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.
Chemical and radiological sample results
MS0760079 , Jamie Whitten Delta States Research Cent
11 of the 42 analytes this system has been tested for have been detected at least once, across 145 samples on record.
The other 31 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.
Across all 145 samples on record, detections range from April 25, 2017 to October 14, 2025. These figures cover the whole record; the list of samples further down is narrowed.
What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.
What has been detected, ever
Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.
| Analyte | Kind | Detected in | First detected | Last detected |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 45 of 45 results | Apr 25, 2017 | Aug 25, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 36 of 36 results | Sep 8, 2021 | Oct 14, 2025 |
| TTHM 2950 | Organic Chemical | 36 of 36 results | Sep 9, 2021 | Oct 14, 2025 |
| Lead 1030 | Inorganic Chemical | 19 of 45 results | Apr 25, 2017 | Aug 25, 2025 |
| Barium 1010 | Inorganic Chemical | 4 of 4 results | Sep 18, 2018 | Feb 5, 2024 |
| Fluoride 1025 | Inorganic Chemical | 4 of 4 results | Sep 18, 2018 | Feb 5, 2024 |
| Chromium 1020 | Inorganic Chemical | 3 of 4 results | Sep 18, 2018 | Feb 5, 2024 |
| Arsenic 1005 | Inorganic Chemical | 1 of 4 results | Feb 5, 2024 | Feb 5, 2024 |
| Sodium 1052 | Inorganic Chemical | 1 of 1 result | Apr 3, 2023 | Apr 3, 2023 |
| Xylenes, Total 2955 | Organic Chemical | 1 of 10 results | Nov 18, 2020 | Nov 18, 2020 |
| Dichloromethane 2964 | Organic Chemical | 1 of 10 results | Nov 18, 2020 | Nov 18, 2020 |
Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.
Choose a date range
The most recent samples, result by result
The table below lists 21–28 of 28 samples, newest first — collected October 7, 2024 to January 27, 2025. The summary above covers all 28.
8 results from the 8 samples listed here: 7 detected, 1 not detected. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
| Result | Analyte | Monitoring period |
|---|---|---|
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| 36.5 ug/l , sample collected Jan 27, 2025 13:15, sampling point SM1 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2025 – Mar 31, 2025 |
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| 71.9 ug/l , sample collected Jan 27, 2025 13:00, sampling point SM2 | TTHM 2950 EPA method 524.2 | Jan 1, 2025 – Mar 31, 2025 |
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| 48.9 ug/l , sample collected Jan 27, 2025 13:10, sampling point SM1 | TTHM 2950 EPA method 524.2 | Jan 1, 2025 – Mar 31, 2025 |
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| 87.5 ug/l , sample collected Oct 16, 2024 13:15, sampling point SM2 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2024 – Dec 31, 2024 |
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| 31.5 ug/l , sample collected Oct 16, 2024 13:00, sampling point SM1 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2024 – Dec 31, 2024 |
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| 134 ug/l , sample collected Oct 16, 2024 13:15, sampling point SM2 | TTHM 2950 EPA method 524.2 | Oct 1, 2024 – Dec 31, 2024 |
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| 38.1 ug/l , sample collected Oct 16, 2024 13:00, sampling point SM1 | TTHM 2950 EPA method 524.2 | Oct 1, 2024 – Dec 31, 2024 |
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 7, 2024 13:15, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2022 – Dec 31, 2024 |
-
- Collected
- Jan 27, 2025 13:15
- Sampling point
- SM1 Bldg#49 West End
- Sample type
- Routine
- Lab sample
- HA-250128-001
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Mar 31, 2025
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 36.5 ug/l
-
- Collected
- Jan 27, 2025 13:00
- Sampling point
- SM2 Bldg#45 West End
- Sample type
- Routine
- Lab sample
- TH-250128-051
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Mar 31, 2025
-
TTHM 2950 EPA method 524.2
- Result
- 71.9 ug/l
-
- Collected
- Jan 27, 2025 13:10
- Sampling point
- SM1 Bldg#49 West End
- Sample type
- Routine
- Lab sample
- TH-250128-050
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Mar 31, 2025
-
TTHM 2950 EPA method 524.2
- Result
- 48.9 ug/l
-
- Collected
- Oct 16, 2024 13:15
- Sampling point
- SM2 Bldg#45 West End
- Sample type
- Routine
- Lab sample
- HA-241017-018
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 87.5 ug/l
-
- Collected
- Oct 16, 2024 13:00
- Sampling point
- SM1 Bldg#49 West End
- Sample type
- Routine
- Lab sample
- HA-241017-017
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 31.5 ug/l
-
- Collected
- Oct 16, 2024 13:15
- Sampling point
- SM2 Bldg#45 West End
- Sample type
- Routine
- Lab sample
- TH-241017-018
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
TTHM 2950 EPA method 524.2
- Result
- 134 ug/l
-
- Collected
- Oct 16, 2024 13:00
- Sampling point
- SM1 Bldg#49 West End
- Sample type
- Routine
- Lab sample
- TH-241017-017
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
TTHM 2950 EPA method 524.2
- Result
- 38.1 ug/l
-
- Collected
- Oct 7, 2024 13:15
- Sampling point
- TF101 Treatment Facility TF101
- Sample type
- Routine
- Lab sample
- CN-241008-013
- 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
Routine (8).