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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.

Samples for one analyte

Samples taken for TTHM across the water systems Mississippi State Department of Health serves — where it was looked for, and at which sampling point.

1,381–1,400 of 4,378 samples. From samples collected September 30, 2024 to September 30, 2026. These dates are applied here by default; they are not a limit on what the agency records. Show 5 years, back to September 30, 2021.

Choose a date range

This page can show a range of up to 5 years at a time. That is a limit of this service, not of what the agency records.

Choose water systems

This is where it was looked for

Each row is a sample taken for TTHM. 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.

We withheld the location of 2 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Samples taken for TTHM across the systems Mississippi State Department of Health serves, 1,381 to 1,400 of 4,378 samples shown. Each row is a sample and carries no result: it says where the analyte was looked for, not what was found.
County Water system Collected Sampling point Sample type
Jackson Ingalls Shipbuilding, MS0300010 October 16, 2024 SM1 , Control Room Near Well 2 Routine
Jackson Ingalls Shipbuilding, MS0300010 October 16, 2024 SM2 , At Multi-Purpose Whse Routine
Jackson Ingalls Shipbuilding, MS0300010 October 16, 2024 SM4 , Panel Shop Routine
Jackson Ingalls Shipbuilding, MS0300010 October 16, 2024 SM6 , At Fab Shop Routine
Jackson Chevron Usa, MS0300011 December 9, 2025 SM1 , Utilities Control Routine
Jackson Chevron Usa, MS0300011 December 9, 2025 SM2 , Shipping Maintenance Routine
Jackson Chevron Usa, MS0300011 September 24, 2025 SM1 , Utilities Control Routine
Jackson Chevron Usa, MS0300011 September 24, 2025 SM2 , Shipping Maintenance Routine
Jackson Chevron Usa, MS0300011 June 25, 2025 SM1 , Utilities Control Routine
Jackson Chevron Usa, MS0300011 June 25, 2025 SM2 , Shipping Maintenance Routine
Jackson Chevron Usa, MS0300011 March 19, 2025 SM1 , Utilities Control Routine
Jackson Chevron Usa, MS0300011 March 19, 2025 SM2 , Shipping Maintenance Routine
Jackson Chevron Usa, MS0300011 December 10, 2024 SM1 , Utilities Control Routine
Jackson Chevron Usa, MS0300011 December 10, 2024 SM2 , Shipping Maintenance Routine
Jackson Jackson Co. E Port Authority, MS0300013 February 26, 2025 SM1 , 521 E Port Rd - Storage Tank Routine
Jackson Jackson Co Utility Authority-Helena Park, MS0300026 February 10, 2025 SM2 , Location withheld Routine
Jackson Gulf Park, MS0300044 February 24, 2026 SM1 , Location withheld Routine
Jackson Gulf Park, MS0300044 March 26, 2025 SM1 , Location withheld Routine
Jackson Gulf Park, MS0300044 October 9, 2024 SM1 , Location withheld Routine
Jackson Gulf Park, MS0300044 October 9, 2024 SM2 , Location withheld Routine