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 11–20 of 28 samples, newest first — collected January 27, 2025 to August 19, 2025. The summary above covers all 28.
32 results from the 10 samples listed here: 8 detected, 24 not detected. Across the whole record it is 151 of 445. 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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| 24.6 ug/l , sample collected Aug 19, 2025 12:30, sampling point SM1 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jul 1, 2025 – Sep 30, 2025 |
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| 69.9 ug/l , sample collected Aug 19, 2025 12:45, sampling point SM2 | TTHM 2950 EPA method 524.2 | Jul 1, 2025 – Sep 30, 2025 |
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| 53.6 ug/l , sample collected Aug 19, 2025 12:30, sampling point SM1 | TTHM 2950 EPA method 524.2 | Jul 1, 2025 – Sep 30, 2025 |
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| 39.4 ug/l , sample collected Apr 22, 2025 13:10, sampling point SM2 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Apr 1, 2025 – Jun 30, 2025 |
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| 28.9 ug/l , sample collected Apr 22, 2025 13:00, sampling point SM1 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Apr 1, 2025 – Jun 30, 2025 |
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| 74.5 ug/l , sample collected Apr 22, 2025 13:10, sampling point SM2 | TTHM 2950 EPA method 524.2 | Apr 1, 2025 – Jun 30, 2025 |
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| 44.6 ug/l , sample collected Apr 22, 2025 13:00, sampling point SM1 | TTHM 2950 EPA method 524.2 | Apr 1, 2025 – Jun 30, 2025 |
|
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| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 15, 2025 12:40, sampling point TF101 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 15, 2025 12:40, sampling point TF101 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 15, 2025 12:40, sampling point TF101 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
|
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| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | 1,2,4-Trichlorobenzene 2378 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Cis-1,2-Dichloroethylene 2380 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Xylenes, Total 2955 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Dichloromethane 2964 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | O-Dichlorobenzene 2968 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | P-Dichlorobenzene 2969 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Vinyl Chloride 2976 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | 1,1-Dichloroethylene 2977 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Trans-1,2-Dichloroethylene 2979 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | 1,2-Dichloroethane 2980 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | 1,1,1-Trichloroethane 2981 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Carbon Tetrachloride 2982 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | 1,2-Dichloropropane 2983 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Trichloroethylene 2984 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | 1,1,2-Trichloroethane 2985 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Tetrachloroethylene 2987 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Chlorobenzene 2989 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Benzene 2990 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Toluene 2991 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Ethylbenzene 2992 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 10, 2025 13:20, sampling point TF101 | Styrene 2996 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
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| 48.2 ug/l , sample collected Jan 27, 2025 13:00, sampling point SM2 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2025 – Mar 31, 2025 |
-
- Collected
- Aug 19, 2025 12:30
- Sampling point
- SM1 Bldg#49 West End
- Sample type
- Routine
- Lab sample
- HA-250820-015
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2025 – Sep 30, 2025
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 24.6 ug/l
-
- Collected
- Aug 19, 2025 12:45
- Sampling point
- SM2 Bldg#45 West End
- Sample type
- Routine
- Lab sample
- TH-250820-016
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2025 – Sep 30, 2025
-
TTHM 2950 EPA method 524.2
- Result
- 69.9 ug/l
-
- Collected
- Aug 19, 2025 12:30
- Sampling point
- SM1 Bldg#49 West End
- Sample type
- Routine
- Lab sample
- TH-250820-015
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2025 – Sep 30, 2025
-
TTHM 2950 EPA method 524.2
- Result
- 53.6 ug/l
-
- Collected
- Apr 22, 2025 13:10
- Sampling point
- SM2 Bldg#45 West End
- Sample type
- Routine
- Lab sample
- HA-250423-018
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2025 – Jun 30, 2025
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 39.4 ug/l
-
- Collected
- Apr 22, 2025 13:00
- Sampling point
- SM1 Bldg#49 West End
- Sample type
- Routine
- Lab sample
- HA-250423-017
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2025 – Jun 30, 2025
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 28.9 ug/l
-
- Collected
- Apr 22, 2025 13:10
- Sampling point
- SM2 Bldg#45 West End
- Sample type
- Routine
- Lab sample
- TH-250423-018
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2025 – Jun 30, 2025
-
TTHM 2950 EPA method 524.2
- Result
- 74.5 ug/l
-
- Collected
- Apr 22, 2025 13:00
- Sampling point
- SM1 Bldg#49 West End
- Sample type
- Routine
- Lab sample
- TH-250423-017
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2025 – Jun 30, 2025
-
TTHM 2950 EPA method 524.2
- Result
- 44.6 ug/l
-
- Collected
- Apr 15, 2025 12:40
- Sampling point
- TF101 Treatment Facility TF101
- Sample type
- Routine
- Lab sample
- NI-250416-062
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method QC10107041C
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Mar 10, 2025 13:20
- Sampling point
- TF101 Treatment Facility TF101
- Sample type
- Routine
- Lab sample
- VO-250311-017
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
1,2,4-Trichlorobenzene 2378 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Cis-1,2-Dichloroethylene 2380 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Xylenes, Total 2955 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Dichloromethane 2964 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
O-Dichlorobenzene 2968 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
P-Dichlorobenzene 2969 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Vinyl Chloride 2976 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
1,1-Dichloroethylene 2977 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Trans-1,2-Dichloroethylene 2979 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
1,2-Dichloroethane 2980 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
1,1,1-Trichloroethane 2981 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Carbon Tetrachloride 2982 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
1,2-Dichloropropane 2983 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Trichloroethylene 2984 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
1,1,2-Trichloroethane 2985 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Tetrachloroethylene 2987 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Chlorobenzene 2989 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Benzene 2990 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Toluene 2991 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Ethylbenzene 2992 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Styrene 2996 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jan 27, 2025 13:00
- Sampling point
- SM2 Bldg#45 West End
- Sample type
- Routine
- Lab sample
- HA-250128-002
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Mar 31, 2025
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 48.2 ug/l
Routine (10).