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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

MS0170010 , Horn Lake Water Association

27 of the 61 analytes this system has been tested for have been detected at least once, across 426 samples on record.

The other 34 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 426 samples on record, detections range from August 10, 1993 to February 24, 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 Horn Lake Water Association, 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 196 of 233 results Aug 10, 1993 Jul 22, 2024
Lead 1030 Inorganic Chemical 62 of 233 results Aug 10, 1993 Jul 20, 2021
Nitrate-Nitrite 1038 Inorganic Chemical 32 of 33 results May 5, 2004 Feb 24, 2026
Nitrate 1040 Inorganic Chemical 32 of 33 results May 5, 2004 Feb 24, 2026
Barium 1010 Inorganic Chemical 20 of 20 results Apr 16, 2002 Feb 6, 2024
Fluoride 1025 Inorganic Chemical 17 of 20 results Apr 16, 2002 Feb 6, 2024
Chromium 1020 Inorganic Chemical 12 of 20 results Apr 16, 2002 Feb 6, 2024
Nickel 1036 Inorganic Chemical 10 of 20 results Apr 16, 2002 Jan 9, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 8 of 40 results Jul 10, 2007 Jun 6, 2018
TTHM 2950 Organic Chemical 7 of 41 results Jul 10, 2007 Aug 17, 2020
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 17, 2019 Nov 4, 2024
Dibromochloromethane 2944 Organic Chemical 6 of 32 results Sep 16, 2008 Aug 17, 2020
Monochloroacetic Acid 2450 Organic Chemical 6 of 30 results Jun 7, 2012 Jun 6, 2018
Combined Radium (-226 & -228) 4010 Radionuclide 5 of 6 results Sep 30, 2009 Jul 20, 2020
Radium-228 4030 Radionuclide 4 of 6 results Sep 30, 2009 Jul 20, 2020
Gross Alpha Particle Activity 4109 Radionuclide 4 of 6 results Sep 30, 2009 Sep 11, 2012
Radium-226 4020 Radionuclide 3 of 6 results Sep 30, 2009 Jan 23, 2018
Bromodichloromethane 2943 Organic Chemical 2 of 32 results Aug 17, 2020 Aug 17, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 2 of 2 results Jan 23, 2018 Jul 20, 2020
Bromoform 2942 Organic Chemical 2 of 32 results Sep 16, 2008 Jul 11, 2012
Gross Alpha, Excl. Radon & U 4000 Radionuclide 2 of 4 results Sep 30, 2009 Mar 12, 2010
Gross Beta Particle Activity 4100 Radionuclide 2 of 2 results Sep 30, 2009 Mar 12, 2010
Selenium 1045 Inorganic Chemical 2 of 20 results Jan 26, 2004 Jan 23, 2006
Arsenic 1005 Inorganic Chemical 1 of 20 results Apr 2, 2008 Apr 2, 2008
Nitrite 1041 Inorganic Chemical 1 of 33 results Jun 14, 2006 Jun 14, 2006
Cadmium 1015 Inorganic Chemical 1 of 20 results Jan 23, 2006 Jan 23, 2006
Sulfate 1055 Inorganic Chemical 1 of 3 results Sep 10, 2003 Sep 10, 2003

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 261–270 of 426 samples, newest first — collected August 5, 2009 to June 2, 2010. The summary above covers all 426.

50 results from the 10 samples listed here: 17 detected, 33 not detected. Across the whole record it is 446 of 1,795. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Units in this table

Combined Uranium is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Gross Alpha Particle Activity is recorded on this page in ug/l, mg/l and pci/l.

Radium-226 is recorded on this page in ug/l, mg/l and pci/l.

Radium-228 is recorded on this page in ug/l and pci/l.

Chemical and radiological sample results for Horn Lake Water Association, every result from 261 to 270 of 426 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
Jun 2, 2010
Sampling point
TF081
Sample type
Routine
Lab sample
100603-067NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Jun 2, 2010, sampling point TF081 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 2, 2010, sampling point TF081 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 2, 2010, sampling point TF081 Nitrite 1041 EPA method 353.2 Jan 1, 2010 – Dec 31, 2010
Collected
Apr 21, 2010
Sampling point
TF081
Sample type
Routine
Lab sample
100422-018VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Xylenes, Total 2955 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Dichloromethane 2964 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 O-Dichlorobenzene 2968 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 P-Dichlorobenzene 2969 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Vinyl Chloride 2976 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 1,1-Dichloroethylene 2977 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 1,2-Dichloroethane 2980 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 1,1,1-Trichloroethane 2981 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Carbon Tetrachloride 2982 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 1,2-Dichloropropane 2983 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Trichloroethylene 2984 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 1,1,2-Trichloroethane 2985 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Tetrachloroethylene 2987 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Chlorobenzene 2989 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Benzene 2990 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Toluene 2991 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Ethylbenzene 2992 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Apr 21, 2010, sampling point TF081 Styrene 2996 EPA method 524.2 Apr 1, 2010 – Jun 30, 2010
Collected
Mar 12, 2010
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
00337-001
Laboratory
Laboratory, Ars
0.464 pci/l The agency recorded which kind of limit this result was below, but stored nothing 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 12, 2010, sampling point TF080 Gross Alpha, Excl. Radon & U 4000 Jan 1, 2010 – Mar 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 12, 2010, sampling point TF080 Combined Uranium 4006 EPA method 200.8 Jan 1, 2010 – Mar 31, 2010
0.324 pci/l The agency recorded which kind of limit this result was below, but stored nothing 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 12, 2010, sampling point TF080 Combined Radium (-226 & -228) 4010 Jan 1, 2010 – Mar 31, 2010
0.324 pci/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 12, 2010, sampling point TF080 Radium-226 4020 EPA method 903 Not recorded
Not detected below 1 pci/l Minimum Reporting Level , sample collected Mar 12, 2010, sampling point TF080 Radium-228 4030 EPA method 904 Not recorded
0.528 pci/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 12, 2010, sampling point TF080 Gross Beta Particle Activity 4100 EPA method 900 Not recorded
0.464 pci/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 12, 2010, sampling point TF080 Gross Alpha Particle Activity 4109 EPA method 900 Not recorded
Collected
Sep 30, 2009
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
02367-001
Laboratory
Laboratory, Ars
0.622 pci/l The agency recorded which kind of limit this result was below, but stored nothing 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 Sep 30, 2009, sampling point TF080 Gross Alpha, Excl. Radon & U 4000 Jul 1, 2009 – Sep 30, 2009
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 30, 2009, sampling point TF080 Combined Uranium 4006 EPA method 200.8 Jul 1, 2009 – Sep 30, 2009
0.735 pci/l The agency recorded which kind of limit this result was below, but stored nothing 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 Sep 30, 2009, sampling point TF080 Combined Radium (-226 & -228) 4010 Jul 1, 2009 – Sep 30, 2009
0.372 pci/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 Sep 30, 2009, sampling point TF080 Radium-226 4020 EPA method 903 Not recorded
0.363 pci/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 Sep 30, 2009, sampling point TF080 Radium-228 4030 EPA method 904 Not recorded
1.425 pci/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 Sep 30, 2009, sampling point TF080 Gross Beta Particle Activity 4100 EPA method 900 Not recorded
0.622 pci/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 Sep 30, 2009, sampling point TF080 Gross Alpha Particle Activity 4109 EPA method 900 Not recorded
Collected
Aug 6, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090807-020PB
Laboratory
MSDH Lab
0.0043 mg/l , sample collected Aug 6, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 6, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 6, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090807-014PB
Laboratory
MSDH Lab
0.0102 mg/l , sample collected Aug 6, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 6, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 6, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090807-012PB
Laboratory
MSDH Lab
0.0311 mg/l , sample collected Aug 6, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 6, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 6, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090807-011PB
Laboratory
MSDH Lab
0.0419 mg/l , sample collected Aug 6, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 6, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 5, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090806-045PB
Laboratory
MSDH Lab
0.0302 mg/l , sample collected Aug 5, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 5, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 5, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090806-044PB
Laboratory
MSDH Lab
0.0077 mg/l , sample collected Aug 5, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 5, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010

Routine (10).