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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 131–140 of 278 samples, newest first — collected June 19, 2014 to June 16, 2015. The summary above covers all 278.

66 results from the 10 samples listed here: 12 detected, 54 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 131 to 140 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
Jun 16, 2015 02:00
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
150617-008VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Dichloromethane 2964 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Benzene 2990 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Toluene 2991 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 16, 2015 02:00, sampling point TF103 Styrene 2996 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Collected
Jan 20, 2015 13:16
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
150121-108NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:16, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:16, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:16, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Jan 20, 2015 13:32
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
150121-107NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:32, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:32, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:32, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Aug 4, 2014 02:04
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
140805-022HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 4, 2014 02:04, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.007 mg/l , sample collected Aug 4, 2014 02:04, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.006 mg/l , sample collected Aug 4, 2014 02:04, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 4, 2014 02:04, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
0.003 mg/l , sample collected Aug 4, 2014 02:04, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.016 mg/l , sample collected Aug 4, 2014 02:04, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2014 – Dec 31, 2016
Collected
Aug 4, 2014 02:04
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
140805-022TH
Laboratory
MSDH Lab
20.8 ug/l , sample collected Aug 4, 2014 02:04, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
4.36 ug/l , sample collected Aug 4, 2014 02:04, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
17.5 ug/l , sample collected Aug 4, 2014 02:04, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
19.1 ug/l , sample collected Aug 4, 2014 02:04, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
61.8 ug/l , sample collected Aug 4, 2014 02:04, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2014 – Dec 31, 2016
Collected
Jul 23, 2014 03:00
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
140724-005VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Xylenes, Total 2955 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Dichloromethane 2964 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 O-Dichlorobenzene 2968 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 P-Dichlorobenzene 2969 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Vinyl Chloride 2976 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 1,1-Dichloroethylene 2977 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 1,2-Dichloroethane 2980 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 1,1,1-Trichloroethane 2981 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Carbon Tetrachloride 2982 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 1,2-Dichloropropane 2983 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Trichloroethylene 2984 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 1,1,2-Trichloroethane 2985 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Tetrachloroethylene 2987 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Chlorobenzene 2989 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Benzene 2990 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Toluene 2991 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Ethylbenzene 2992 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2014 03:00, sampling point TF103 Styrene 2996 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Collected
Jun 30, 2014 03:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
140701-066CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 30, 2014 03:30, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Jun 19, 2014 05:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140620-116PB
Laboratory
MSDH Lab
0.0083 mg/l , sample collected Jun 19, 2014 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 19, 2014 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jun 19, 2014 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140620-115PB
Laboratory
MSDH Lab
0.0044 mg/l , sample collected Jun 19, 2014 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 19, 2014 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jun 19, 2014 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140620-114PB
Laboratory
MSDH Lab
0.1096 mg/l , sample collected Jun 19, 2014 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 19, 2014 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014

Routine (10).