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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

MS0150001 , Copiah W/A - Bayou Pierre #1

23 of the 62 analytes this system has been tested for have been detected at least once, across 466 samples on record.

The other 39 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 466 samples on record, detections range from May 4, 1994 to June 2, 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 Copiah W/A - Bayou Pierre #1, 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 153 of 223 results Dec 27, 2001 Sep 30, 2025
Lead 1030 Inorganic Chemical 127 of 223 results May 4, 1994 Sep 30, 2025
Barium 1010 Inorganic Chemical 34 of 34 results Nov 20, 2003 Feb 5, 2025
Fluoride 1025 Inorganic Chemical 31 of 35 results Nov 20, 2003 Feb 5, 2025
Nickel 1036 Inorganic Chemical 14 of 34 results Nov 20, 2003 May 23, 2022
Chromium 1020 Inorganic Chemical 13 of 34 results Nov 20, 2003 Feb 5, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 15 results Mar 22, 2012 Oct 9, 2012
Sodium 1052 Inorganic Chemical 9 of 9 results Oct 28, 2019 Oct 15, 2024
TTHM 2950 Organic Chemical 7 of 12 results Jun 27, 2007 Jun 2, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 13 results Jun 27, 2007 Mar 13, 2024
Sulfate 1055 Inorganic Chemical 7 of 7 results Nov 20, 2003 Mar 11, 2021
Chloroform 2941 Organic Chemical 3 of 8 results Aug 27, 2014 Jun 2, 2026
Bromodichloromethane 2943 Organic Chemical 3 of 8 results Aug 27, 2014 Jun 2, 2026
Dibromochloromethane 2944 Organic Chemical 3 of 8 results Aug 27, 2014 Jun 2, 2026
Cadmium 1015 Inorganic Chemical 3 of 34 results Mar 2, 2005 Mar 2, 2005
Selenium 1045 Inorganic Chemical 3 of 34 results Mar 2, 2005 Mar 2, 2005
Dichloroacetic Acid 2451 Organic Chemical 2 of 7 results Aug 27, 2014 Aug 11, 2020
Trichloroacetic Acid 2452 Organic Chemical 2 of 7 results Aug 27, 2014 Aug 11, 2020
Xylenes, Total 2955 Organic Chemical 2 of 53 results Dec 28, 2004 Jan 24, 2005
Ethylbenzene 2992 Organic Chemical 2 of 53 results Dec 28, 2004 Jan 24, 2005
Chloride 1017 Inorganic Chemical 1 of 1 result Mar 11, 2021 Mar 11, 2021
Conductivity @ 25 C Umhos/CM 1064 Water Quality 1 of 1 result Mar 11, 2021 Mar 11, 2021
Alkalinity, Total 1927 Water Quality 1 of 1 result Mar 11, 2021 Mar 11, 2021

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 466 samples, newest first — collected October 15, 2024 to October 15, 2024. The summary above covers all 466.

20 results from the 10 samples listed here: 20 detected, 0 not detected. Across the whole record it is 438 of 2,348. 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 10 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 Copiah W/A - Bayou Pierre #1, every result from 41 to 50 of 466 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
Oct 15, 2024 06:15
Sampling point
LC0016 Location withheld
Sample type
Routine
Lab sample
PB-241016-011
Laboratory
MSDH Lab
0.005 mg/l , sample collected Oct 15, 2024 06:15, sampling point LC0016 Copper, Free 1022 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
0.5 ug/l , sample collected Oct 15, 2024 06:15, sampling point LC0016 Lead 1030 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
Collected
Oct 15, 2024 08:30
Sampling point
LC0017 Location withheld
Sample type
Routine
Lab sample
PB-241016-010
Laboratory
MSDH Lab
0.0051 mg/l , sample collected Oct 15, 2024 08:30, sampling point LC0017 Copper, Free 1022 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
0.5 ug/l , sample collected Oct 15, 2024 08:30, sampling point LC0017 Lead 1030 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
Collected
Oct 15, 2024 08:15
Sampling point
LC0018 Location withheld
Sample type
Routine
Lab sample
PB-241016-009
Laboratory
MSDH Lab
0.005 mg/l , sample collected Oct 15, 2024 08:15, sampling point LC0018 Copper, Free 1022 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
0.5 ug/l , sample collected Oct 15, 2024 08:15, sampling point LC0018 Lead 1030 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
Collected
Oct 15, 2024 07:00
Sampling point
LC0020 Location withheld
Sample type
Routine
Lab sample
PB-241016-018
Laboratory
MSDH Lab
0.0052 mg/l , sample collected Oct 15, 2024 07:00, sampling point LC0020 Copper, Free 1022 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
0.6 ug/l , sample collected Oct 15, 2024 07:00, sampling point LC0020 Lead 1030 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
Collected
Oct 15, 2024 09:00
Sampling point
LC0021 Location withheld
Sample type
Routine
Lab sample
PB-241016-017
Laboratory
MSDH Lab
0.0049 mg/l , sample collected Oct 15, 2024 09:00, sampling point LC0021 Copper, Free 1022 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
0.5 ug/l , sample collected Oct 15, 2024 09:00, sampling point LC0021 Lead 1030 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
Collected
Oct 15, 2024 08:30
Sampling point
LC0022 Location withheld
Sample type
Routine
Lab sample
PB-241016-016
Laboratory
MSDH Lab
0.0053 mg/l , sample collected Oct 15, 2024 08:30, sampling point LC0022 Copper, Free 1022 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
0.7 ug/l , sample collected Oct 15, 2024 08:30, sampling point LC0022 Lead 1030 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
Collected
Oct 15, 2024 06:00
Sampling point
LC0024 Location withheld
Sample type
Routine
Lab sample
PB-241016-015
Laboratory
MSDH Lab
0.0052 mg/l , sample collected Oct 15, 2024 06:00, sampling point LC0024 Copper, Free 1022 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
0.6 ug/l , sample collected Oct 15, 2024 06:00, sampling point LC0024 Lead 1030 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
Collected
Oct 15, 2024 08:15
Sampling point
LC0025 Location withheld
Sample type
Routine
Lab sample
PB-241016-014
Laboratory
MSDH Lab
0.005 mg/l , sample collected Oct 15, 2024 08:15, sampling point LC0025 Copper, Free 1022 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
0.5 ug/l , sample collected Oct 15, 2024 08:15, sampling point LC0025 Lead 1030 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
Collected
Oct 15, 2024 07:30
Sampling point
LC0026 Location withheld
Sample type
Routine
Lab sample
PB-241016-023
Laboratory
MSDH Lab
0.0055 mg/l , sample collected Oct 15, 2024 07:30, sampling point LC0026 Copper, Free 1022 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
0.7 ug/l , sample collected Oct 15, 2024 07:30, sampling point LC0026 Lead 1030 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
Collected
Oct 15, 2024 06:30
Sampling point
LC0027 Location withheld
Sample type
Routine
Lab sample
PB-241016-022
Laboratory
MSDH Lab
0.0053 mg/l , sample collected Oct 15, 2024 06:30, sampling point LC0027 Copper, Free 1022 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024
0.6 ug/l , sample collected Oct 15, 2024 06:30, sampling point LC0027 Lead 1030 EPA method 200.8 Jul 1, 2024 – Dec 31, 2024

Routine (10).