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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 71–80 of 359 samples, newest first — collected May 23, 2018 to April 3, 2019. The summary above covers all 359.

58 results from the 10 samples listed here: 5 detected, 53 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.

Chemical and radiological sample results for City of Mound Bayou, every result from 71 to 80 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
Apr 3, 2019 14:48
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
190405-001CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 3, 2019 14:48, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
Jan 30, 2019 14:30
Sampling point
TF103
Sample type
Routine
Lab sample
190131-045NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 30, 2019 14:30, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 30, 2019 14:30, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 30, 2019 14:30, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Nov 7, 2018 14:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
181108-027NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 7, 2018 14:30, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 7, 2018 14:30, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 7, 2018 14:30, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Nov 7, 2018 14:30
Sampling point
TF103
Sample type
Routine
Lab sample
181108-026NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 7, 2018 14:30, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 7, 2018 14:30, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 7, 2018 14:30, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Nov 7, 2018 14:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
181108-025NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 7, 2018 14:30, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 7, 2018 14:30, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 7, 2018 14:30, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Sep 26, 2018 02:52
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180928-002IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 02:52, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0188 mg/l , sample collected Sep 26, 2018 02:52, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 02:52, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 02:52, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.351 mg/l , sample collected Sep 26, 2018 02:52, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 02:52, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 02:52, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 02:52, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 02:52, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 02:52, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 02:52, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Sep 26, 2018 03:09
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
180928-001IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 03:09, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0188 mg/l , sample collected Sep 26, 2018 03:09, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 03:09, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0041 mg/l , sample collected Sep 26, 2018 03:09, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.349 mg/l , sample collected Sep 26, 2018 03:09, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 03:09, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 03:09, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 03:09, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 03:09, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 03:09, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2018 03:09, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Jun 26, 2018 13:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180628-009RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 26, 2018 13:15, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
Jun 26, 2018 13:20
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
180628-008RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 26, 2018 13:20, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
May 23, 2018 02:46
Sampling point
TF103
Sample type
Routine
Lab sample
180524-013VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Dichloromethane 2964 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Benzene 2990 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Toluene 2991 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 23, 2018 02:46, sampling point TF103 Styrene 2996 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020

Routine (10).