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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.

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

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 81–90 of 241 samples, newest first — collected August 8, 2017 to April 11, 2018. The summary above covers all 241.

29 results from the 10 samples listed here: 17 detected, 12 not detected. Across the whole record it is 401 of 1,147. 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 2 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 81 to 90 of 241 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 11, 2018 12:25
Sampling point
TF102
Sample type
Routine
Lab sample
180412-013NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 11, 2018 12:25, 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 Apr 11, 2018 12:25, 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 Apr 11, 2018 12:25, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Apr 11, 2018 12:21
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180412-012NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 11, 2018 12:21, 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 Apr 11, 2018 12:21, 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 Apr 11, 2018 12:21, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Nov 27, 2017 11:47
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
171128-024HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Nov 27, 2017 11:47, sampling point SMH Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.014 mg/l , sample collected Nov 27, 2017 11:47, sampling point SMH Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.014 mg/l , sample collected Nov 27, 2017 11:47, sampling point SMH Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 27, 2017 11:47, sampling point SMH Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 27, 2017 11:47, sampling point SMH Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.028 mg/l , sample collected Nov 27, 2017 11:47, sampling point SMH Total Haloacetic Acids (Haa5) 2456 Jan 1, 2017 – Dec 31, 2017
Collected
Nov 27, 2017 11:08
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
171128-018TH
Laboratory
MSDH Lab
53 ug/l , sample collected Nov 27, 2017 11:08, sampling point SMT Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 27, 2017 11:08, sampling point SMT Bromoform 2942 EPA method 524.2 Not recorded
5.34 ug/l , sample collected Nov 27, 2017 11:08, sampling point SMT Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 27, 2017 11:08, sampling point SMT Dibromochloromethane 2944 EPA method 524.2 Not recorded
58 ug/l , sample collected Nov 27, 2017 11:08, sampling point SMT TTHM 2950 Jan 1, 2017 – Dec 31, 2017
Collected
Aug 8, 2017 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170809-138PB
Laboratory
MSDH Lab
0.0224 mg/l , sample collected Aug 8, 2017 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0006 mg/l , sample collected Aug 8, 2017 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 8, 2017 05:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170809-137PB
Laboratory
MSDH Lab
0.0363 mg/l , sample collected Aug 8, 2017 05:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0012 mg/l , sample collected Aug 8, 2017 05:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 8, 2017 06:28
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170809-136PB
Laboratory
MSDH Lab
0.026 mg/l , sample collected Aug 8, 2017 06:28, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0007 mg/l , sample collected Aug 8, 2017 06:28, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 8, 2017 06:50
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170809-135PB
Laboratory
MSDH Lab
0.0084 mg/l , sample collected Aug 8, 2017 06:50, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 8, 2017 06:50, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 8, 2017 05:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170809-134PB
Laboratory
MSDH Lab
0.0614 mg/l , sample collected Aug 8, 2017 05:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0007 mg/l , sample collected Aug 8, 2017 05:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 8, 2017 04:55
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170809-172PB
Laboratory
MSDH Lab
0.1739 mg/l , sample collected Aug 8, 2017 04:55, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.001 mg/l , sample collected Aug 8, 2017 04:55, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017

Routine (10).