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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.

Cyanide results

MS0150001 , Copiah W/A - Bayou Pierre #1

29 samples have been analysed for Cyanide at Copiah W/A - Bayou Pierre #1.

This is one analyte out of the system’s whole record. For what has ever been detected here, and when, see all chemical and radiological results; for everything the system is tested for, see the analyte list.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

No date range is applied: this list draws on every sample on record. Show the last two years only.

Every Cyanide result

The table below lists 1–10 of 29 samples, newest first — collected July 30, 2014 to October 27, 2025.

10 Cyanide results from the 10 samples listed here: 0 detected, 10 not detected.

Cyanide results for Copiah W/A - Bayou Pierre #1, from 1 to 10 of 29 samples shown analysed for it, newest first. This view leaves out other analytes on the same samples. 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 27, 2025 12:15
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
CN-251027-166
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 27, 2025 12:15, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Oct 27, 2025 12:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-251027-165
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 27, 2025 12:00, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Feb 23, 2022 10:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-220224-006
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 23, 2022 10:30, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Feb 23, 2022 10:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
CN-220224-007
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 23, 2022 10:30, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Feb 23, 2022 10:40
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
CN-220224-005
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 23, 2022 10:40, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
May 14, 2018 10:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180515-029CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 14, 2018 10:00, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
May 14, 2018 10:06
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
180515-028CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 14, 2018 10:06, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
May 14, 2018 09:45
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
180515-021CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 14, 2018 09:45, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
Feb 25, 2015 01:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
150226-002CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 25, 2015 01:30, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Jul 30, 2014 12:40
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
140731-037CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jul 30, 2014 12:40, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016

Routine (10).