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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.

Analytes tested for

MS0270024 , Humphreys Co-Tchula Lake #7

Humphreys Co-Tchula Lake #7 has been analysed for 60 analytes.

This is what has been looked for, not what has been found. Which of them have been detected, and when, is on the sample results page.

The agency also publishes one analyte list across every system it serves. That list carries no results and no counts, and it leaves out coliform and the other microbiological analytes — which this page does not.

58 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 58, not 60, for that reason. The other 2 — Coliform (TCR) and E. Coli — are organisms, and their records live with the coliform and microbial samples.

Every analyte Humphreys Co-Tchula Lake #7 has been analysed for, with how many results are on record and when it was last collected. A result count is not a count of detections; which analytes have been detected is on the sample results page.
Analyte Kind Results on record Last collected
1,1,1-Trichloroethane 2981 Organic Chemical 8 May 19, 2022
1,1,2-Trichloroethane 2985 Organic Chemical 8 May 19, 2022
1,1-Dichloroethylene 2977 Organic Chemical 8 May 19, 2022
1,2,4-Trichlorobenzene 2378 Organic Chemical 8 May 19, 2022
1,2-Dichloroethane 2980 Organic Chemical 8 May 19, 2022
1,2-Dichloropropane 2983 Organic Chemical 8 May 19, 2022
Antimony, Total 1074 Inorganic Chemical 10 Feb 10, 2025
Arsenic 1005 Inorganic Chemical 10 Feb 10, 2025
Barium 1010 Inorganic Chemical 10 Feb 10, 2025
Benzene 2990 Organic Chemical 8 May 19, 2022
Beryllium, Total 1075 Inorganic Chemical 10 Feb 10, 2025
Bromodichloromethane 2943 Organic Chemical 4 Sep 24, 2014
Bromoform 2942 Organic Chemical 4 Sep 24, 2014
Cadmium 1015 Inorganic Chemical 10 Feb 10, 2025
Carbon Tetrachloride 2982 Organic Chemical 8 May 19, 2022
Chlorobenzene 2989 Organic Chemical 8 May 19, 2022
Chloroform 2941 Organic Chemical 4 Sep 24, 2014
Chromium 1020 Inorganic Chemical 10 Feb 10, 2025
Cis-1,2-Dichloroethylene 2380 Organic Chemical 8 May 19, 2022
Coliform (TCR) 3100 Organism 312 Jul 20, 2026
Combined Radium (-226 & -228) 4010 Radionuclide 2 Dec 5, 2011
Combined Uranium 4006 Radionuclide 3 Aug 21, 2018
Copper, Free 1022 Inorganic Chemical 112 Aug 29, 2024
Cyanide 1024 Inorganic Chemical 10 Sep 10, 2025
Dibromoacetic Acid 2454 Organic Chemical 4 Aug 6, 2018
Dibromochloromethane 2944 Organic Chemical 4 Sep 24, 2014
Dichloroacetic Acid 2451 Organic Chemical 4 Aug 6, 2018
Dichloromethane 2964 Organic Chemical 8 May 19, 2022
E. Coli 3014 Organism 91 Jul 20, 2026
Ethylbenzene 2992 Organic Chemical 8 May 19, 2022
Fluoride 1025 Inorganic Chemical 10 Feb 10, 2025
Gross Alpha Particle Activity 4109 Radionuclide 4 Sep 10, 2012
Gross Alpha, Excl. Radon & U 4000 Radionuclide 2 Dec 5, 2011
Lead 1030 Inorganic Chemical 112 Aug 29, 2024
Mercury 1035 Inorganic Chemical 10 Feb 10, 2025
Monobromoacetic Acid 2453 Organic Chemical 4 Aug 6, 2018
Monochloroacetic Acid 2450 Organic Chemical 4 Aug 6, 2018
Nickel 1036 Inorganic Chemical 10 Feb 10, 2025
Nitrate 1040 Inorganic Chemical 22 Feb 10, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 22 Feb 10, 2025
Nitrite 1041 Inorganic Chemical 22 Feb 10, 2025
O-Dichlorobenzene 2968 Organic Chemical 8 May 19, 2022
P-Dichlorobenzene 2969 Organic Chemical 8 May 19, 2022
Radium-226 4020 Radionuclide 2 Dec 5, 2011
Radium-228 4030 Radionuclide 2 Dec 5, 2011
Selenium 1045 Inorganic Chemical 10 Feb 10, 2025
Sodium 1052 Inorganic Chemical 3 Feb 7, 2024
Styrene 2996 Organic Chemical 8 May 19, 2022
Sulfate 1055 Inorganic Chemical 2 Feb 9, 2004
Tetrachloroethylene 2987 Organic Chemical 8 May 19, 2022
Thallium, Total 1085 Inorganic Chemical 10 Feb 10, 2025
Toluene 2991 Organic Chemical 8 May 19, 2022
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 8 Feb 10, 2025
Trans-1,2-Dichloroethylene 2979 Organic Chemical 8 May 19, 2022
Trichloroacetic Acid 2452 Organic Chemical 4 Aug 6, 2018
Trichloroethylene 2984 Organic Chemical 8 May 19, 2022
TTHM 2950 Organic Chemical 7 Feb 10, 2025
Uranium-238 4009 Radionuclide 1 Feb 27, 2006
Vinyl Chloride 2976 Organic Chemical 8 May 19, 2022
Xylenes, Total 2955 Organic Chemical 8 May 19, 2022

A result is one laboratory analysis for one analyte on one sample, whether or not anything was found. Counts cover every Accepted or Validated result on record, with no date range applied.

What an analyte is

“Analytes are contaminants and other elements (some of which are not necessarily contaminants), for which the drinking water is being analyzed.”

From the help text published with these pages.