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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 41–50 of 241 samples, newest first — collected August 12, 2021 to November 28, 2022. The summary above covers all 241.

78 results from the 10 samples listed here: 17 detected, 61 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.

Chemical and radiological sample results for Central Yazoo #3 Mechanicsbrg, every result from 41 to 50 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
Nov 28, 2022 09:42
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-221129-009
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2022 09:42, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0037 mg/l , sample collected Nov 28, 2022 09:42, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2022 09:42, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2022 09:42, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.182 mg/l , sample collected Nov 28, 2022 09:42, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2022 09:42, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2022 09:42, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Nov 28, 2022 09:42, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2022 09:42, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2022 09:42, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2022 09:42, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Oct 24, 2022 10:34
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-221024-006
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 24, 2022 10:34, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Oct 24, 2022 11:01
Sampling point
TF102
Sample type
Routine
Lab sample
VO-221025-007
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 11:01, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Oct 24, 2022 10:42
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
VO-221025-006
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 24, 2022 10:42, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Mar 28, 2022 10:16
Sampling point
TF102
Sample type
Routine
Lab sample
NI-220328-016
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 28, 2022 10:16, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 28, 2022 10:16, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 28, 2022 10:16, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Mar 28, 2022 09:58
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-220328-017
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 28, 2022 09:58, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 28, 2022 09:58, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 28, 2022 09:58, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Sep 21, 2021 09:30
Sampling point
TF102
Sample type
Routine
Lab sample
RU-210922-020
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 21, 2021 09:30, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
Sep 21, 2021 09:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
RU-210922-019
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 21, 2021 09:40, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
Aug 12, 2021 10:25
Sampling point
WL001 Well W001
Sample type
Routine
Lab sample
7PC-210814-002
Laboratory
MSDH Lab
0.712 mg/l , sample collected Aug 12, 2021 10:25, sampling point WL001 Calcium 1016 EPA method 200.7 Not recorded
1.95 mg/l , sample collected Aug 12, 2021 10:25, sampling point WL001 Chloride 1017 EPA method 300.0 Not recorded
0.18 mg/l , sample collected Aug 12, 2021 10:25, sampling point WL001 Fluoride 1025 EPA method 300.0 Not recorded
114 mg/l , sample collected Aug 12, 2021 10:25, sampling point WL001 Sodium 1052 EPA method 200.7 Not recorded
3.8 mg/l , sample collected Aug 12, 2021 10:25, sampling point WL001 Sulfate 1055 EPA method 300.0 Not recorded
400 umho/cm , sample collected Aug 12, 2021 10:25, sampling point WL001 Conductivity @ 25 C Umhos/CM 1064 EPA method 2510B Not recorded
15 cu , sample collected Aug 12, 2021 10:25, sampling point WL001 Color 1905 EPA method 2120B Not recorded
197 mg/l , sample collected Aug 12, 2021 10:25, sampling point WL001 Alkalinity, Total 1927 EPA method 2320B Not recorded
Collected
Aug 12, 2021 10:45
Sampling point
WL002
Sample type
Routine
Lab sample
7PC-210814-001
Laboratory
MSDH Lab
0.185 mg/l , sample collected Aug 12, 2021 10:45, sampling point WL002 Calcium 1016 EPA method 200.7 Not recorded
1.62 mg/l , sample collected Aug 12, 2021 10:45, sampling point WL002 Chloride 1017 EPA method 300.0 Not recorded
0.119 mg/l , sample collected Aug 12, 2021 10:45, sampling point WL002 Fluoride 1025 EPA method 300.0 Not recorded
86.4 mg/l , sample collected Aug 12, 2021 10:45, sampling point WL002 Sodium 1052 EPA method 200.7 Not recorded
6.83 mg/l , sample collected Aug 12, 2021 10:45, sampling point WL002 Sulfate 1055 EPA method 300.0 Not recorded
325 umho/cm , sample collected Aug 12, 2021 10:45, sampling point WL002 Conductivity @ 25 C Umhos/CM 1064 EPA method 2510B Not recorded
Not detected below 10 cu Minimum Reporting Level , sample collected Aug 12, 2021 10:45, sampling point WL002 Color 1905 EPA method 2120B Not recorded
161 mg/l , sample collected Aug 12, 2021 10:45, sampling point WL002 Alkalinity, Total 1927 EPA method 2320B Not recorded

Routine (10).