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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 81–90 of 243 samples, newest first — collected September 28, 2016 to May 21, 2019. The summary above covers all 243.

80 results from the 10 samples listed here: 18 detected, 62 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.

Chemical and radiological sample results for Town of Centreville, every result from 81 to 90 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
May 21, 2019 01:20
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
190522-005IN
Laboratory
MSDH Lab
0.0008 mg/l , sample collected May 21, 2019 01:20, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0828 mg/l , sample collected May 21, 2019 01:20, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:20, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:20, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:20, sampling point TF080 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:20, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0007 mg/l , sample collected May 21, 2019 01:20, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:20, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:20, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:20, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:20, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
May 21, 2019 01:33
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
190522-004IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:33, sampling point TF081 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.044 mg/l , sample collected May 21, 2019 01:33, sampling point TF081 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:33, sampling point TF081 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0035 mg/l , sample collected May 21, 2019 01:33, sampling point TF081 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:33, sampling point TF081 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:33, sampling point TF081 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0031 mg/l , sample collected May 21, 2019 01:33, sampling point TF081 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:33, sampling point TF081 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:33, sampling point TF081 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:33, sampling point TF081 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 01:33, sampling point TF081 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Apr 9, 2018 13:20
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
180410-009NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 9, 2018 13:20, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 9, 2018 13:20, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 9, 2018 13:20, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Apr 9, 2018 13:32
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
180410-007NI
Laboratory
MSDH Lab
1.32 mg/l , sample collected Apr 9, 2018 13:32, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
1.32 mg/l , sample collected Apr 9, 2018 13:32, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 9, 2018 13:32, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Apr 11, 2017 01:25
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
170412-021NI
Laboratory
MSDH Lab
1.59 mg/l , sample collected Apr 11, 2017 01:25, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
1.59 mg/l , sample collected Apr 11, 2017 01:25, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 11, 2017 01:25, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Apr 11, 2017 01:10
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
170412-018NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 11, 2017 01:10, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 11, 2017 01:10, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 11, 2017 01:10, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Dec 13, 2016 01:15
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
161214-059IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:15, sampling point TF081 Arsenic 1005 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.044 mg/l , sample collected Dec 13, 2016 01:15, sampling point TF081 Barium 1010 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:15, sampling point TF081 Cadmium 1015 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:15, sampling point TF081 Chromium 1020 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:15, sampling point TF081 Fluoride 1025 EPA method 300.0 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:15, sampling point TF081 Mercury 1035 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0009 mg/l , sample collected Dec 13, 2016 01:15, sampling point TF081 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:15, sampling point TF081 Selenium 1045 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:15, sampling point TF081 Antimony, Total 1074 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:15, sampling point TF081 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:15, sampling point TF081 Thallium, Total 1085 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Collected
Dec 13, 2016 01:05
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
161214-058IN
Laboratory
MSDH Lab
0.0008 mg/l , sample collected Dec 13, 2016 01:05, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0843 mg/l , sample collected Dec 13, 2016 01:05, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:05, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0007 mg/l , sample collected Dec 13, 2016 01:05, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:05, sampling point TF080 Fluoride 1025 EPA method 300.0 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:05, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0007 mg/l , sample collected Dec 13, 2016 01:05, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:05, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:05, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:05, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 13, 2016 01:05, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Collected
Nov 28, 2016 13:00
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
161129-028NI
Laboratory
MSDH Lab
1.4 mg/l , sample collected Nov 28, 2016 13:00, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
1.4 mg/l , sample collected Nov 28, 2016 13:00, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 28, 2016 13:00, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Sep 28, 2016 01:35
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
160929-004VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Dichloromethane 2964 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Benzene 2990 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Toluene 2991 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 28, 2016 01:35, sampling point TF081 Styrene 2996 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016

Routine (10).