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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 11–20 of 261 samples, newest first — collected May 10, 2023 to August 28, 2024. The summary above covers all 261.

16 results from the 10 samples listed here: 6 detected, 10 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.

We withheld the location of 4 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for Humphreys Co W/A #6-Gooden Lak, every result from 11 to 20 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
Aug 28, 2024 05:30
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-240830-022
Laboratory
MSDH Lab
0.0461 mg/l , sample collected Aug 28, 2024 05:30, sampling point LC0007 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 28, 2024 05:30, sampling point LC0007 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 28, 2024 06:10
Sampling point
LC0012 Location withheld
Sample type
Routine
Lab sample
PB-240830-021
Laboratory
MSDH Lab
0.0463 mg/l , sample collected Aug 28, 2024 06:10, sampling point LC0012 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 28, 2024 06:10, sampling point LC0012 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 28, 2024 06:20
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-240830-029
Laboratory
MSDH Lab
0.0562 mg/l , sample collected Aug 28, 2024 06:20, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 28, 2024 06:20, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 28, 2024 07:00
Sampling point
LC0013 Location withheld
Sample type
Routine
Lab sample
PB-240830-027
Laboratory
MSDH Lab
0.0074 mg/l , sample collected Aug 28, 2024 07:00, sampling point LC0013 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 28, 2024 07:00, sampling point LC0013 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Mar 27, 2024 09:15
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-240328-028
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 27, 2024 09:15, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Mar 27, 2024 09:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-240328-028
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 27, 2024 09:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
Feb 7, 2024 10:05
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-240208-027
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 7, 2024 10:05, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 7, 2024 10:05, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 7, 2024 10:05, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Feb 7, 2024 10:10
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NA-240208-001
Laboratory
MSDH Lab
77.4 mg/l , sample collected Feb 7, 2024 10:10, sampling point TF101 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
May 10, 2023 13:05
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-230511-017
Laboratory
MSDH Lab
1.28 ug/l , sample collected May 10, 2023 13:05, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
May 10, 2023 13:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-230511-017
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 10, 2023 13:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded

Routine (10).