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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

MS0270022 , Humphreys Co W/A #6-Gooden Lak

20 of the 57 analytes this system has been tested for have been detected at least once, across 261 samples on record.

The other 37 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 261 samples on record, detections range from August 10, 1993 to October 28, 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.

Every analyte ever detected for Humphreys Co W/A #6-Gooden Lak, 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 142 of 175 results Aug 10, 1993 Aug 28, 2024
Lead 1030 Inorganic Chemical 32 of 175 results Aug 10, 1993 Aug 28, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 11 of 13 results Aug 16, 2007 Oct 28, 2025
Barium 1010 Inorganic Chemical 10 of 10 results Sep 24, 2003 Feb 13, 2025
Fluoride 1025 Inorganic Chemical 8 of 10 results Sep 24, 2003 Oct 24, 2018
Dichloroacetic Acid 2451 Organic Chemical 7 of 7 results Sep 25, 2008 Oct 28, 2025
Trichloroacetic Acid 2452 Organic Chemical 7 of 7 results Sep 25, 2008 Oct 28, 2025
Chloroform 2941 Organic Chemical 7 of 7 results Aug 16, 2007 Oct 28, 2025
TTHM 2950 Organic Chemical 7 of 12 results Aug 16, 2007 Oct 28, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 14, 2011 Aug 2, 2012
Bromodichloromethane 2943 Organic Chemical 4 of 7 results Sep 25, 2008 Oct 28, 2025
Chromium 1020 Inorganic Chemical 4 of 10 results Feb 11, 2004 Mar 2, 2016
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 23, 2019 Feb 7, 2024
Selenium 1045 Inorganic Chemical 3 of 10 results Mar 16, 2005 Apr 16, 2008
Sulfate 1055 Inorganic Chemical 2 of 2 results Sep 24, 2003 Feb 11, 2004
Monochloroacetic Acid 2450 Organic Chemical 1 of 7 results Jul 29, 2019 Jul 29, 2019
Monobromoacetic Acid 2453 Organic Chemical 1 of 7 results Aug 16, 2012 Aug 16, 2012
Dibromoacetic Acid 2454 Organic Chemical 1 of 7 results Aug 16, 2012 Aug 16, 2012
Nickel 1036 Inorganic Chemical 1 of 10 results Apr 16, 2008 Apr 16, 2008
Cadmium 1015 Inorganic Chemical 1 of 10 results Mar 16, 2005 Mar 16, 2005

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 101–110 of 261 samples, newest first — collected September 25, 2008 to April 18, 2012. The summary above covers all 261.

38 results from the 10 samples listed here: 7 detected, 31 not detected. Across the whole record it is 257 of 822. 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 Humphreys Co W/A #6-Gooden Lak, every result from 101 to 110 of 261 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
Apr 18, 2012 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120419-065RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 18, 2012 13:00, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 2, 2012 02:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120403-037IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 2, 2012 02:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.00152 mg/l , sample collected Apr 2, 2012 02:00, 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 02:00, 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 02:00, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.136 mg/l , sample collected Apr 2, 2012 02:00, 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 02:00, 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 02:00, 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 02:00, 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 02:00, 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 02:00, 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 02:00, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Feb 13, 2012 11:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120214-075
Laboratory
Radiation Safety Engineering
0.4 pci/l , sample collected Feb 13, 2012 11:30, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.44 pci/l Minimum Reporting Level , sample collected Feb 13, 2012 11:30, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.429 pci/l Minimum Reporting Level , sample collected Feb 13, 2012 11:30, sampling point TF101 Radium-226 4020 EPA method 903.1 Jan 1, 2012 – Mar 31, 2012
Not detected below 0.44 pci/l Minimum Reporting Level , sample collected Feb 13, 2012 11:30, sampling point TF101 Radium-228 4030 EPA method 904.0 Jan 1, 2012 – Mar 31, 2012
Collected
Feb 13, 2012 11:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120214-075RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 13, 2012 11:40, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jan 1, 2012 – Mar 31, 2012
Collected
Feb 6, 2012 01:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120207-029NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 6, 2012 01:45, 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 01:45, 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 01:45, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Collected
Dec 14, 2011 14:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
111215-020
Laboratory
Radiation Safety Engineering
0.4 pci/l , sample collected Dec 14, 2011 14:30, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.44 pci/l Minimum Reporting Level , sample collected Dec 14, 2011 14:30, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.429 pci/l Minimum Reporting Level , sample collected Dec 14, 2011 14:30, sampling point TF101 Radium-226 4020 EPA method 903.1 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.44 pci/l Minimum Reporting Level , sample collected Dec 14, 2011 14:30, sampling point TF101 Radium-228 4030 EPA method 904.0 Oct 1, 2011 – Dec 31, 2011
Collected
Feb 7, 2011
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
110208-031NI
Laboratory
MSDH Lab
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
Collected
Jun 28, 2010
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
100629-044NI
Laboratory
MSDH Lab
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
Apr 13, 2009
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
090414-035NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Apr 13, 2009, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Apr 13, 2009, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Apr 13, 2009, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Sep 25, 2008
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
080926-002TH
Laboratory
MSDH Lab
2.9 ug/l , sample collected Sep 25, 2008, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2008, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
1.21 ug/l , sample collected Sep 25, 2008, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2008, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
4.11 ug/l , sample collected Sep 25, 2008, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2008 – Dec 31, 2010

Routine (10).