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
MS0230001 , City of Bay St Louis
43 of the 75 analytes this system has been tested for have been detected at least once, across 676 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 676 samples on record, detections range from October 15, 1992 to July 8, 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 | 251 of 319 results | Oct 15, 1992 | Sep 26, 2024 |
| Lead 1030 | Inorganic Chemical | 214 of 319 results | Oct 15, 1992 | Sep 26, 2024 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 51 of 51 results | Mar 17, 2004 | Jun 30, 2026 |
| TTHM 2950 | Organic Chemical | 51 of 51 results | Mar 17, 2004 | Jun 30, 2026 |
| Fluoride 1025 | Inorganic Chemical | 46 of 46 results | Jul 16, 2002 | Jul 8, 2026 |
| Barium 1010 | Inorganic Chemical | 42 of 42 results | Jul 16, 2002 | Jul 8, 2026 |
| Chromium 1020 | Inorganic Chemical | 34 of 42 results | Jul 16, 2002 | Feb 5, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 16 of 16 results | Sep 17, 2008 | Jun 30, 2026 |
| Sodium 1052 | Inorganic Chemical | 16 of 16 results | May 18, 2011 | Jan 31, 2024 |
| Chloroform 2941 | Organic Chemical | 15 of 16 results | Sep 17, 2008 | Jun 30, 2026 |
| Nickel 1036 | Inorganic Chemical | 14 of 38 results | Jul 16, 2002 | Feb 5, 2025 |
| Trichloroacetic Acid 2452 | Organic Chemical | 12 of 16 results | Apr 13, 2009 | Jun 30, 2026 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 11 of 11 results | Mar 7, 2012 | Apr 20, 2013 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 10 of 11 results | Sep 17, 2009 | Sep 16, 2013 |
| Monochloroacetic Acid 2450 | Organic Chemical | 8 of 16 results | Apr 13, 2009 | Jul 25, 2018 |
| Bromodichloromethane 2943 | Organic Chemical | 7 of 16 results | Apr 13, 2009 | Jun 30, 2026 |
| Arsenic 1005 | Inorganic Chemical | 7 of 42 results | Mar 9, 2005 | Feb 5, 2025 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 6 of 22 results | Sep 17, 2009 | Mar 3, 2010 |
| Radium-226 4020 | Radionuclide | 6 of 22 results | Sep 17, 2009 | Mar 3, 2010 |
| Gross Beta Particle Activity 4100 | Radionuclide | 6 of 6 results | Sep 17, 2009 | Mar 3, 2010 |
| Selenium 1045 | Inorganic Chemical | 6 of 42 results | Mar 9, 2005 | Apr 2, 2008 |
| Gross Alpha, Excl. Radon & U 4000 | Radionuclide | 5 of 6 results | Sep 17, 2009 | Mar 3, 2010 |
| Dibromochloromethane 2944 | Organic Chemical | 4 of 16 results | Apr 13, 2009 | Jun 30, 2026 |
| Calcium 1016 | Inorganic Chemical | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Chloride 1017 | Inorganic Chemical | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Magnesium 1031 | Inorganic Chemical | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Manganese 1032 | Inorganic Chemical | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Potassium 1042 | Inorganic Chemical | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Residue, Total, Filterable 1057 | Water Quality | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Alkalinity, Caco3 Stability 1067 | Water Quality | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Color 1905 | Water Quality | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Hardness, Total (As Caco3) 1915 | Water Quality | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Alkalinity, Total 1927 | Water Quality | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Calculated Sodium NACA | Water Quality | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| PH, Field Result PHFD | Water Quality | 4 of 4 results | May 18, 2011 | Mar 29, 2017 |
| Monobromoacetic Acid 2453 | Organic Chemical | 4 of 16 results | Sep 17, 2008 | Jan 5, 2010 |
| Iron 1028 | Inorganic Chemical | 3 of 4 results | Mar 29, 2017 | Mar 29, 2017 |
| Sulfate 1055 | Inorganic Chemical | 3 of 12 results | Jul 16, 2002 | Mar 29, 2017 |
| Radium-228 4030 | Radionuclide | 3 of 22 results | Sep 17, 2009 | Mar 3, 2010 |
| Cyanide 1024 | Inorganic Chemical | 2 of 38 results | Sep 19, 2011 | Sep 19, 2011 |
| Cadmium 1015 | Inorganic Chemical | 2 of 42 results | Mar 9, 2005 | Mar 9, 2005 |
| Carbon Tetrachloride 2982 | Organic Chemical | 1 of 31 results | May 4, 2022 | May 4, 2022 |
| Carbon Dioxide 1901 | Water Quality | 1 of 1 result | May 18, 2011 | May 18, 2011 |
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 191–200 of 676 samples, newest first — collected July 25, 2018 to September 12, 2018. The summary above covers all 676.
25 results from the 10 samples listed here: 18 detected, 7 not detected. Across the whole record it is 905 of 2,496. 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 |
|---|---|---|
|
||
| 0.0132 mg/l , sample collected Sep 12, 2018, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0007 mg/l , sample collected Sep 12, 2018, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.011 mg/l , sample collected Sep 12, 2018 07:15, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0007 mg/l , sample collected Sep 12, 2018 07:15, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.1235 mg/l , sample collected Sep 12, 2018 05:45, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0011 mg/l , sample collected Sep 12, 2018 05:45, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.0111 mg/l , sample collected Sep 12, 2018 07:40, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0008 mg/l , sample collected Sep 12, 2018 07:40, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.1081 mg/l , sample collected Sep 12, 2018 06:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.001 mg/l , sample collected Sep 12, 2018 06:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.2162 mg/l , sample collected Sep 12, 2018 07:20, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0006 mg/l , sample collected Sep 12, 2018 07:20, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 30, 2018 12:20, sampling point TF104 | Combined Uranium 4006 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2021 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 30, 2018 12:10, sampling point TF105 | Combined Uranium 4006 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2021 |
|
||
| 0.005 mg/l , sample collected Jul 25, 2018 12:05, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.011 mg/l , sample collected Jul 25, 2018 12:05, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.002 mg/l , sample collected Jul 25, 2018 12:05, 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 25, 2018 12:05, 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 25, 2018 12:05, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.018 mg/l , sample collected Jul 25, 2018 12:05, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2017 – Dec 31, 2019 |
|
||
| 9.61 ug/l , sample collected Jul 25, 2018 12:05, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 25, 2018 12:05, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 25, 2018 12:05, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 25, 2018 12:05, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 9.61 ug/l , sample collected Jul 25, 2018 12:05, sampling point MRT000 | TTHM 2950 | Jan 1, 2017 – Dec 31, 2019 |
-
- Collected
- Sep 12, 2018
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180914-063PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0132 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Sep 12, 2018 07:15
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180914-062PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.011 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Sep 12, 2018 05:45
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180914-060PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1235 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0011 mg/l
-
- Collected
- Sep 12, 2018 07:40
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180914-057PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0111 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Sep 12, 2018 06:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180914-056PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1081 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.001 mg/l
-
- Collected
- Sep 12, 2018 07:20
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180914-055PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2162 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0006 mg/l
-
- Collected
- Jul 30, 2018 12:20
- Sampling point
- TF104 Treatment Plant T104
- Sample type
- Routine
- Lab sample
- 180731-028RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2021
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 30, 2018 12:10
- Sampling point
- TF105 Treatment Plant T105
- Sample type
- Routine
- Lab sample
- 180731-027RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2021
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 25, 2018 12:05
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 180726-005HA
- Laboratory
- MSDH Lab
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- 0.005 mg/l
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 0.011 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.002 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
- 0.018 mg/l
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
- Collected
- Jul 25, 2018 12:05
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 180726-015TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 9.61 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
- Not detected below 1 ug/l Minimum Reporting Level
- 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
- Result
- 9.61 ug/l
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
Routine (10).