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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

MS0450019 , PRVWSD-Main Harbor

20 samples have been analysed for Cyanide at PRVWSD-Main Harbor.

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 20 samples, newest first — collected September 19, 2012 to September 16, 2025.

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

Units in this table

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

Cyanide results for PRVWSD-Main Harbor, from 1 to 10 of 20 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
Sep 16, 2025 07:55
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
CN-250916-036
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 16, 2025 07:55, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Sep 16, 2025 08:10
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
CN-250916-035
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 16, 2025 08:10, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
May 16, 2022 07:46
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
CN-220516-002
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 16, 2022 07:46, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
May 16, 2022 07:28
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
CN-220516-001
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 16, 2022 07:28, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Apr 10, 2019 10:15
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
190411-004CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 10, 2019 10:15, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
Apr 10, 2019 10:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
190411-003CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 10, 2019 10:00, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
Jun 3, 2015 09:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
150604-025CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 3, 2015 09:00, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Jun 3, 2015 09:15
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
150604-018CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 3, 2015 09:15, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Sep 19, 2012 11:27
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
120920-012CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Sep 19, 2012 11:27, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013
Collected
Sep 19, 2012 11:00
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
120920-011CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Sep 19, 2012 11:00, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013

Routine (10).