Skip to main content
Alpha

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

MS0070007 , Duncan Hill Water Supply

39 of the 73 analytes this system has been tested for have been detected at least once, across 259 samples on record.

The other 34 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 259 samples on record, detections range from September 8, 1993 to July 25, 2026. 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 Duncan Hill Water Supply, 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 68 of 80 results Sep 8, 1993 Jul 25, 2026
Lead 1030 Inorganic Chemical 37 of 80 results Sep 8, 1993 Jul 25, 2026
Fluoride 1025 Inorganic Chemical 27 of 27 results Jul 2, 2002 Jan 14, 2025
Barium 1010 Inorganic Chemical 26 of 26 results Jul 2, 2002 Jan 14, 2025
Arsenic 1005 Inorganic Chemical 25 of 26 results Jul 2, 2002 Jan 14, 2025
Nickel 1036 Inorganic Chemical 21 of 26 results Jul 2, 2002 Jan 14, 2025
Selenium 1045 Inorganic Chemical 16 of 26 results Jul 2, 2002 Feb 20, 2024
Xylenes, Total 2955 Organic Chemical 15 of 32 results Jan 25, 2018 Jan 17, 2023
Chromium 1020 Inorganic Chemical 12 of 26 results Jan 21, 2004 Jan 14, 2025
TTHM 2950 Organic Chemical 7 of 8 results May 5, 2004 Sep 12, 2022
Combined Radium (-226 & -228) 4010 Radionuclide 7 of 16 results Dec 6, 2011 Jan 28, 2013
Radium-226 4020 Radionuclide 7 of 16 results Dec 6, 2011 Jan 28, 2013
Sodium 1052 Inorganic Chemical 6 of 6 results Mar 14, 2017 Oct 22, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 6 of 8 results Jun 25, 2007 Sep 12, 2022
Nitrate-Nitrite 1038 Inorganic Chemical 5 of 48 results May 5, 2004 Mar 4, 2013
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 12 results Dec 6, 2011 Jul 11, 2012
Radium-228 4030 Radionuclide 5 of 16 results Dec 6, 2011 Jul 11, 2012
Nitrite 1041 Inorganic Chemical 4 of 48 results Apr 9, 2007 Jan 10, 2024
Dibromoacetic Acid 2454 Organic Chemical 4 of 4 results Aug 11, 2008 Sep 6, 2017
Bromoform 2942 Organic Chemical 4 of 4 results Jun 25, 2007 Sep 6, 2017
Nitrate 1040 Inorganic Chemical 4 of 48 results May 5, 2004 Mar 4, 2013
Gross Alpha Particle Activity 4109 Radionuclide 2 of 4 results Dec 12, 2012 Jan 28, 2013
Monochloroacetic Acid 2450 Organic Chemical 1 of 4 results Sep 6, 2017 Sep 6, 2017
Calcium 1016 Inorganic Chemical 1 of 1 result Mar 14, 2017 Mar 14, 2017
Chloride 1017 Inorganic Chemical 1 of 1 result Mar 14, 2017 Mar 14, 2017
Iron 1028 Inorganic Chemical 1 of 1 result Mar 14, 2017 Mar 14, 2017
Magnesium 1031 Inorganic Chemical 1 of 1 result Mar 14, 2017 Mar 14, 2017
Manganese 1032 Inorganic Chemical 1 of 1 result Mar 14, 2017 Mar 14, 2017
Potassium 1042 Inorganic Chemical 1 of 1 result Mar 14, 2017 Mar 14, 2017
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Mar 14, 2017 Mar 14, 2017
Carbon Dioxide 1901 Water Quality 1 of 1 result Mar 14, 2017 Mar 14, 2017
Color 1905 Water Quality 1 of 1 result Mar 14, 2017 Mar 14, 2017
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Mar 14, 2017 Mar 14, 2017
Alkalinity, Total 1927 Water Quality 1 of 1 result Mar 14, 2017 Mar 14, 2017
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Mar 14, 2017 Mar 14, 2017
Calculated Sodium NACA Water Quality 1 of 1 result Mar 14, 2017 Mar 14, 2017
PH, Field Result PHFD Water Quality 1 of 1 result Mar 14, 2017 Mar 14, 2017
Dichloroacetic Acid 2451 Organic Chemical 1 of 4 results Aug 11, 2014 Aug 11, 2014
Dibromochloromethane 2944 Organic Chemical 1 of 4 results Jul 11, 2011 Jul 11, 2011

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 111–120 of 259 samples, newest first — collected June 10, 2014 to August 30, 2016. The summary above covers all 259.

29 results from the 10 samples listed here: 13 detected, 16 not detected. Across the whole record it is 330 of 1,445. 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 Duncan Hill Water Supply, every result from 111 to 120 of 259 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 30, 2016 07:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160831-043PB
Laboratory
MSDH Lab
0.1218 mg/l , sample collected Aug 30, 2016 07:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0007 mg/l , sample collected Aug 30, 2016 07:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 30, 2016 04:03
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160831-042PB
Laboratory
MSDH Lab
0.1338 mg/l , sample collected Aug 30, 2016 04:03, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 30, 2016 04:03, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 30, 2016 05:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160831-041PB
Laboratory
MSDH Lab
0.0998 mg/l , sample collected Aug 30, 2016 05:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 30, 2016 05:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Mar 16, 2016 12:58
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
160317-031NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 16, 2016 12:58, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 16, 2016 12:58, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 16, 2016 12:58, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Jan 20, 2015 13:15
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
150121-089NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:15, 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 13:15, 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 13:15, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Aug 11, 2014 01:14
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
140812-020HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 11, 2014 01:14, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.003 mg/l , sample collected Aug 11, 2014 01:14, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 11, 2014 01:14, 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 11, 2014 01:14, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Aug 11, 2014 01:14, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.005 mg/l , sample collected Aug 11, 2014 01:14, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2014 – Dec 31, 2016
Collected
Aug 11, 2014 01:21
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
140812-029TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 11, 2014 01:21, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
6.74 ug/l , sample collected Aug 11, 2014 01:21, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 11, 2014 01:21, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 11, 2014 01:21, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.74 ug/l , sample collected Aug 11, 2014 01:21, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2014 – Dec 31, 2016
Collected
Jun 10, 2014 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140611-101PB
Laboratory
MSDH Lab
0.0552 mg/l , sample collected Jun 10, 2014 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0018 mg/l , sample collected Jun 10, 2014 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jun 10, 2014 06:41
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140611-100PB
Laboratory
MSDH Lab
0.3743 mg/l , sample collected Jun 10, 2014 06:41, 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 10, 2014 06:41, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jun 10, 2014 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140611-099PB
Laboratory
MSDH Lab
0.038 mg/l , sample collected Jun 10, 2014 07:00, 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 10, 2014 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014

Routine (10).