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.
| 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 141–150 of 259 samples, newest first — collected December 6, 2011 to March 13, 2012. The summary above covers all 259.
34 results from the 10 samples listed here: 8 detected, 26 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.
Units in this table
Combined Uranium is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Mar 13, 2012 14:30, sampling point TF102 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Mar 13, 2012 14:30, sampling point TF102 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.177 pci/l Minimum Reporting Level , sample collected Mar 13, 2012 14:30, sampling point TF102 | Radium-226 4020 EPA method 903.1 | Jan 1, 2012 – Mar 31, 2012 |
| Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Mar 13, 2012 14:30, sampling point TF102 | Radium-228 4030 EPA method 904.0 | Jan 1, 2012 – Mar 31, 2012 |
|
||
| Not detected below 2.9 pci/l Minimum Reporting Level , sample collected Mar 13, 2012 14:30, sampling point TF102 | Gross Alpha, Excl. Radon & U 4000 | Not recorded |
| Not detected below 0.067 ug/l Minimum Reporting Level , sample collected Mar 13, 2012 14:30, sampling point TF102 | Combined Uranium 4006 EPA method 200.8 | Jan 1, 2012 – Mar 31, 2012 |
| Not detected below 0.696 pci/l Minimum Reporting Level , sample collected Mar 13, 2012 14:30, sampling point TF102 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.599 pci/l Minimum Reporting Level , sample collected Mar 13, 2012 14:30, sampling point TF102 | Radium-226 4020 EPA method 903.1 | Jan 1, 2012 – Mar 31, 2012 |
| Not detected below 0.696 pci/l Minimum Reporting Level , sample collected Mar 13, 2012 14:30, sampling point TF102 | Radium-228 4030 EPA method 904.0 | Jan 1, 2012 – Mar 31, 2012 |
| Not detected below 2.9 pci/l Minimum Reporting Level , sample collected Mar 13, 2012 14:30, sampling point TF102 | Gross Alpha Particle Activity 4109 EPA method 900.0 | Jan 1, 2012 – Mar 31, 2012 |
|
||
| Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Feb 15, 2012 14:04, sampling point TF102 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Feb 15, 2012 14:04, sampling point TF102 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.177 pci/l Minimum Reporting Level , sample collected Feb 15, 2012 14:04, sampling point TF102 | Radium-226 4020 EPA method 903.1 | Jan 1, 2012 – Mar 31, 2012 |
| Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Feb 15, 2012 14:04, sampling point TF102 | Radium-228 4030 EPA method 904.0 | Jan 1, 2012 – Mar 31, 2012 |
|
||
| 17 pci/l , sample collected Feb 15, 2012 13:40, sampling point TF101 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| 8.4 pci/l , sample collected Feb 15, 2012 13:40, sampling point TF101 | Combined Radium (-226 & -228) 4010 | Not recorded |
| 7.5 pci/l , sample collected Feb 15, 2012 13:40, sampling point TF101 | Radium-226 4020 EPA method 903.1 | Jan 1, 2012 – Mar 31, 2012 |
| 0.9 pci/l , sample collected Feb 15, 2012 13:40, sampling point TF101 | Radium-228 4030 EPA method 904.0 | Jan 1, 2012 – Mar 31, 2012 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 15, 2012 14:08, sampling point TF102 | Combined Uranium 4006 EPA method 200.8 | Jan 1, 2012 – Mar 31, 2012 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 15, 2012 13:43, sampling point TF101 | Combined Uranium 4006 EPA method 200.8 | Jan 1, 2012 – Mar 31, 2012 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 18, 2012 01:16, sampling point TF102 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 18, 2012 01:16, sampling point TF102 | Nitrate 1040 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 18, 2012 01:16, sampling point TF102 | Nitrite 1041 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 18, 2012 12:35, sampling point TF101 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 18, 2012 12:35, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 18, 2012 12:35, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Dec 6, 2011 12:59, sampling point TF102 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Dec 6, 2011 12:59, sampling point TF102 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.177 pci/l Minimum Reporting Level , sample collected Dec 6, 2011 12:59, sampling point TF102 | Radium-226 4020 EPA method 903.1 | Oct 1, 2011 – Dec 31, 2011 |
| Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Dec 6, 2011 12:59, sampling point TF102 | Radium-228 4030 EPA method 904.0 | Oct 1, 2011 – Dec 31, 2011 |
|
||
| 17 pci/l , sample collected Dec 6, 2011 12:20, sampling point TF101 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| 8.4 pci/l , sample collected Dec 6, 2011 12:20, sampling point TF101 | Combined Radium (-226 & -228) 4010 | Not recorded |
| 7.5 pci/l , sample collected Dec 6, 2011 12:20, sampling point TF101 | Radium-226 4020 EPA method 903.1 | Oct 1, 2011 – Dec 31, 2011 |
| 0.9 pci/l , sample collected Dec 6, 2011 12:20, sampling point TF101 | Radium-228 4030 EPA method 904.0 | Oct 1, 2011 – Dec 31, 2011 |
-
- Collected
- Mar 13, 2012 14:30
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 297868002
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- Not detected below 0.31 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.31 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.177 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.31 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
- Collected
- Mar 13, 2012 14:30
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 297868002
- Laboratory
- Gel Laboratories
-
Gross Alpha, Excl. Radon & U 4000
- Result
- Not detected below 2.9 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.067 ug/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.696 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.599 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.696 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Gross Alpha Particle Activity 4109 EPA method 900.0
- Result
- Not detected below 2.9 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
- Collected
- Feb 15, 2012 14:04
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120216-089
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- Not detected below 0.31 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.31 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.177 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.31 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
- Collected
- Feb 15, 2012 13:40
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120216-088
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 17 pci/l
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- 8.4 pci/l
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- 7.5 pci/l
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Radium-228 4030 EPA method 904.0
- Result
- 0.9 pci/l
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
- Collected
- Feb 15, 2012 14:08
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120216-089RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Feb 15, 2012 13:43
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120216-088RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jan 18, 2012 01:16
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120119-031NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2012
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Jan 18, 2012 12:35
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120119-027NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2012
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Dec 6, 2011 12:59
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 111207-011
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- Not detected below 0.31 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.31 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.177 pci/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.31 pci/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
- Collected
- Dec 6, 2011 12:20
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 111207-010
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 17 pci/l
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- 8.4 pci/l
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- 7.5 pci/l
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
Radium-228 4030 EPA method 904.0
- Result
- 0.9 pci/l
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
Routine (10).