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
MS0820031 , Central Yazoo #4-Benton
23 of the 62 analytes this system has been tested for have been detected at least once, across 172 samples on record.
The other 39 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 172 samples on record, detections range from November 5, 2003 to February 9, 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 | 63 of 63 results | Aug 21, 2007 | Aug 22, 2023 |
| Lead 1030 | Inorganic Chemical | 40 of 63 results | Aug 21, 2007 | Aug 22, 2023 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 29 of 29 results | Sep 22, 2004 | Feb 9, 2026 |
| TTHM 2950 | Organic Chemical | 27 of 28 results | Sep 22, 2004 | Sep 16, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 22 of 22 results | Jun 15, 2009 | Feb 9, 2026 |
| Trichloroacetic Acid 2452 | Organic Chemical | 22 of 22 results | Jun 15, 2009 | Feb 9, 2026 |
| Chloroform 2941 | Organic Chemical | 21 of 21 results | Jun 15, 2009 | Sep 16, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 21 of 21 results | Jun 15, 2009 | Sep 16, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 11 of 21 results | Dec 14, 2009 | Sep 16, 2025 |
| Fluoride 1025 | Inorganic Chemical | 11 of 11 results | Nov 5, 2003 | Apr 7, 2025 |
| Barium 1010 | Inorganic Chemical | 10 of 10 results | Nov 5, 2003 | Apr 7, 2025 |
| Chromium 1020 | Inorganic Chemical | 7 of 10 results | Apr 5, 2004 | Apr 7, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 7 of 22 results | Sep 14, 2009 | Aug 20, 2024 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 5 of 5 results | Dec 15, 2011 | Jul 17, 2012 |
| Nickel 1036 | Inorganic Chemical | 3 of 10 results | May 10, 2010 | Apr 7, 2025 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Sep 18, 2019 | Mar 20, 2023 |
| Calcium 1016 | Inorganic Chemical | 1 of 1 result | Aug 12, 2021 | Aug 12, 2021 |
| Chloride 1017 | Inorganic Chemical | 1 of 1 result | Aug 12, 2021 | Aug 12, 2021 |
| Conductivity @ 25 C Umhos/CM 1064 | Water Quality | 1 of 1 result | Aug 12, 2021 | Aug 12, 2021 |
| Color 1905 | Water Quality | 1 of 1 result | Aug 12, 2021 | Aug 12, 2021 |
| Alkalinity, Total 1927 | Water Quality | 1 of 1 result | Aug 12, 2021 | Aug 12, 2021 |
| Selenium 1045 | Inorganic Chemical | 1 of 10 results | Apr 5, 2004 | Apr 5, 2004 |
| Sulfate 1055 | Inorganic Chemical | 1 of 3 results | Nov 5, 2003 | Nov 5, 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 91–100 of 172 samples, newest first — collected April 24, 2012 to September 16, 2014. The summary above covers all 172.
41 results from the 10 samples listed here: 15 detected, 26 not detected. Across the whole record it is 309 of 745. 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 |
|---|---|---|
|
||
| 0.007 mg/l , sample collected Sep 16, 2014 05:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2012 – Dec 31, 2014 |
| 0.0008 mg/l , sample collected Sep 16, 2014 05:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2012 – Dec 31, 2014 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 14, 2014 02:38, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.025 mg/l , sample collected Jul 14, 2014 02:38, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.014 mg/l , sample collected Jul 14, 2014 02:38, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 14, 2014 02:38, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 14, 2014 02:38, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.039 mg/l , sample collected Jul 14, 2014 02:38, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2012 – Dec 31, 2014 |
|
||
| 45.6 ug/l , sample collected Jul 14, 2014 02:37, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 14, 2014 02:37, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 4.93 ug/l , sample collected Jul 14, 2014 02:37, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 14, 2014 02:37, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 50.5 ug/l , sample collected Jul 14, 2014 02:37, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2012 – Dec 31, 2014 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 21, 2013 02:23, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2011 – Dec 31, 2013 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 3, 2013 09:42, sampling point TF101 | Arsenic 1005 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.0118 mg/l , sample collected Jun 3, 2013 09:42, sampling point TF101 | Barium 1010 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 3, 2013 09:42, sampling point TF101 | Cadmium 1015 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.0084 mg/l , sample collected Jun 3, 2013 09:42, sampling point TF101 | Chromium 1020 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 1.11 mg/l , sample collected Jun 3, 2013 09:42, sampling point TF101 | Fluoride 1025 EPA method 300.0 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 3, 2013 09:42, sampling point TF101 | Mercury 1035 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.0012 mg/l , sample collected Jun 3, 2013 09:42, sampling point TF101 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jun 3, 2013 09:42, sampling point TF101 | Selenium 1045 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 3, 2013 09:42, sampling point TF101 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 3, 2013 09:42, sampling point TF101 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 3, 2013 09:42, sampling point TF101 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 20, 2013 03:18, sampling point TF101 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2013 – Dec 31, 2013 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 20, 2013 03:18, sampling point TF101 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2013 – Dec 31, 2013 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 20, 2013 03:18, sampling point TF101 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2013 – Dec 31, 2013 |
|
||
| 1.2 pci/l , sample collected Jul 17, 2012 14:20, sampling point TF101 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 14:20, sampling point TF101 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.34 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 14:20, sampling point TF101 | Radium-226 4020 EPA method 903.1 | Jul 1, 2012 – Sep 30, 2012 |
| Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 14:20, sampling point TF101 | Radium-228 4030 EPA method 904.0 | Jul 1, 2012 – Sep 30, 2012 |
|
||
| 1.2 pci/l , sample collected Jul 16, 2012 09:00, sampling point TF101 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Jul 16, 2012 09:00, sampling point TF101 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.34 pci/l Minimum Reporting Level , sample collected Jul 16, 2012 09:00, sampling point TF101 | Radium-226 4020 EPA method 903.1 | Jul 1, 2012 – Sep 30, 2012 |
| Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Jul 16, 2012 09:00, sampling point TF101 | Radium-228 4030 EPA method 904.0 | Jul 1, 2012 – Sep 30, 2012 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 16, 2012 09:01, sampling point TF101 | Combined Uranium 4006 EPA method 200.8 | Jul 1, 2012 – Sep 30, 2012 |
|
||
| 1.2 pci/l , sample collected Apr 24, 2012 09:25, sampling point TF101 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Not recorded |
| Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Apr 24, 2012 09:25, sampling point TF101 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.34 pci/l Minimum Reporting Level , sample collected Apr 24, 2012 09:25, sampling point TF101 | Radium-226 4020 EPA method 903.1 | Apr 1, 2012 – Jun 30, 2012 |
| Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Apr 24, 2012 09:25, sampling point TF101 | Radium-228 4030 EPA method 904.0 | Apr 1, 2012 – Jun 30, 2012 |
-
- Collected
- Sep 16, 2014 05:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 140919-026PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.007 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Jul 14, 2014 02:38
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 140715-027HA
- Laboratory
- MSDH Lab
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 0.002 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 0.025 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.014 mg/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.039 mg/l
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
- Collected
- Jul 14, 2014 02:37
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 140715-027TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 45.6 ug/l
- 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
- 4.93 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
- 50.5 ug/l
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
- Collected
- Oct 21, 2013 02:23
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 131022-021CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Jun 3, 2013 09:42
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 130604-003IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Barium 1010 EPA method 200.8
- Result
- 0.0118 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Chromium 1020 EPA method 200.8
- Result
- 0.0084 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Fluoride 1025 EPA method 300.0
- Result
- 1.11 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Nickel 1036 EPA method 200.8
- Result
- 0.0012 mg/l
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0025 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
- Collected
- May 20, 2013 03:18
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 130521-016NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2013
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method QC10107041C
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Jul 17, 2012 14:20
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 201212110058
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 1.2 pci/l
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.4 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.34 pci/l Minimum Reporting Level
- Monitoring period
- Jul 1, 2012 – Sep 30, 2012
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.4 pci/l Minimum Reporting Level
- Monitoring period
- Jul 1, 2012 – Sep 30, 2012
-
- Collected
- Jul 16, 2012 09:00
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120717-096
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 1.2 pci/l
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.4 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.34 pci/l Minimum Reporting Level
- Monitoring period
- Jul 1, 2012 – Sep 30, 2012
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.4 pci/l Minimum Reporting Level
- Monitoring period
- Jul 1, 2012 – Sep 30, 2012
-
- Collected
- Jul 16, 2012 09:01
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120717-096RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2012 – Sep 30, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Apr 24, 2012 09:25
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120425-030
- Laboratory
- Radiation Safety Engineering
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 1.2 pci/l
- Monitoring period
- Not recorded
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.4 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.34 pci/l Minimum Reporting Level
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
-
Radium-228 4030 EPA method 904.0
- Result
- Not detected below 0.4 pci/l Minimum Reporting Level
- Monitoring period
- Apr 1, 2012 – Jun 30, 2012
Routine (10).