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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

MS0170022 , City of Horn Lake

31 of the 90 analytes this system has been tested for have been detected at least once, across 830 samples on record.

The other 59 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 830 samples on record, detections range from December 10, 1992 to June 30, 2026. 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 City of Horn Lake, 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 354 of 376 results Dec 10, 1992 Jul 23, 2024
Lead 1030 Inorganic Chemical 147 of 376 results Dec 10, 1992 Jul 23, 2024
TTHM 2950 Organic Chemical 57 of 64 results Mar 9, 2004 Jun 30, 2026
Barium 1010 Inorganic Chemical 53 of 53 results May 14, 2002 Feb 3, 2025
Nickel 1036 Inorganic Chemical 53 of 53 results May 14, 2002 Feb 3, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 39 of 62 results Oct 13, 2005 Sep 29, 2025
Dibromochloromethane 2944 Organic Chemical 37 of 45 results Jul 26, 2006 Jun 30, 2026
Bromodichloromethane 2943 Organic Chemical 35 of 45 results Jul 26, 2006 Sep 29, 2025
Chloroform 2941 Organic Chemical 32 of 45 results Jul 26, 2006 Sep 29, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 29 of 100 results May 5, 2004 Jun 2, 2026
Nitrate 1040 Inorganic Chemical 29 of 100 results May 5, 2004 Jun 2, 2026
Chromium 1020 Inorganic Chemical 23 of 53 results May 14, 2002 Jan 20, 2021
Dichloroacetic Acid 2451 Organic Chemical 22 of 40 results Jun 25, 2008 Sep 29, 2025
Fluoride 1025 Inorganic Chemical 20 of 55 results Jan 28, 2004 Feb 3, 2025
Bromoform 2942 Organic Chemical 14 of 45 results Jul 1, 2009 Sep 29, 2025
Monochloroacetic Acid 2450 Organic Chemical 13 of 40 results Jun 6, 2012 Aug 24, 2020
Dibromoacetic Acid 2454 Organic Chemical 12 of 40 results Jul 1, 2009 Sep 29, 2025
Sodium 1052 Inorganic Chemical 12 of 12 results Sep 17, 2019 Oct 14, 2024
Selenium 1045 Inorganic Chemical 11 of 53 results Jan 26, 2004 Apr 21, 2008
Cadmium 1015 Inorganic Chemical 10 of 53 results Feb 28, 2005 Apr 21, 2008
Sulfate 1055 Inorganic Chemical 10 of 10 results May 14, 2002 Jan 28, 2004
Xylenes, Total 2955 Organic Chemical 8 of 90 results Aug 31, 2005 Aug 24, 2021
Arsenic 1005 Inorganic Chemical 7 of 53 results Jan 25, 2006 Apr 2, 2008
Radium-226 4020 Radionuclide 6 of 14 results May 1, 2018 Jun 25, 2019
Combined Radium (-226 & -228) 4010 Radionuclide 4 of 14 results May 1, 2018 Jun 25, 2019
Radium-228 4030 Radionuclide 4 of 14 results May 1, 2018 Jun 25, 2019
Gross Alpha, Incl. Radon & U 4002 Radionuclide 3 of 6 results Jun 25, 2019 Jun 25, 2019
Trichloroacetic Acid 2452 Organic Chemical 3 of 40 results Jun 25, 2008 Apr 14, 2014
Thallium, Total 1085 Inorganic Chemical 2 of 53 results Oct 3, 2018 Feb 3, 2025
Monobromoacetic Acid 2453 Organic Chemical 2 of 40 results Jul 19, 2011 Aug 24, 2020
Ethylbenzene 2992 Organic Chemical 2 of 90 results Aug 31, 2005 May 21, 2013

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 691–700 of 830 samples, newest first — collected October 9, 2000 to May 7, 2002. The summary above covers all 830.

38 results from the 10 samples listed here: 9 detected, 29 not detected. Across the whole record it is 1,053 of 4,217. 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 City of Horn Lake, every result from 691 to 700 of 830 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
May 7, 2002
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
020508-046CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected May 7, 2002, sampling point TF081 Cyanide 1024 EPA method 335.4 Jan 1, 2002 – Dec 31, 2004
Collected
Mar 14, 2002
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
020315-002VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 1,2,4-Trichlorobenzene 2378 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Cis-1,2-Dichloroethylene 2380 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Xylenes, Total 2955 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Dichloromethane 2964 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 O-Dichlorobenzene 2968 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 P-Dichlorobenzene 2969 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Vinyl Chloride 2976 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 1,1-Dichloroethylene 2977 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Trans-1,2-Dichloroethylene 2979 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 1,2-Dichloroethane 2980 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 1,1,1-Trichloroethane 2981 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Carbon Tetrachloride 2982 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 1,2-Dichloropropane 2983 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Trichloroethylene 2984 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 1,1,2-Trichloroethane 2985 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Tetrachloroethylene 2987 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Chlorobenzene 2989 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Benzene 2990 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Toluene 2991 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Ethylbenzene 2992 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 14, 2002, sampling point TF081 Styrene 2996 Not recorded
Collected
Oct 12, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
001013-004L
Laboratory
MSDH Lab
0.024 mg/l , sample collected Oct 12, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Oct 12, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Oct 11, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
001012-002L
Laboratory
MSDH Lab
0.009 mg/l , sample collected Oct 11, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Oct 11, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Oct 11, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
001012-001L
Laboratory
MSDH Lab
0.062 mg/l , sample collected Oct 11, 2000, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Oct 11, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Oct 9, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
001010-042L
Laboratory
MSDH Lab
0.029 mg/l , sample collected Oct 9, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Oct 9, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Oct 9, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
001010-041L
Laboratory
MSDH Lab
0.039 mg/l , sample collected Oct 9, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Oct 9, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Oct 9, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
001010-040L
Laboratory
MSDH Lab
0.011 mg/l , sample collected Oct 9, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Oct 9, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Oct 9, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
001010-039L
Laboratory
MSDH Lab
0.011 mg/l , sample collected Oct 9, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Oct 9, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Oct 9, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
001010-038L
Laboratory
MSDH Lab
0.017 mg/l , sample collected Oct 9, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Oct 9, 2000, sampling point DS000 Lead 1030 Not recorded

Routine (10).