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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

MS0140002 , Clarksdale Public Utilities

30 of the 59 analytes this system has been tested for have been detected at least once, across 1,252 samples on record.

The other 29 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 1,252 samples on record, detections range from July 6, 1992 to July 9, 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 Clarksdale Public Utilities, 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 440 of 479 results Jul 6, 1992 Sep 11, 2024
Lead 1030 Inorganic Chemical 367 of 479 results Jul 6, 1992 Sep 11, 2024
TTHM 2950 Organic Chemical 144 of 144 results Mar 18, 2004 Jul 9, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 134 of 141 results Sep 6, 2005 Jul 9, 2025
Barium 1010 Inorganic Chemical 98 of 99 results Apr 9, 2002 Feb 10, 2025
Fluoride 1025 Inorganic Chemical 96 of 99 results Apr 9, 2002 Feb 10, 2025
Chromium 1020 Inorganic Chemical 77 of 99 results Apr 9, 2002 Feb 10, 2025
Chloroform 2941 Organic Chemical 72 of 72 results Jul 25, 2006 Dec 15, 2020
Bromodichloromethane 2943 Organic Chemical 66 of 72 results Jul 25, 2006 Dec 15, 2020
Selenium 1045 Inorganic Chemical 62 of 99 results Apr 9, 2002 Feb 10, 2025
Dibromochloromethane 2944 Organic Chemical 62 of 72 results Jul 25, 2006 Dec 15, 2020
Trichloroacetic Acid 2452 Organic Chemical 60 of 67 results Aug 10, 2010 Dec 15, 2020
Dibromoacetic Acid 2454 Organic Chemical 60 of 67 results Jun 23, 2008 Dec 15, 2020
Dichloroacetic Acid 2451 Organic Chemical 56 of 67 results Jun 23, 2008 Jul 27, 2020
Bromoform 2942 Organic Chemical 54 of 72 results Nov 14, 2006 Dec 15, 2020
Arsenic 1005 Inorganic Chemical 49 of 99 results Apr 9, 2002 Feb 10, 2025
Nickel 1036 Inorganic Chemical 42 of 99 results Apr 9, 2002 Feb 10, 2025
Sodium 1052 Inorganic Chemical 15 of 15 results Oct 2, 2019 Feb 1, 2021
Cyanide 1024 Inorganic Chemical 12 of 84 results Sep 8, 2003 Jun 4, 2025
Radium-226 4020 Radionuclide 10 of 28 results Mar 26, 2018 May 29, 2019
Sulfate 1055 Inorganic Chemical 9 of 26 results Sep 8, 2003 Sep 8, 2003
Thallium, Total 1085 Inorganic Chemical 8 of 99 results Mar 9, 2005 Apr 7, 2020
Nitrite 1041 Inorganic Chemical 7 of 175 results May 19, 2008 Jan 10, 2022
Monobromoacetic Acid 2453 Organic Chemical 6 of 67 results Jun 4, 2014 Dec 17, 2019
Combined Radium (-226 & -228) 4010 Radionuclide 6 of 28 results Mar 26, 2018 May 29, 2019
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 10 results May 29, 2019 May 29, 2019
Radium-228 4030 Radionuclide 4 of 28 results May 29, 2019 May 29, 2019
Cadmium 1015 Inorganic Chemical 4 of 99 results Mar 9, 2005 Jan 23, 2006
Monochloroacetic Acid 2450 Organic Chemical 3 of 67 results Nov 29, 2016 Dec 17, 2019
Nitrate 1040 Inorganic Chemical 1 of 175 results Jun 12, 2006 Jun 12, 2006

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 391–400 of 1,252 samples, newest first — collected November 29, 2016 to January 24, 2017. The summary above covers all 1,252.

36 results from the 10 samples listed here: 4 detected, 32 not detected. Across the whole record it is 2,029 of 5,159. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

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.

Chemical and radiological sample results for Clarksdale Public Utilities, every result from 391 to 400 of 1,252 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
Jan 24, 2017 12:20
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
170125-035NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 12:20, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 12:20, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 12:20, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Jan 24, 2017 14:40
Sampling point
TF111 Treatment Plant T111
Sample type
Routine
Lab sample
170125-034NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 14:40, sampling point TF111 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 14:40, sampling point TF111 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 14:40, sampling point TF111 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Jan 24, 2017 12:35
Sampling point
TF109 Treatment Plant T109
Sample type
Routine
Lab sample
170125-032NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 12:35, sampling point TF109 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 12:35, sampling point TF109 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 12:35, sampling point TF109 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Jan 24, 2017 13:50
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
170125-031NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 13:50, sampling point TF105 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 13:50, sampling point TF105 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 13:50, sampling point TF105 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Jan 24, 2017 12:55
Sampling point
TF112 Treatment Plant T112
Sample type
Routine
Lab sample
170125-029NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 12:55, sampling point TF112 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 12:55, sampling point TF112 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 12:55, sampling point TF112 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Jan 24, 2017 13:10
Sampling point
TF107 Treatment Plant T107
Sample type
Routine
Lab sample
170125-028NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 13:10, sampling point TF107 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 13:10, sampling point TF107 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 13:10, sampling point TF107 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Jan 24, 2017 14:10
Sampling point
TF106 Treatment Plant T106
Sample type
Routine
Lab sample
170125-027NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 14:10, sampling point TF106 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 14:10, sampling point TF106 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 14:10, sampling point TF106 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Jan 24, 2017 13:35
Sampling point
TF108 Treatment Plant T108
Sample type
Routine
Lab sample
170125-018NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 13:35, sampling point TF108 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 13:35, sampling point TF108 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 24, 2017 13:35, sampling point TF108 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Nov 29, 2016 01:05
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
161130-010HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Nov 29, 2016 01:05, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Nov 29, 2016 01:05, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 29, 2016 01:05, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 29, 2016 01:05, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 29, 2016 01:05, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Nov 29, 2016 01:05, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 Oct 1, 2016 – Dec 31, 2016
Collected
Nov 29, 2016 12:40
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
161130-009HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Nov 29, 2016 12:40, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Nov 29, 2016 12:40, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 29, 2016 12:40, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 29, 2016 12:40, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 29, 2016 12:40, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Nov 29, 2016 12:40, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 Oct 1, 2016 – Dec 31, 2016

Routine (10).