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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 561–570 of 830 samples, newest first — collected January 25, 2006 to April 19, 2006. The summary above covers all 830.

41 results from the 10 samples listed here: 7 detected, 34 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 561 to 570 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
Apr 19, 2006
Sampling point
TF082 Treatment Plant T082
Sample type
Routine
Lab sample
060420-015CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Apr 19, 2006, sampling point TF082 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Apr 19, 2006
Sampling point
TF083
Sample type
Routine
Lab sample
060420-012CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Apr 19, 2006, sampling point TF083 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Apr 19, 2006
Sampling point
TF085 Treatment Plant T085
Sample type
Routine
Lab sample
060420-002CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Apr 19, 2006, sampling point TF085 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Mar 23, 2006
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
060324-009HA
Laboratory
MSDH Lab
0.0039 mg/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 Mar 23, 2006, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2006 – Dec 31, 2006
Collected
Mar 14, 2006
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
060315-011TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 14, 2006, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2006 – Dec 31, 2006
Collected
Feb 21, 2006
Sampling point
TF083
Sample type
Routine
Lab sample
060222-020VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Dichloromethane 2964 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Benzene 2990 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Toluene 2991 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 21, 2006, sampling point TF083 Styrene 2996 EPA method 524.2 Jan 1, 2006 – Mar 31, 2006
Collected
Jan 25, 2006
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
060126-033CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF081 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Jan 25, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
060126-034CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Jan 25, 2006
Sampling point
TF084 Treatment Plant T084
Sample type
Routine
Lab sample
060126-026CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF084 Cyanide 1024 EPA method QC10204001X Not recorded
Collected
Jan 25, 2006
Sampling point
TF084 Treatment Plant T084
Sample type
Routine
Lab sample
060126-054IN
Laboratory
MSDH Lab
0.000631 mg/l , sample collected Jan 25, 2006, sampling point TF084 Arsenic 1005 EPA method 200.8 Not recorded
0.032964 mg/l , sample collected Jan 25, 2006, sampling point TF084 Barium 1010 EPA method 200.8 Not recorded
0.000204 mg/l , sample collected Jan 25, 2006, sampling point TF084 Cadmium 1015 EPA method 200.8 Not recorded
0.002055 mg/l , sample collected Jan 25, 2006, sampling point TF084 Chromium 1020 EPA method 200.8 Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF084 Fluoride 1025 EPA method 380-75WE Not recorded
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF084 Mercury 1035 EPA method 200.8 Not recorded
0.001174 mg/l , sample collected Jan 25, 2006, sampling point TF084 Nickel 1036 EPA method 200.8 Not recorded
0.001322 mg/l , sample collected Jan 25, 2006, sampling point TF084 Selenium 1045 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF084 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF084 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF084 Thallium, Total 1085 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF084 Uranium-238 4009 Not recorded

Routine (10).