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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

MS0060008 , Town of Duncan

27 of the 58 analytes this system has been tested for have been detected at least once, across 278 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 278 samples on record, detections range from July 20, 1993 to September 18, 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 Town of Duncan, 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 65 of 84 results Jul 20, 1993 Sep 18, 2025
Lead 1030 Inorganic Chemical 55 of 84 results Jul 20, 1993 Sep 18, 2025
TTHM 2950 Organic Chemical 43 of 45 results Sep 27, 2004 Mar 18, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 36 of 40 results Jun 21, 2007 Mar 18, 2025
Chloroform 2941 Organic Chemical 24 of 24 results Jun 21, 2007 Oct 15, 2020
Bromodichloromethane 2943 Organic Chemical 24 of 24 results Jun 21, 2007 Oct 15, 2020
Dibromochloromethane 2944 Organic Chemical 24 of 24 results Jun 21, 2007 Oct 15, 2020
Dichloroacetic Acid 2451 Organic Chemical 22 of 22 results Aug 18, 2008 Oct 15, 2020
Trichloroacetic Acid 2452 Organic Chemical 22 of 22 results Aug 18, 2008 Oct 15, 2020
Dibromoacetic Acid 2454 Organic Chemical 22 of 22 results Aug 18, 2008 Oct 15, 2020
Bromoform 2942 Organic Chemical 21 of 24 results Aug 18, 2008 Oct 15, 2020
Barium 1010 Inorganic Chemical 20 of 20 results Jan 29, 2002 Jan 15, 2025
Chromium 1020 Inorganic Chemical 16 of 20 results Jan 29, 2002 Jan 15, 2025
Fluoride 1025 Inorganic Chemical 15 of 15 results Jan 29, 2002 Jan 15, 2025
Selenium 1045 Inorganic Chemical 10 of 20 results Jan 28, 2004 Mar 27, 2024
Nickel 1036 Inorganic Chemical 9 of 20 results Mar 21, 2005 May 2, 2017
Arsenic 1005 Inorganic Chemical 8 of 20 results Mar 21, 2005 Jan 15, 2025
Monochloroacetic Acid 2450 Organic Chemical 5 of 22 results Aug 18, 2008 Jan 13, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 7, 2011 Jul 11, 2012
Monobromoacetic Acid 2453 Organic Chemical 4 of 22 results Jun 26, 2018 Oct 15, 2020
Xylenes, Total 2955 Organic Chemical 4 of 23 results Sep 18, 2012 Jul 11, 2013
Gross Alpha Particle Activity 4109 Radionuclide 4 of 4 results Jun 21, 2012 Jan 23, 2013
Nitrite 1041 Inorganic Chemical 2 of 35 results Jan 10, 2022 Jan 10, 2022
Sodium 1052 Inorganic Chemical 2 of 2 results Oct 28, 2019 Oct 28, 2019
Thallium, Total 1085 Inorganic Chemical 1 of 20 results Aug 19, 2008 Aug 19, 2008
Antimony, Total 1074 Inorganic Chemical 1 of 20 results Mar 21, 2005 Mar 21, 2005
Beryllium, Total 1075 Inorganic Chemical 1 of 20 results Mar 21, 2005 Mar 21, 2005

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 261–270 of 278 samples, newest first — collected July 21, 1993 to January 18, 1994. The summary above covers all 278.

20 results from the 10 samples listed here: 15 detected, 5 not detected. Across the whole record it is 465 of 1,323. 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 Town of Duncan, every result from 261 to 270 of 278 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 18, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940119-173L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Jan 18, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Jan 18, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Jan 18, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940119-172L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Jan 18, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Jan 18, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Jan 18, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940119-171L
Laboratory
MSDH Lab
0.072 mg/l , sample collected Jan 18, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.003 mg/l , sample collected Jan 18, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Jan 18, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940119-170L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Jan 18, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Jan 18, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Jan 18, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940119-169L
Laboratory
MSDH Lab
0.097 mg/l , sample collected Jan 18, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Jan 18, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Jan 17, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940119-177L
Laboratory
MSDH Lab
0.995 mg/l , sample collected Jan 17, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.005 mg/l , sample collected Jan 17, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Jan 17, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940119-176L
Laboratory
MSDH Lab
0.178 mg/l , sample collected Jan 17, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Jan 17, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Jan 17, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940119-168L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Jan 17, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.004 mg/l , sample collected Jan 17, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 21, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930722-140L
Laboratory
MSDH Lab
0.126 mg/l , sample collected Jul 21, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.011 mg/l , sample collected Jul 21, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 21, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930722-137L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Jul 21, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.003 mg/l , sample collected Jul 21, 1993, sampling point DS000 Lead 1030 Not recorded

Routine (10).