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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

MS0820030 , Central Yazoo #3 Mechanicsbrg

27 of the 62 analytes this system has been tested for have been detected at least once, across 241 samples on record.

The other 35 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 241 samples on record, detections range from November 5, 2003 to July 22, 2026. These figures cover the whole record; the list of samples further down is narrowed.

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 Central Yazoo #3 Mechanicsbrg, 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 62 of 62 results Aug 21, 2007 Aug 15, 2023
TTHM 2950 Organic Chemical 38 of 39 results Aug 30, 2004 Jun 9, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 36 of 36 results Aug 30, 2004 Sep 16, 2025
Chloroform 2941 Organic Chemical 32 of 32 results May 11, 2009 Jun 9, 2026
Bromodichloromethane 2943 Organic Chemical 31 of 32 results May 11, 2009 Jun 9, 2026
Dichloroacetic Acid 2451 Organic Chemical 31 of 31 results May 11, 2009 Sep 16, 2025
Trichloroacetic Acid 2452 Organic Chemical 31 of 31 results May 11, 2009 Sep 16, 2025
Lead 1030 Inorganic Chemical 22 of 62 results Aug 21, 2007 Aug 14, 2023
Fluoride 1025 Inorganic Chemical 19 of 20 results Nov 5, 2003 Apr 7, 2025
Barium 1010 Inorganic Chemical 18 of 18 results Nov 5, 2003 Apr 7, 2025
Chromium 1020 Inorganic Chemical 15 of 18 results Apr 5, 2004 Apr 7, 2025
Dibromochloromethane 2944 Organic Chemical 14 of 32 results Jun 20, 2011 Jun 9, 2026
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Mar 13, 2012 Oct 3, 2012
Sodium 1052 Inorganic Chemical 8 of 8 results Sep 18, 2019 Jul 22, 2026
Nickel 1036 Inorganic Chemical 7 of 18 results Dec 4, 2006 Apr 7, 2025
Sulfate 1055 Inorganic Chemical 4 of 4 results Nov 5, 2003 Aug 12, 2021
Monochloroacetic Acid 2450 Organic Chemical 4 of 31 results Nov 9, 2009 Feb 27, 2013
Monobromoacetic Acid 2453 Organic Chemical 3 of 31 results Nov 7, 2012 Nov 2, 2020
Calcium 1016 Inorganic Chemical 2 of 2 results Aug 12, 2021 Aug 12, 2021
Chloride 1017 Inorganic Chemical 2 of 2 results Aug 12, 2021 Aug 12, 2021
Conductivity @ 25 C Umhos/CM 1064 Water Quality 2 of 2 results Aug 12, 2021 Aug 12, 2021
Alkalinity, Total 1927 Water Quality 2 of 2 results Aug 12, 2021 Aug 12, 2021
Arsenic 1005 Inorganic Chemical 2 of 18 results Apr 18, 2006 May 10, 2010
Selenium 1045 Inorganic Chemical 2 of 18 results Apr 18, 2006 Dec 4, 2006
Nitrite 1041 Inorganic Chemical 2 of 41 results Aug 17, 2006 Aug 17, 2006
Color 1905 Water Quality 1 of 2 results Aug 12, 2021 Aug 12, 2021
Cyanide 1024 Inorganic Chemical 1 of 18 results Jun 12, 2017 Jun 12, 2017

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The table below lists 11–19 of 19 samples, newest first — collected October 7, 2024 to April 14, 2025. The summary above covers all 19.

60 results from the 9 samples listed here: 34 detected, 26 not detected. 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 4 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 Central Yazoo #3 Mechanicsbrg, every result from 11 to 19 of 19 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 14, 2025 13:03
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-250415-046
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 14, 2025 13:03, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 14, 2025 13:03, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 14, 2025 13:03, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Apr 7, 2025 08:58
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250408-008
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 7, 2025 08:58, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0036 mg/l , sample collected Apr 7, 2025 08:58, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 7, 2025 08:58, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0027 mg/l , sample collected Apr 7, 2025 08:58, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.186 mg/l , sample collected Apr 7, 2025 08:58, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
0.0017 mg/l , sample collected Apr 7, 2025 08:58, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 7, 2025 08:58, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 7, 2025 08:58, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 7, 2025 08:58, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 7, 2025 08:58, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Mar 24, 2025 13:27
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
TH-250325-012
Laboratory
MSDH Lab
22.9 ug/l , sample collected Mar 24, 2025 13:27, sampling point SMT TTHM 2950 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Collected
Mar 24, 2025 13:51
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
HA-250325-007
Laboratory
MSDH Lab
18 ug/l , sample collected Mar 24, 2025 13:51, sampling point SMH Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Dec 31, 2025
Collected
Feb 18, 2025 09:55
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-138576-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Feb 18, 2025 09:55, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
3.5 ug/l , sample collected Feb 18, 2025 09:55, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
7.3 ug/l , sample collected Feb 18, 2025 09:55, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 18, 2025 09:55, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 18, 2025 09:55, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
10.8 ug/l , sample collected Feb 18, 2025 09:55, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Mar 31, 2025
37 ug/l , sample collected Feb 18, 2025 09:55, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 18, 2025 09:55, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
6.2 ug/l , sample collected Feb 18, 2025 09:55, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.4 ug/l , sample collected Feb 18, 2025 09:55, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
44.6 ug/l , sample collected Feb 18, 2025 09:55, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Mar 31, 2025
Collected
Feb 18, 2025 10:20
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-138576-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Feb 18, 2025 10:20, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
8.5 ug/l , sample collected Feb 18, 2025 10:20, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
7 ug/l , sample collected Feb 18, 2025 10:20, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 18, 2025 10:20, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 18, 2025 10:20, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
15.5 ug/l , sample collected Feb 18, 2025 10:20, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Mar 31, 2025
16 ug/l , sample collected Feb 18, 2025 10:20, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 18, 2025 10:20, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
3.6 ug/l , sample collected Feb 18, 2025 10:20, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
0.89 ug/l , sample collected Feb 18, 2025 10:20, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
20.49 ug/l , sample collected Feb 18, 2025 10:20, sampling point SM2 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Mar 31, 2025
Collected
Nov 21, 2024 09:47
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-129240-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 09:47, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
7.9 ug/l , sample collected Nov 21, 2024 09:47, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
4 ug/l , sample collected Nov 21, 2024 09:47, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 09:47, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 09:47, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
11.9 ug/l , sample collected Nov 21, 2024 09:47, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2024 – Dec 31, 2024
22 ug/l , sample collected Nov 21, 2024 09:47, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 09:47, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
4.3 ug/l , sample collected Nov 21, 2024 09:47, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.1 ug/l , sample collected Nov 21, 2024 09:47, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
27.4 ug/l , sample collected Nov 21, 2024 09:47, sampling point SM1 TTHM 2950 EPA method 524.2 Oct 1, 2024 – Dec 31, 2024
Collected
Nov 21, 2024 09:23
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-129240-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 09:23, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
5.5 ug/l , sample collected Nov 21, 2024 09:23, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
5.2 ug/l , sample collected Nov 21, 2024 09:23, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 09:23, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 09:23, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
10.7 ug/l , sample collected Nov 21, 2024 09:23, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2024 – Dec 31, 2024
24 ug/l , sample collected Nov 21, 2024 09:23, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 09:23, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
4.8 ug/l , sample collected Nov 21, 2024 09:23, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.2 ug/l , sample collected Nov 21, 2024 09:23, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
30 ug/l , sample collected Nov 21, 2024 09:23, sampling point SM2 TTHM 2950 EPA method 524.2 Oct 1, 2024 – Dec 31, 2024
Collected
Oct 7, 2024 10:30
Sampling point
TF102
Sample type
Routine
Lab sample
CN-241008-011
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 7, 2024 10:30, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2022 – Dec 31, 2024

Routine (9).