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.
Samples for one analyte
Samples taken for Cyanide across the water systems Mississippi State Department of Health serves — where it was looked for, and at which sampling point.
501–520 of 2,098 samples. From samples collected September 27, 2024 to September 27, 2026. These dates are applied here by default; they are not a limit on what the agency records. Show 5 years, back to September 27, 2021.
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Choose water systems
This is where it was looked for
Each row is a sample taken for Cyanide. These rows carry no result and no measured amount — a row means the analyte was sampled for at that point, not that it was found there.
Which analytes a system has detected, and when, is on that system’s own sample results page, reachable from its record.
| County | Water system | Collected | Sampling point | Sample type |
|---|---|---|---|---|
| Harrison | City of Pass Christian, MS0240009 | November 4, 2025 | TF104 , Treatment Plant T104 | Routine |
| Harrison | City of Pass Christian, MS0240009 | August 18, 2025 | TF102 , Treatment Plant T102 | Routine |
| Harrison | City of Pass Christian, MS0240009 | August 18, 2025 | TF103 , Treatment Plant T103 | Routine |
| Harrison | City of Pass Christian, MS0240009 | October 21, 2024 | TF103 , Treatment Plant T103 | Routine |
| Harrison | City of Pass Christian, MS0240009 | October 21, 2024 | TF105 , Treatment Facility TF105 | Routine |
| Harrison | Saucier Utilities, MS0240011 | December 29, 2025 | TF101 , Treatment Plant T101 | Routine |
| Harrison | Saucier Utilities, MS0240011 | December 29, 2025 | TF102 , Treatment Plant T102 | Routine |
| Harrison | Knollwood, MS0240027 | August 25, 2025 | TF101 , Treatment Plant T101 | Routine |
| Harrison | City of Biloxi-French, MS0240036 | August 25, 2025 | TF103 , Treatment Plant T103 | Routine |
| Harrison | City of Biloxi-French, MS0240036 | August 25, 2025 | TF105 | Routine |
| Harrison | City of Biloxi-French, MS0240036 | August 25, 2025 | TF106 , Treatment Plant T106 | Routine |
| Harrison | Bernard Bayou Industrial District, MS0240046 | August 25, 2025 | TF101 , Treatment Plant T101 | Routine |
| Harrison | Bernard Bayou Industrial District, MS0240046 | August 25, 2025 | TF102 , Treatment Plant T102 | Routine |
| Harrison | Bernard Bayou Industrial District, MS0240046 | August 25, 2025 | TF103 , Treatment Plant T103 | Routine |
| Harrison | Keesler Air Force Base, MS0240049 | July 7, 2026 | TF115 | Routine |
| Harrison | Keesler Air Force Base, MS0240049 | August 13, 2025 | TF108 , Treatment Plant T108 | Routine |
| Harrison | Keesler Air Force Base, MS0240049 | August 13, 2025 | TF111 , Treatment Plant T111 | Routine |
| Harrison | Keesler Air Force Base, MS0240049 | August 13, 2025 | TF112 , Treatment Plant T112 | Routine |
| Harrison | Keesler Air Force Base, MS0240049 | August 13, 2025 | TF113 , Treatment Plant T113 | Routine |
| Harrison | Keesler Air Force Base, MS0240049 | April 30, 2025 | TF116 , Treatment Facility TF116 | Routine |