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
MS0080001 , Black Hawk Water Assn #1
19 of the 57 analytes this system has been tested for have been detected at least once, across 251 samples on record.
The other 38 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 251 samples on record, detections range from January 11, 1994 to January 14, 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.
| Analyte | Kind | Detected in | First detected | Last detected |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 89 of 104 results | Apr 26, 1994 | Jul 24, 2023 |
| Lead 1030 | Inorganic Chemical | 43 of 104 results | Jan 11, 1994 | Jul 24, 2023 |
| Barium 1010 | Inorganic Chemical | 22 of 22 results | Jul 25, 2002 | Jan 14, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 11 of 44 results | Jun 14, 2006 | Jan 14, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 10 of 10 results | Dec 7, 2011 | Jul 13, 2012 |
| Chromium 1020 | Inorganic Chemical | 9 of 22 results | Jul 25, 2002 | Jan 14, 2025 |
| Nitrite 1041 | Inorganic Chemical | 8 of 44 results | Jun 14, 2006 | Nov 6, 2018 |
| Fluoride 1025 | Inorganic Chemical | 7 of 22 results | Mar 2, 2005 | Jan 14, 2025 |
| Nitrate 1040 | Inorganic Chemical | 5 of 44 results | May 7, 2008 | Jan 14, 2025 |
| TTHM 2950 | Organic Chemical | 4 of 17 results | Jul 10, 2007 | Aug 14, 2024 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 4 of 17 results | Jul 10, 2007 | Aug 13, 2014 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Jan 20, 2021 | Oct 15, 2024 |
| Chloroform 2941 | Organic Chemical | 3 of 13 results | Sep 6, 2017 | Aug 14, 2024 |
| Nickel 1036 | Inorganic Chemical | 3 of 22 results | Mar 12, 2008 | Apr 23, 2014 |
| Dichloroacetic Acid 2451 | Organic Chemical | 2 of 13 results | Aug 13, 2014 | Aug 13, 2014 |
| Cadmium 1015 | Inorganic Chemical | 2 of 22 results | Mar 2, 2005 | Mar 2, 2005 |
| Selenium 1045 | Inorganic Chemical | 2 of 22 results | Mar 2, 2005 | Mar 2, 2005 |
| Sulfate 1055 | Inorganic Chemical | 2 of 4 results | Sep 22, 2003 | Jan 14, 2004 |
| Trichloroacetic Acid 2452 | Organic Chemical | 1 of 13 results | Aug 13, 2014 | Aug 13, 2014 |
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 251 samples, newest first — collected December 7, 2011 to April 18, 2012. The summary above covers all 251.
26 results from the 10 samples listed here: 5 detected, 21 not detected. Across the whole record it is 230 of 1,104. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.6 pci/l , sample collected Apr 18, 2012 15:40, sampling point TF101 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| Not detected below 0.35 pci/l Minimum Reporting Level , sample collected Apr 18, 2012 15:40, sampling point TF101 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.242 pci/l Minimum Reporting Level , sample collected Apr 18, 2012 15:40, sampling point TF101 | Radium-226 4020 EPA method 903.1 | Apr 1, 2012 – Jun 30, 2012 |
| Not detected below 0.35 pci/l Minimum Reporting Level , sample collected Apr 18, 2012 15:40, sampling point TF101 | Radium-228 4030 EPA method 904.0 | Apr 1, 2012 – Jun 30, 2012 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 18, 2012 15:45, sampling point TF102 | Combined Uranium 4006 EPA method 200.8 | Apr 1, 2012 – Jun 30, 2012 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 18, 2012 15:40, sampling point TF101 | Combined Uranium 4006 EPA method 200.8 | Apr 1, 2012 – Jun 30, 2012 |
|
||
| 0.9 pci/l , sample collected Feb 22, 2012 15:25, sampling point TF102 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Feb 22, 2012 15:25, sampling point TF102 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.264 pci/l Minimum Reporting Level , sample collected Feb 22, 2012 15:25, sampling point TF102 | Radium-226 4020 EPA method 903.1 | Jan 1, 2012 – Mar 31, 2012 |
| Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Feb 22, 2012 15:25, sampling point TF102 | Radium-228 4030 EPA method 904.0 | Jan 1, 2012 – Mar 31, 2012 |
|
||
| 0.6 pci/l , sample collected Feb 22, 2012 15:20, sampling point TF101 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| Not detected below 0.35 pci/l Minimum Reporting Level , sample collected Feb 22, 2012 15:20, sampling point TF101 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.242 pci/l Minimum Reporting Level , sample collected Feb 22, 2012 15:20, sampling point TF101 | Radium-226 4020 EPA method 903.1 | Jan 1, 2012 – Mar 31, 2012 |
| Not detected below 0.35 pci/l Minimum Reporting Level , sample collected Feb 22, 2012 15:20, 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 22, 2012 15:25, 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 22, 2012 15:21, 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 17, 2012 02:50, 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 17, 2012 02:50, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| 0.02 mg/l , sample collected Jan 17, 2012 02:50, sampling point TF101 | 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 17, 2012 02:50, 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 17, 2012 02:50, 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 17, 2012 02:50, sampling point TF102 | Nitrite 1041 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| 0.9 pci/l , sample collected Dec 7, 2011 13:15, sampling point TF102 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Dec 7, 2011 13:15, sampling point TF102 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.264 pci/l Minimum Reporting Level , sample collected Dec 7, 2011 13:15, sampling point TF102 | Radium-226 4020 EPA method 903.1 | Oct 1, 2011 – Dec 31, 2011 |
| Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Dec 7, 2011 13:15, sampling point TF102 | Radium-228 4030 EPA method 904.0 | Oct 1, 2011 – Dec 31, 2011 |
-
- Collected
- Apr 18, 2012 15:40
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120419-061
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 0.6 pci/l
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.35 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.242 pci/l Minimum Reporting Level
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.35 pci/l Minimum Reporting Level
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
-
- Collected
- Apr 18, 2012 15:45
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120419-062RU
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Apr 18, 2012 15:40
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120419-061RU
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Feb 22, 2012 15:25
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120223-005
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 0.9 pci/l
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.37 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.264 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.37 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
- Collected
- Feb 22, 2012 15:20
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120223-004
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 0.6 pci/l
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.35 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.242 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.35 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
- Collected
- Feb 22, 2012 15:25
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120223-005RU
- 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 22, 2012 15:21
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120223-004RU
- 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 17, 2012 02:50
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120118-042NI
- 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
- 0.02 mg/l
-
- Collected
- Jan 17, 2012 02:50
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120118-039NI
- 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 7, 2011 13:15
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 111208-051
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 0.9 pci/l
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.37 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.264 pci/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.37 pci/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
Routine (10).