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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.

Every analyte ever detected for Town of Centreville, with how many results found it and when it was first and last detected. Covers the whole record, not only 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 41–50 of 243 samples, newest first — collected July 20, 2022 to October 19, 2022. The summary above covers all 243.

58 results from the 10 samples listed here: 8 detected, 50 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.

We withheld the location of 6 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for Town of Centreville, every result from 41 to 50 of 243 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Oct 19, 2022 13:15
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
VO-221020-003
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 13:15, sampling point TF081 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Oct 19, 2022 12:55
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
VO-221020-002
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 19, 2022 12:55, sampling point TF080 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Jul 20, 2022 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220721-043
Laboratory
MSDH Lab
0.0011 mg/l , sample collected Jul 20, 2022 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2022 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 20, 2022 08:41
Sampling point
LC0011 Location withheld
Sample type
Routine
Lab sample
PB-220721-048
Laboratory
MSDH Lab
0.0022 mg/l , sample collected Jul 20, 2022 08:41, sampling point LC0011 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2022 08:41, sampling point LC0011 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 20, 2022 08:00
Sampling point
LC0008 Location withheld
Sample type
Routine
Lab sample
PB-220721-042
Laboratory
MSDH Lab
0.0044 mg/l , sample collected Jul 20, 2022 08:00, sampling point LC0008 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2022 08:00, sampling point LC0008 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 20, 2022 08:31
Sampling point
LC0004 Location withheld
Sample type
Routine
Lab sample
PB-220721-047
Laboratory
MSDH Lab
0.003 mg/l , sample collected Jul 20, 2022 08:31, sampling point LC0004 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2022 08:31, sampling point LC0004 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 20, 2022 07:07
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-220721-041
Laboratory
MSDH Lab
0.0054 mg/l , sample collected Jul 20, 2022 07:07, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2022 07:07, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 20, 2022 06:50
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-220721-046
Laboratory
MSDH Lab
0.0021 mg/l , sample collected Jul 20, 2022 06:50, sampling point LC0007 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2022 06:50, sampling point LC0007 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 20, 2022 05:00
Sampling point
LC0013 Location withheld
Sample type
Routine
Lab sample
PB-220721-040
Laboratory
MSDH Lab
0.003 mg/l , sample collected Jul 20, 2022 05:00, sampling point LC0013 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2022 05:00, sampling point LC0013 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jul 20, 2022 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220721-045
Laboratory
MSDH Lab
0.0008 mg/l , sample collected Jul 20, 2022 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2022 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022

Routine (10).