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
MS0270024 , Humphreys Co-Tchula Lake #7
22 of the 58 analytes this system has been tested for have been detected at least once, across 185 samples on record.
The other 36 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 185 samples on record, detections range from July 28, 1993 to February 10, 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 | 92 of 112 results | Jul 28, 1993 | Aug 29, 2024 |
| Lead 1030 | Inorganic Chemical | 48 of 112 results | Jul 28, 1993 | Aug 29, 2024 |
| Barium 1010 | Inorganic Chemical | 10 of 10 results | Sep 17, 2003 | Feb 10, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 6 of 8 results | Aug 16, 2007 | Feb 10, 2025 |
| TTHM 2950 | Organic Chemical | 6 of 7 results | Aug 16, 2007 | Feb 10, 2025 |
| Fluoride 1025 | Inorganic Chemical | 6 of 10 results | Sep 17, 2003 | Mar 2, 2016 |
| Dichloroacetic Acid 2451 | Organic Chemical | 4 of 4 results | Sep 16, 2008 | Aug 6, 2018 |
| Trichloroacetic Acid 2452 | Organic Chemical | 4 of 4 results | Sep 16, 2008 | Aug 6, 2018 |
| Chloroform 2941 | Organic Chemical | 4 of 4 results | Aug 16, 2007 | Sep 24, 2014 |
| Bromodichloromethane 2943 | Organic Chemical | 4 of 4 results | Aug 16, 2007 | Sep 24, 2014 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Sep 23, 2019 | Feb 7, 2024 |
| Chromium 1020 | Inorganic Chemical | 3 of 10 results | Feb 9, 2004 | Mar 2, 2016 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 2 of 4 results | Jun 28, 2012 | Sep 10, 2012 |
| Selenium 1045 | Inorganic Chemical | 2 of 10 results | Mar 16, 2005 | Feb 27, 2006 |
| Sulfate 1055 | Inorganic Chemical | 2 of 2 results | Sep 17, 2003 | Feb 9, 2004 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 4 results | Sep 24, 2014 | Sep 24, 2014 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 1 of 2 results | Dec 5, 2011 | Dec 5, 2011 |
| Radium-228 4030 | Radionuclide | 1 of 2 results | Dec 5, 2011 | Dec 5, 2011 |
| Nickel 1036 | Inorganic Chemical | 1 of 10 results | Apr 16, 2008 | Apr 16, 2008 |
| Nitrite 1041 | Inorganic Chemical | 1 of 22 results | Apr 23, 2007 | Apr 23, 2007 |
| Cadmium 1015 | Inorganic Chemical | 1 of 10 results | Mar 16, 2005 | Mar 16, 2005 |
| Cyanide 1024 | Inorganic Chemical | 1 of 10 results | Feb 9, 2004 | Feb 9, 2004 |
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 61–70 of 185 samples, newest first — collected June 28, 2010 to July 11, 2012. The summary above covers all 185.
38 results from the 10 samples listed here: 7 detected, 31 not detected. Across the whole record it is 203 of 650. 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 |
|---|---|---|
|
||
| 0.0075 mg/l , sample collected Jul 11, 2012 01:05, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2012 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 11, 2012 01:05, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2012 |
|
||
| 0.2929 mg/l , sample collected Jul 11, 2012 12:25, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2012 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 11, 2012 12:25, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2012 |
|
||
| 0.5 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 28, 2012 13:15, sampling point TF101 | Gross Alpha Particle Activity 4109 EPA method 00-02 | Not recorded |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 2, 2012 12:45, sampling point TF101 | Arsenic 1005 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.02682 mg/l , sample collected Apr 2, 2012 12:45, sampling point TF101 | Barium 1010 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 2, 2012 12:45, sampling point TF101 | Cadmium 1015 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 2, 2012 12:45, sampling point TF101 | Chromium 1020 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.118 mg/l , sample collected Apr 2, 2012 12:45, sampling point TF101 | Fluoride 1025 EPA method 380-75WE | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 2, 2012 12:45, sampling point TF101 | Mercury 1035 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 2, 2012 12:45, sampling point TF101 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 2, 2012 12:45, sampling point TF101 | Selenium 1045 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 2, 2012 12:45, sampling point TF101 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 2, 2012 12:45, sampling point TF101 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 2, 2012 12:45, sampling point TF101 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Mar 26, 2012 01:05, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2011 – Dec 31, 2013 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 6, 2012 12:45, 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 Feb 6, 2012 12:45, 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 Feb 6, 2012 12:45, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| Not detected below 2.77 pci/l Minimum Reporting Level , sample collected Dec 5, 2011 15:35, sampling point TF101 | Gross Alpha, Excl. Radon & U 4000 | Oct 1, 2011 – Dec 31, 2011 |
| Not detected below 0.067 ug/l Minimum Reporting Level , sample collected Dec 5, 2011 15:35, sampling point TF101 | Combined Uranium 4006 EPA method 200.8 | Oct 1, 2011 – Dec 31, 2011 |
| 0.431 pci/l The agency recorded which kind of limit this result was below, but stored nothing as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 5, 2011 15:35, sampling point TF101 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.423 pci/l Minimum Reporting Level , sample collected Dec 5, 2011 15:35, sampling point TF101 | Radium-226 4020 EPA method 903.1 | Oct 1, 2011 – Dec 31, 2011 |
| 0.431 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 5, 2011 15:35, sampling point TF101 | Radium-228 4030 EPA method 904.0 | Oct 1, 2011 – Dec 31, 2011 |
| Not detected below 2.77 pci/l Minimum Reporting Level , sample collected Dec 5, 2011 15:35, sampling point TF101 | Gross Alpha Particle Activity 4109 EPA method 900.0 | Oct 1, 2011 – Dec 31, 2011 |
|
||
| Not detected below 2.77 pci/l Minimum Reporting Level , sample collected Sep 26, 2011 15:30, sampling point TF101 | Gross Alpha, Excl. Radon & U 4000 | Jul 1, 2011 – Sep 30, 2011 |
| Not detected below 0.067 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 15:30, sampling point TF101 | Combined Uranium 4006 EPA method 200.8 | Jul 1, 2011 – Sep 30, 2011 |
| Not detected below 0.869 pci/l Minimum Reporting Level , sample collected Sep 26, 2011 15:30, sampling point TF101 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.869 pci/l Minimum Reporting Level , sample collected Sep 26, 2011 15:30, sampling point TF101 | Radium-226 4020 EPA method 903.1 | Jul 1, 2011 – Sep 30, 2011 |
| Not detected below 0.585 pci/l Minimum Reporting Level , sample collected Sep 26, 2011 15:30, sampling point TF101 | Radium-228 4030 EPA method 904.0 | Jul 1, 2011 – Sep 30, 2011 |
| Not detected below 2.77 pci/l Minimum Reporting Level , sample collected Sep 26, 2011 15:30, sampling point TF101 | Gross Alpha Particle Activity 4109 EPA method 900.0 | Jul 1, 2011 – Sep 30, 2011 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 7, 2011, sampling point TF101 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2011 – Dec 31, 2011 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 7, 2011, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Jan 1, 2011 – Dec 31, 2011 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 7, 2011, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Jan 1, 2011 – Dec 31, 2011 |
|
||
| Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Jun 28, 2010, sampling point TF101 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2010 – Dec 31, 2010 |
| Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Jun 28, 2010, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Jan 1, 2010 – Dec 31, 2010 |
| Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 28, 2010, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Jan 1, 2010 – Dec 31, 2010 |
-
- Collected
- Jul 11, 2012 01:05
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 120712-012PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2010 – Dec 31, 2012
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0075 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 11, 2012 12:25
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 120712-011PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2010 – Dec 31, 2012
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2929 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 28, 2012 13:15
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 201208200093
- Laboratory
- Radiation Safety Engineering
- Monitoring period
- Not recorded
-
Gross Alpha Particle Activity 4109 EPA method 00-02
- Result
- 0.5 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
-
- Collected
- Apr 2, 2012 12:45
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120403-044IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Barium 1010 EPA method 200.8
- Result
- 0.02682 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Chromium 1020 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Fluoride 1025 EPA method 380-75WE
- Result
- 0.118 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0025 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
- Collected
- Mar 26, 2012 01:05
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120327-031CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Feb 6, 2012 12:45
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120207-093NI
- 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 5, 2011 15:35
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 291684013
- Laboratory
- Gel Laboratories
-
Gross Alpha, Excl. Radon & U 4000
- Result
- Not detected below 2.77 pci/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.067 ug/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
Combined Radium (-226 & -228) 4010
- Result
- 0.431 pci/l The agency recorded which kind of limit this result was below, but stored nothing as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.423 pci/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
Radium-228 4030 EPA method 904.0
- Result
- 0.431 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
Gross Alpha Particle Activity 4109 EPA method 900.0
- Result
- Not detected below 2.77 pci/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
- Collected
- Sep 26, 2011 15:30
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 286904018
- Laboratory
- Gel Laboratories
-
Gross Alpha, Excl. Radon & U 4000
- Result
- Not detected below 2.77 pci/l Minimum Reporting Level
- Monitoring period
- Jul 1, 2011 – Sep 30, 2011
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.067 ug/l Minimum Reporting Level
- Monitoring period
- Jul 1, 2011 – Sep 30, 2011
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.869 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.869 pci/l Minimum Reporting Level
- Monitoring period
- Jul 1, 2011 – Sep 30, 2011
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.585 pci/l Minimum Reporting Level
- Monitoring period
- Jul 1, 2011 – Sep 30, 2011
-
Gross Alpha Particle Activity 4109 EPA method 900.0
- Result
- Not detected below 2.77 pci/l Minimum Reporting Level
- Monitoring period
- Jul 1, 2011 – Sep 30, 2011
-
- Collected
- Feb 7, 2011
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 110208-039NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2011
-
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
- Jun 28, 2010
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 100629-033NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2010 – Dec 31, 2010
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.25 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.2 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.05 mg/l Minimum Reporting Level
Routine (10).