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 251–259 of 259 samples, newest first — collected September 8, 1993 to September 8, 1993. The summary above covers all 259.

18 results from the 9 samples listed here: 11 detected, 7 not detected. 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 251 to 259 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
Sep 8, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930909-118L
Laboratory
MSDH Lab
0.146 mg/l , sample collected Sep 8, 1993, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Sep 8, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Sep 8, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930909-117L
Laboratory
MSDH Lab
0.105 mg/l , sample collected Sep 8, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Sep 8, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Sep 8, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930909-116L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Sep 8, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Sep 8, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Sep 8, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930909-114L
Laboratory
MSDH Lab
0.121 mg/l , sample collected Sep 8, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.004 mg/l , sample collected Sep 8, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Sep 8, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930909-113L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Sep 8, 1993, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Sep 8, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Sep 8, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930909-112L
Laboratory
MSDH Lab
0.264 mg/l , sample collected Sep 8, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Sep 8, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Sep 8, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930909-111L
Laboratory
MSDH Lab
0.065 mg/l , sample collected Sep 8, 1993, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Sep 8, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Sep 8, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930909-110L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Sep 8, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Sep 8, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Sep 8, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930909-109L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Sep 8, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Sep 8, 1993, sampling point DS000 Lead 1030 Not recorded

Routine (9).