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
MS0790003 , Town of Centreville
34 of the 72 analytes this system has been tested for have been detected at least once, across 243 samples on record.
The other 38 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 243 samples on record, detections range from November 3, 2003 to August 4, 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 | 96 of 96 results | Sep 28, 2004 | Aug 19, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 24 of 44 results | Jun 16, 2004 | Aug 4, 2026 |
| Nitrate 1040 | Inorganic Chemical | 24 of 44 results | Jun 16, 2004 | Aug 4, 2026 |
| Barium 1010 | Inorganic Chemical | 22 of 22 results | Nov 3, 2003 | Jun 24, 2026 |
| Lead 1030 | Inorganic Chemical | 22 of 96 results | Sep 28, 2004 | Aug 19, 2025 |
| Nickel 1036 | Inorganic Chemical | 20 of 20 results | Nov 3, 2003 | Mar 31, 2025 |
| Chromium 1020 | Inorganic Chemical | 13 of 22 results | Nov 3, 2003 | Mar 31, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 10 of 10 results | Mar 12, 2012 | Oct 11, 2012 |
| Arsenic 1005 | Inorganic Chemical | 9 of 21 results | Apr 5, 2004 | Jun 24, 2026 |
| Sodium 1052 | Inorganic Chemical | 7 of 7 results | Jan 22, 2009 | Jun 24, 2026 |
| TTHM 2950 | Organic Chemical | 7 of 11 results | Aug 30, 2004 | Oct 19, 2022 |
| Selenium 1045 | Inorganic Chemical | 6 of 21 results | Apr 5, 2004 | Apr 17, 2006 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 5 of 10 results | Mar 12, 2012 | Oct 11, 2012 |
| Radium-226 4020 | Radionuclide | 5 of 10 results | Mar 12, 2012 | Oct 11, 2012 |
| Bromoform 2942 | Organic Chemical | 4 of 6 results | Nov 27, 2007 | Oct 26, 2020 |
| Cadmium 1015 | Inorganic Chemical | 4 of 22 results | Apr 5, 2004 | May 2, 2005 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 3 of 10 results | Aug 2, 2010 | Jul 31, 2024 |
| Dibromochloromethane 2944 | Organic Chemical | 3 of 6 results | Nov 27, 2007 | Oct 26, 2020 |
| Fluoride 1025 | Inorganic Chemical | 2 of 22 results | Mar 31, 2025 | Jun 24, 2026 |
| Cyanide 1024 | Inorganic Chemical | 1 of 21 results | Dec 8, 2025 | Dec 8, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 5 results | Oct 26, 2020 | Oct 26, 2020 |
| Calcium 1016 | Inorganic Chemical | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Chloride 1017 | Inorganic Chemical | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Magnesium 1031 | Inorganic Chemical | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Potassium 1042 | Inorganic Chemical | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Residue, Total, Filterable 1057 | Water Quality | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Alkalinity, Caco3 Stability 1067 | Water Quality | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Carbon Dioxide 1901 | Water Quality | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Hardness, Total (As Caco3) 1915 | Water Quality | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Alkalinity, Total 1927 | Water Quality | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Iron, Field Result FEFD | Inorganic Chemical | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Calculated Sodium NACA | Water Quality | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| PH, Field Result PHFD | Water Quality | 1 of 1 result | Jan 22, 2009 | Jan 22, 2009 |
| Sulfate 1055 | Inorganic Chemical | 1 of 5 results | Apr 5, 2004 | Apr 5, 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 1–10 of 243 samples, newest first — collected September 29, 2025 to August 4, 2026. The summary above covers all 243.
38 results from the 10 samples listed here: 9 detected, 29 not detected. Across the whole record it is 301 of 1,021. 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
Mercury is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.54 mg/l , sample collected Aug 4, 2026, sampling point TF081 | Nitrate-Nitrite 1038 | Not recorded |
| 0.54 mg/l , sample collected Aug 4, 2026, sampling point TF081 | Nitrate 1040 EPA method 353.2 | Not recorded |
| Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Aug 4, 2026, sampling point TF081 | Nitrite 1041 EPA method 353.2 | Not recorded |
|
||
| Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Aug 4, 2026, sampling point TF080 | Nitrate-Nitrite 1038 | Not recorded |
| Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Aug 4, 2026, sampling point TF080 | Nitrate 1040 EPA method 353.2 | Not recorded |
| Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Aug 4, 2026, sampling point TF080 | Nitrite 1041 EPA method 353.2 | Not recorded |
|
||
| 45.9 ug/l , sample collected Jun 24, 2026, sampling point TF081 | Barium 1010 EPA method 200.7 | Jan 1, 2026 – Dec 31, 2031 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 24, 2026, sampling point TF081 | Cadmium 1015 EPA method 200.7 | Jan 1, 2026 – Dec 31, 2031 |
| Not detected below 5 ug/l Minimum Reporting Level , sample collected Jun 24, 2026, sampling point TF081 | Chromium 1020 EPA method 200.7 | Jan 1, 2026 – Dec 31, 2031 |
| 8760 ug/l , sample collected Jun 24, 2026, sampling point TF081 | Sodium 1052 EPA method 200.7 | Jan 1, 2024 – Dec 31, 2026 |
| Not detected below 4 ug/l Minimum Reporting Level , sample collected Jun 24, 2026, sampling point TF081 | Beryllium, Total 1075 EPA method 200.7 | Jan 1, 2026 – Dec 31, 2031 |
|
||
| 1.2 ug/l , sample collected Jun 24, 2026, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Not recorded |
| 84.9 ug/l , sample collected Jun 24, 2026, sampling point TF080 | Barium 1010 EPA method 200.7 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 24, 2026, sampling point TF080 | Cadmium 1015 EPA method 200.7 | Not recorded |
| Not detected below 5 ug/l Minimum Reporting Level , sample collected Jun 24, 2026, sampling point TF080 | Chromium 1020 EPA method 200.7 | Not recorded |
| 0.076 mg/l , sample collected Jun 24, 2026, sampling point TF080 | Fluoride 1025 EPA method 300.0 | Not recorded |
| Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Jun 24, 2026, sampling point TF080 | Mercury 1035 EPA method 245.1 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 24, 2026, sampling point TF080 | Selenium 1045 EPA method 200.8 | Not recorded |
| 5820 ug/l , sample collected Jun 24, 2026, sampling point TF080 | Sodium 1052 EPA method 200.7 | Jan 1, 2024 – Dec 31, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 24, 2026, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Not recorded |
| Not detected below 4 ug/l Minimum Reporting Level , sample collected Jun 24, 2026, sampling point TF080 | Beryllium, Total 1075 EPA method 200.7 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 24, 2026, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Not recorded |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jan 14, 2026 13:30, sampling point TF081 | Cyanide 1024 EPA method QC10204001X | Not recorded |
|
||
| 0.222 mg/l , sample collected Dec 8, 2025 13:50, sampling point TF081 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2023 – Dec 31, 2025 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Dec 8, 2025 13:30, sampling point TF080 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2023 – Dec 31, 2025 |
|
||
| Not detected below 2 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| Not detected below 2 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2025 11:00, sampling point DS000 | TTHM 2950 EPA method 524.2 | Not recorded |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 29, 2025 14:25, sampling point TF081 | Mercury 1035 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 29, 2025 14:30, sampling point TF080 | Mercury 1035 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
-
- Collected
- Aug 4, 2026
- Sampling point
- TF081 Treatment Plant T081
- Sample type
- Routine
- Lab sample
- 35055946002
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Not recorded
-
Nitrate-Nitrite 1038
- Result
- 0.54 mg/l
-
Nitrate 1040 EPA method 353.2
- Result
- 0.54 mg/l
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.05 mg/l Minimum Reporting Level
-
- Collected
- Aug 4, 2026
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 35055946001
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Not recorded
-
Nitrate-Nitrite 1038
- Result
- Not detected below 0.05 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.05 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.05 mg/l Minimum Reporting Level
-
- Collected
- Jun 24, 2026
- Sampling point
- TF081 Treatment Plant T081
- Sample type
- Routine
- Lab sample
- 35046375002
- Laboratory
- Pace Analytical Services, LLC
-
Barium 1010 EPA method 200.7
- Result
- 45.9 ug/l
- Monitoring period
- Jan 1, 2026 – Dec 31, 2031
-
Cadmium 1015 EPA method 200.7
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2026 – Dec 31, 2031
-
Chromium 1020 EPA method 200.7
- Result
- Not detected below 5 ug/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2026 – Dec 31, 2031
-
Sodium 1052 EPA method 200.7
- Result
- 8760 ug/l
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Beryllium, Total 1075 EPA method 200.7
- Result
- Not detected below 4 ug/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2026 – Dec 31, 2031
-
- Collected
- Jun 24, 2026
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 35046375001
- Laboratory
- Pace Analytical Services, LLC
-
Arsenic 1005 EPA method 200.8
- Result
- 1.2 ug/l
- Monitoring period
- Not recorded
-
Barium 1010 EPA method 200.7
- Result
- 84.9 ug/l
- Monitoring period
- Not recorded
-
Cadmium 1015 EPA method 200.7
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Chromium 1020 EPA method 200.7
- Result
- Not detected below 5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Fluoride 1025 EPA method 300.0
- Result
- 0.076 mg/l
- Monitoring period
- Not recorded
-
Mercury 1035 EPA method 245.1
- Result
- Not detected below 0.2 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Sodium 1052 EPA method 200.7
- Result
- 5820 ug/l
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Beryllium, Total 1075 EPA method 200.7
- Result
- Not detected below 4 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
- Collected
- Jan 14, 2026 13:30
- Sampling point
- TF081 Treatment Plant T081
- Sample type
- Routine
- Lab sample
- CN-260115-001
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Dec 8, 2025 13:50
- Sampling point
- TF081 Treatment Plant T081
- Sample type
- Routine
- Lab sample
- CN-251209-005
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Cyanide 1024 EPA method QC10204001X
- Result
- 0.222 mg/l
-
- Collected
- Dec 8, 2025 13:30
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- CN-251209-006
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Oct 27, 2025 11:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 810-169666-1
- Laboratory
- Eurofins Eaton Analytical South Bend in
- Monitoring period
- Not recorded
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
-
Chloroform 2941 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Sep 29, 2025 14:25
- Sampling point
- TF081 Treatment Plant T081
- Sample type
- Routine
- Lab sample
- IN-250930-020
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 29, 2025 14:30
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- IN-250930-019
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
Routine (10).