00, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2021

Routine (10).