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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.

Chemical and radiological sample results

MS0090008 , Southeast Chickasaw W/A #1

20 of the 57 analytes this system has been tested for have been detected at least once, across 410 samples on record.

The other 37 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 410 samples on record, detections range from December 30, 1993 to December 8, 2025. These figures cover the whole record.

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.

Every analyte ever detected for Southeast Chickasaw W/A #1, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 118 of 157 results Dec 30, 1993 Jun 10, 2025
Lead 1030 Inorganic Chemical 114 of 157 results Dec 30, 1993 Jun 10, 2025
Barium 1010 Inorganic Chemical 33 of 33 results Sep 8, 2003 Jan 13, 2025
Fluoride 1025 Inorganic Chemical 33 of 33 results Sep 8, 2003 Jan 13, 2025
TTHM 2950 Organic Chemical 22 of 32 results May 10, 2004 Dec 8, 2025
Chromium 1020 Inorganic Chemical 21 of 33 results Jan 12, 2004 Jan 13, 2025
Arsenic 1005 Inorganic Chemical 17 of 33 results Feb 14, 2005 Jan 13, 2025
Selenium 1045 Inorganic Chemical 15 of 33 results Sep 8, 2003 Mar 24, 2008
Nickel 1036 Inorganic Chemical 12 of 33 results Jan 12, 2004 Jan 13, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 9 of 32 results Jul 9, 2007 Jan 23, 2023
Sodium 1052 Inorganic Chemical 8 of 8 results Sep 18, 2019 Oct 14, 2024
Bromoform 2942 Organic Chemical 7 of 8 results Jul 11, 2011 Dec 8, 2025
Dibromochloromethane 2944 Organic Chemical 5 of 8 results Jul 16, 2018 Dec 8, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 15 results Mar 6, 2012 Oct 2, 2012
Nitrite 1041 Inorganic Chemical 3 of 66 results Jan 10, 2022 Jan 10, 2022
Monochloroacetic Acid 2450 Organic Chemical 3 of 7 results Aug 11, 2014 Jul 8, 2019
Cadmium 1015 Inorganic Chemical 3 of 33 results Feb 14, 2005 Feb 14, 2005
Chloroform 2941 Organic Chemical 1 of 8 results Aug 11, 2014 Aug 11, 2014
Cyanide 1024 Inorganic Chemical 1 of 33 results Jun 27, 2011 Jun 27, 2011
Monobromoacetic Acid 2453 Organic Chemical 1 of 7 results Aug 11, 2008 Aug 11, 2008

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 91–100 of 410 samples, newest first — collected February 1, 2021 to August 23, 2021. The summary above covers all 410.

10 results from the 10 samples listed here: 4 detected, 6 not detected. Across the whole record it is 431 of 1,571. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for Southeast Chickasaw W/A #1, every result from 91 to 100 of 410 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Aug 23, 2021 14:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-210824-004
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 23, 2021 14:30, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2021
Collected
Aug 23, 2021 14:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-210824-004
Laboratory
MSDH Lab
4 ug/l , sample collected Aug 23, 2021 14:30, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Apr 19, 2021 12:40
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
RU-210420-009
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 19, 2021 12:40, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
Apr 19, 2021 13:26
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
RU-210420-008
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 19, 2021 13:26, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
Apr 13, 2021 14:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-210414-017
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 13, 2021 14:40, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Apr 13, 2021 14:25
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
CN-210414-016
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 13, 2021 14:25, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Apr 13, 2021 15:01
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
CN-210414-015
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 13, 2021 15:01, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Feb 1, 2021 14:22
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NA-210202-037
Laboratory
MSDH Lab
92.2 mg/l , sample collected Feb 1, 2021 14:22, sampling point TF103 Sodium 1052 EPA method 200.7 Not recorded
Collected
Feb 1, 2021 13:27
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NA-210202-036
Laboratory
MSDH Lab
96.5 mg/l , sample collected Feb 1, 2021 13:27, sampling point TF102 Sodium 1052 EPA method 200.7 Not recorded
Collected
Feb 1, 2021 13:55
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NA-210202-035
Laboratory
MSDH Lab
97.5 mg/l , sample collected Feb 1, 2021 13:55, sampling point TF101 Sodium 1052 EPA method 200.7 Not recorded

Routine (10).