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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 201–210 of 466 samples, newest first — collected August 19, 2015 to April 26, 2016. The summary above covers all 466.

42 results from the 10 samples listed here: 11 detected, 31 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.

Chemical and radiological sample results for Copiah W/A - Bayou Pierre #1, every result from 201 to 210 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
Apr 26, 2016 11:43
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
160427-110NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 11:43, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 11:43, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 11:43, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Apr 26, 2016 11:26
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
160427-095NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 11:26, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 11:26, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 11:26, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Apr 26, 2016 11:07
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
160427-085NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 11:07, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 11:07, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 11:07, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Aug 20, 2015 12:05
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
150821-002VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Dichloromethane 2964 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Benzene 2990 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Toluene 2991 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2015 12:05, sampling point TF103 Styrene 2996 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Collected
Aug 19, 2015 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
150820-018PB
Laboratory
MSDH Lab
0.0025 mg/l , sample collected Aug 19, 2015 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Not recorded
0.0012 mg/l , sample collected Aug 19, 2015 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Not recorded
Collected
Aug 19, 2015 06:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
150820-017PB
Laboratory
MSDH Lab
0.0758 mg/l , sample collected Aug 19, 2015 06:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Not recorded
0.0021 mg/l , sample collected Aug 19, 2015 06:45, sampling point DS000 Lead 1030 EPA method 200.8 Not recorded
Collected
Aug 19, 2015 10:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
150820-015PB
Laboratory
MSDH Lab
0.0431 mg/l , sample collected Aug 19, 2015 10:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Not recorded
0.0012 mg/l , sample collected Aug 19, 2015 10:30, sampling point DS000 Lead 1030 EPA method 200.8 Not recorded
Collected
Aug 19, 2015 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
150820-014PB
Laboratory
MSDH Lab
0.0073 mg/l , sample collected Aug 19, 2015 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 19, 2015 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Not recorded
Collected
Aug 19, 2015 05:40
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
150820-013PB
Laboratory
MSDH Lab
0.0146 mg/l , sample collected Aug 19, 2015 05:40, sampling point DS000 Copper, Free 1022 EPA method 200.8 Not recorded
0.0009 mg/l , sample collected Aug 19, 2015 05:40, sampling point DS000 Lead 1030 EPA method 200.8 Not recorded
Collected
Aug 19, 2015 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
150820-012PB
Laboratory
MSDH Lab
0.0259 mg/l , sample collected Aug 19, 2015 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Not recorded
0.0011 mg/l , sample collected Aug 19, 2015 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Not recorded

Routine (10).