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
MS0530017 , Rock Hill Water Association
15 samples have been analysed for Cyanide at Rock Hill Water Association.
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 15 samples, newest first — collected May 11, 2011 to September 22, 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.
| Result | Analyte | Monitoring period |
|---|---|---|
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 22, 2025 03:20, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2023 – Dec 31, 2025 |
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 14, 2024 13:10, sampling point TF102 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2022 – Dec 31, 2024 |
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Dec 12, 2022 15:30, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2020 – Dec 31, 2022 |
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 23, 2021 13:00, sampling point TF102 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2019 – Dec 31, 2021 |
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 6, 2019 13:35, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2017 – Dec 31, 2019 |
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 22, 2017 01:35, sampling point TF102 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2016 – Dec 31, 2018 |
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 15, 2015 03:40, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2014 – Dec 31, 2016 |
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Mar 17, 2014 01:00, sampling point TF102 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2013 – Dec 31, 2015 |
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 19, 2013 01:55, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2011 – Dec 31, 2013 |
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| Not detected below 15 ug/l Minimum Reporting Level , sample collected May 11, 2011, sampling point TF102 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2010 – Dec 31, 2012 |
-
- Collected
- Sep 22, 2025 03:20
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- CN-250923-015
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Oct 14, 2024 13:10
- Sampling point
- TF102
- Sample type
- Routine
- Lab sample
- CN-241015-008
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Dec 12, 2022 15:30
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- CN-221213-009
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2020 – Dec 31, 2022
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Feb 23, 2021 13:00
- Sampling point
- TF102
- Sample type
- Routine
- Lab sample
- CN-210224-002
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2019 – Dec 31, 2021
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- May 6, 2019 13:35
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 190507-017CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- May 22, 2017 01:35
- Sampling point
- TF102
- Sample type
- Routine
- Lab sample
- 170523-015CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Jun 15, 2015 03:40
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 150616-024CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2014 – Dec 31, 2016
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Mar 17, 2014 01:00
- Sampling point
- TF102
- Sample type
- Routine
- Lab sample
- 140318-013CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Aug 19, 2013 01:55
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 130820-050CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- May 11, 2011
- Sampling point
- TF102
- Sample type
- Routine
- Lab sample
- 110512-013CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2010 – Dec 31, 2012
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 15 ug/l Minimum Reporting Level
Routine (10).