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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

MS0150004 , Copiah W/A - Gallman

18 of the 57 analytes this system has been tested for have been detected at least once, across 222 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 222 samples on record, detections range from May 4, 1994 to June 30, 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 Copiah W/A - Gallman, 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 63 of 123 results Dec 27, 2001 Oct 16, 2024
Lead 1030 Inorganic Chemical 35 of 123 results May 4, 1994 Sep 23, 2021
Nitrate-Nitrite 1038 Inorganic Chemical 23 of 36 results Nov 16, 2005 Jun 30, 2026
Nitrate 1040 Inorganic Chemical 23 of 36 results Nov 16, 2005 Jun 30, 2026
Barium 1010 Inorganic Chemical 12 of 12 results Nov 20, 2003 Jun 30, 2026
Nickel 1036 Inorganic Chemical 8 of 11 results Nov 20, 2003 Feb 5, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 13, 2011 Jul 11, 2012
TTHM 2950 Organic Chemical 4 of 11 results May 19, 2004 Aug 27, 2014
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 3 of 12 results Jun 27, 2007 Mar 10, 2025
Sodium 1052 Inorganic Chemical 3 of 3 results Oct 7, 2019 Oct 16, 2024
Chromium 1020 Inorganic Chemical 2 of 12 results Mar 2, 2005 Mar 2, 2015
Bromoform 2942 Organic Chemical 1 of 6 results Aug 27, 2014 Aug 27, 2014
Dibromochloromethane 2944 Organic Chemical 1 of 6 results Aug 27, 2014 Aug 27, 2014
Nitrite 1041 Inorganic Chemical 1 of 36 results Nov 16, 2005 Nov 16, 2005
Cadmium 1015 Inorganic Chemical 1 of 12 results Mar 2, 2005 Mar 2, 2005
Fluoride 1025 Inorganic Chemical 1 of 12 results Mar 2, 2005 Mar 2, 2005
Selenium 1045 Inorganic Chemical 1 of 12 results Mar 2, 2005 Mar 2, 2005
Sulfate 1055 Inorganic Chemical 1 of 2 results Nov 20, 2003 Nov 20, 2003

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

Choose a date range

The most recent samples, result by result

The table below lists 1–10 of 18 samples, newest first — collected October 16, 2024 to June 30, 2026. The summary above covers all 18.

37 results from the 10 samples listed here: 12 detected, 25 not detected. Across the whole record it is 188 of 739. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Units in this table

Antimony, Total is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Arsenic is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Barium is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Beryllium, Total is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Cadmium is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Chromium is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Mercury is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Selenium is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Thallium, Total is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

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 Copiah W/A - Gallman, every result from 1 to 10 of 18 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
Jun 30, 2026
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
35047543001
Laboratory
Pace Analytical Services, LLC
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 30, 2026, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
16.3 ug/l , sample collected Jun 30, 2026, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Jun 30, 2026, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jun 30, 2026, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 30, 2026, sampling point TF080 Fluoride 1025 EPA method 300.0 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Jun 30, 2026, sampling point TF080 Mercury 1035 EPA method 245.1 Jan 1, 2026 – Dec 31, 2031
0.85 mg/l , sample collected Jun 30, 2026, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2026 – Dec 31, 2026
0.85 mg/l , sample collected Jun 30, 2026, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 30, 2026, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 30, 2026, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 30, 2026, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.1 ug/l Minimum Reporting Level , sample collected Jun 30, 2026, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 30, 2026, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Collected
Oct 27, 2025 08:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
CN-251027-163
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 27, 2025 08:30, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Mar 10, 2025 13:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-250311-016
Laboratory
MSDH Lab
1.05 ug/l , sample collected Mar 10, 2025 13:00, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Dec 31, 2025
Collected
Mar 10, 2025 13:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
TH-250311-016
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:00, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Collected
Feb 5, 2025 08:50
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
IN-250206-031
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 5, 2025 08:50, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0134 mg/l , sample collected Feb 5, 2025 08:50, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 5, 2025 08:50, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 5, 2025 08:50, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 5, 2025 08:50, sampling point TF080 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 5, 2025 08:50, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0006 mg/l , sample collected Feb 5, 2025 08:50, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 5, 2025 08:50, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 5, 2025 08:50, sampling point TF080 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 Feb 5, 2025 08:50, sampling point TF080 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 Feb 5, 2025 08:50, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 27, 2025 11:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-250128-031
Laboratory
MSDH Lab
0.981 mg/l , sample collected Jan 27, 2025 11:00, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
0.981 mg/l , sample collected Jan 27, 2025 11:00, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 27, 2025 11:00, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Oct 16, 2024 09:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NA-241017-027
Laboratory
MSDH Lab
7.65 mg/l , sample collected Oct 16, 2024 09:00, sampling point TF080 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Oct 16, 2024 05:15
Sampling point
LC0004 Location withheld
Sample type
Routine
Lab sample
PB-241017-010
Laboratory
MSDH Lab
0.0192 mg/l , sample collected Oct 16, 2024 05:15, sampling point LC0004 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 16, 2024 05:15, sampling point LC0004 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Oct 16, 2024 06:30
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-241017-009
Laboratory
MSDH Lab
0.02 mg/l , sample collected Oct 16, 2024 06:30, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 16, 2024 06:30, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Oct 16, 2024 07:15
Sampling point
LC0006 Location withheld
Sample type
Routine
Lab sample
PB-241017-008
Laboratory
MSDH Lab
0.0195 mg/l , sample collected Oct 16, 2024 07:15, sampling point LC0006 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 16, 2024 07:15, sampling point LC0006 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024

Routine (10).