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
MS0170024 , City of Horn Lake - Holly Hills
25 of the 57 analytes this system has been tested for have been detected at least once, across 257 samples on record.
The other 32 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 257 samples on record, detections range from August 11, 1993 to February 23, 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.
| Analyte | Kind | Detected in | First detected | Last detected |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 128 of 145 results | Aug 11, 1993 | Jul 30, 2025 |
| Lead 1030 | Inorganic Chemical | 82 of 145 results | Aug 11, 1993 | Jul 30, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 23 of 23 results | May 12, 2004 | Feb 23, 2026 |
| Nitrate 1040 | Inorganic Chemical | 23 of 23 results | May 12, 2004 | Feb 23, 2026 |
| TTHM 2950 | Organic Chemical | 13 of 20 results | Jul 10, 2007 | Jun 4, 2025 |
| Barium 1010 | Inorganic Chemical | 11 of 11 results | May 14, 2002 | Feb 3, 2025 |
| Fluoride 1025 | Inorganic Chemical | 10 of 11 results | May 14, 2002 | Feb 3, 2025 |
| Nickel 1036 | Inorganic Chemical | 10 of 11 results | May 14, 2002 | Feb 3, 2025 |
| Chromium 1020 | Inorganic Chemical | 9 of 11 results | Jan 28, 2004 | Feb 3, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 8 of 15 results | Sep 4, 2024 | Jun 4, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 8 of 20 results | Jul 10, 2007 | Jul 25, 2023 |
| Bromoform 2942 | Organic Chemical | 7 of 15 results | Sep 4, 2024 | Jun 4, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 7 of 24 results | Apr 21, 2008 | Apr 12, 2010 |
| Bromodichloromethane 2943 | Organic Chemical | 5 of 15 results | Jul 10, 2007 | Jun 4, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 5 of 5 results | Dec 12, 2011 | Jul 11, 2012 |
| Dichloroacetic Acid 2451 | Organic Chemical | 4 of 14 results | Jul 10, 2012 | Aug 24, 2020 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Sep 17, 2019 | Oct 14, 2024 |
| Chloroform 2941 | Organic Chemical | 2 of 15 results | Sep 3, 2014 | Sep 4, 2024 |
| Monochloroacetic Acid 2450 | Organic Chemical | 2 of 14 results | Jul 10, 2012 | Jul 18, 2019 |
| Trichloroacetic Acid 2452 | Organic Chemical | 2 of 14 results | Sep 3, 2014 | Sep 3, 2014 |
| Cadmium 1015 | Inorganic Chemical | 2 of 11 results | Feb 28, 2005 | Jan 25, 2006 |
| Selenium 1045 | Inorganic Chemical | 2 of 11 results | Feb 28, 2005 | Jan 25, 2006 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 14 results | Aug 24, 2020 | Aug 24, 2020 |
| Ethylbenzene 2992 | Organic Chemical | 1 of 24 results | Apr 21, 2008 | Apr 21, 2008 |
| Arsenic 1005 | Inorganic Chemical | 1 of 11 results | Apr 2, 2008 | Apr 2, 2008 |
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 161–170 of 257 samples, newest first — collected July 10, 2007 to August 14, 2007. The summary above covers all 257.
22 results from the 10 samples listed here: 17 detected, 5 not detected. Across the whole record it is 369 of 1,193. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.1152 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0013 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0785 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0009 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0308 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0011 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0976 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 14, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.1189 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0015 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0349 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0017 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0625 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 14, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0942 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.001 mg/l , sample collected Aug 14, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0115 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 Jul 10, 2007, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 10, 2007, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 10, 2007, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 1.06 ug/l , sample collected Jul 10, 2007, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 10, 2007, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 1.06 ug/l , sample collected Jul 10, 2007, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2005 – Dec 31, 2007 |
-
- Collected
- Aug 14, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070815-336PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1152 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0013 mg/l
-
- Collected
- Aug 14, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070815-534PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0785 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0009 mg/l
-
- Collected
- Aug 14, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070815-330PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0308 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0011 mg/l
-
- Collected
- Aug 14, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070815-532PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0976 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Aug 14, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070815-323PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1189 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0015 mg/l
-
- Collected
- Aug 14, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070815-535PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0349 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0017 mg/l
-
- Collected
- Aug 14, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070815-536PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0625 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Aug 14, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070815-537PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0942 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.001 mg/l
-
- Collected
- Jul 10, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070711-001HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.0115 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.
-
- Collected
- Jul 10, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070711-001TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 1.06 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 1.06 ug/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
Routine (10).