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
MS0570004 , City of McComb
25 of the 65 analytes this system has been tested for have been detected at least once, across 395 samples on record.
The other 40 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 395 samples on record, detections range from July 23, 2002 to August 19, 2025. 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 | 242 of 242 results | Jun 10, 2004 | Aug 19, 2025 |
| Lead 1030 | Inorganic Chemical | 159 of 242 results | Jun 10, 2004 | Aug 19, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 20 of 46 results | Aug 8, 2005 | Nov 1, 2021 |
| Fluoride 1025 | Inorganic Chemical | 11 of 11 results | Jul 23, 2002 | Mar 19, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 11 of 30 results | Jun 11, 2012 | Jun 11, 2018 |
| Barium 1010 | Inorganic Chemical | 10 of 10 results | Jul 23, 2002 | Mar 19, 2025 |
| Arsenic 1005 | Inorganic Chemical | 9 of 10 results | Mar 17, 2004 | Mar 19, 2025 |
| TTHM 2950 | Organic Chemical | 9 of 49 results | Aug 4, 2004 | Aug 19, 2010 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Oct 15, 2021 | Feb 24, 2025 |
| Sulfate 1055 | Inorganic Chemical | 3 of 3 results | Jul 23, 2002 | Oct 15, 2021 |
| Chromium 1020 | Inorganic Chemical | 3 of 10 results | Jul 23, 2002 | Dec 12, 2016 |
| Cadmium 1015 | Inorganic Chemical | 2 of 10 results | Apr 11, 2005 | May 8, 2013 |
| Calcium 1016 | Inorganic Chemical | 1 of 1 result | Oct 15, 2021 | Oct 15, 2021 |
| Chloride 1017 | Inorganic Chemical | 1 of 1 result | Oct 15, 2021 | Oct 15, 2021 |
| Conductivity @ 25 C Umhos/CM 1064 | Water Quality | 1 of 1 result | Oct 15, 2021 | Oct 15, 2021 |
| Alkalinity, Total 1927 | Water Quality | 1 of 1 result | Oct 15, 2021 | Oct 15, 2021 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 1 of 1 result | Sep 17, 2019 | Sep 17, 2019 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 1 of 3 results | Sep 17, 2019 | Sep 17, 2019 |
| Radium-226 4020 | Radionuclide | 1 of 3 results | Sep 17, 2019 | Sep 17, 2019 |
| Radium-228 4030 | Radionuclide | 1 of 3 results | Sep 17, 2019 | Sep 17, 2019 |
| Dichloroacetic Acid 2451 | Organic Chemical | 1 of 30 results | Dec 1, 2016 | Dec 1, 2016 |
| Nickel 1036 | Inorganic Chemical | 1 of 10 results | May 8, 2013 | May 8, 2013 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 30 results | Sep 3, 2009 | Sep 3, 2009 |
| Selenium 1045 | Inorganic Chemical | 1 of 10 results | Apr 11, 2005 | Apr 11, 2005 |
| Dichloromethane 2964 | Organic Chemical | 1 of 7 results | Aug 24, 2004 | Aug 24, 2004 |
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 331–340 of 395 samples, newest first — collected September 19, 2005 to June 6, 2006. The summary above covers all 395.
23 results from the 10 samples listed here: 7 detected, 16 not detected. Across the whole record it is 495 of 1,234. 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
TTHM is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.0033 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 Jun 6, 2006, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| 4 ug/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 Jun 6, 2006, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Mar 22, 2006, sampling point TF080 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 0.003294 mg/l , sample collected Mar 22, 2006, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.012905 mg/l , sample collected Mar 22, 2006, sampling point TF080 | Barium 1010 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 22, 2006, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 22, 2006, sampling point TF080 | Chromium 1020 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 1.018589 mg/l , sample collected Mar 22, 2006, sampling point TF080 | Fluoride 1025 EPA method 380-75WE | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 22, 2006, sampling point TF080 | Mercury 1035 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 22, 2006, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 22, 2006, sampling point TF080 | Selenium 1045 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 22, 2006, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 22, 2006, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 22, 2006, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 22, 2006, sampling point TF080 | Uranium-238 4009 | Not recorded |
|
||
| 0.0016 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 21, 2006, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| 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 |
|
||
| Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 24, 2005, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2005 – Dec 31, 2005 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 24, 2005, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Oct 1, 2005 – Dec 31, 2005 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Sep 28, 2005, sampling point TF080 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2005 – Dec 31, 2005 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Sep 28, 2005, sampling point TF080 | Nitrate 1040 EPA method 353.2 | Jan 1, 2005 – Dec 31, 2005 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Sep 28, 2005, sampling point TF080 | Nitrite 1041 EPA method 353.2 | Jan 1, 2005 – Dec 31, 2005 |
|
||
| 0.003 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 Sep 19, 2005, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jul 1, 2005 – Sep 30, 2005 |
-
- Collected
- Jun 6, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 060607-002HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.0033 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
- Jun 6, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 060607-002TH
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
TTHM 2950 EPA method 524.2
- Result
- 4 ug/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
- Mar 22, 2006
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 060323-110CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.005 mg/l Minimum Reporting Level
-
- Collected
- Mar 22, 2006
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 060323-114IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- 0.003294 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Barium 1010 EPA method 200.8
- Result
- 0.012905 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Chromium 1020 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Fluoride 1025 EPA method 380-75WE
- Result
- 1.018589 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0002 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Uranium-238 4009
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
- Collected
- Mar 21, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 060322-007HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.0016 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
- Mar 14, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 060315-014TH
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Oct 24, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 051025-012HA
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2005 – Dec 31, 2005
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- Not detected below 0.01 mg/l Minimum Reporting Level
-
- Collected
- Oct 24, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 051025-012TH
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2005 – Dec 31, 2005
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Sep 28, 2005
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 050929-047NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2005
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Sep 19, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 050920-008HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2005 – Sep 30, 2005
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.003 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.
Routine (10).