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; the list of samples further down is narrowed.

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

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The table below lists 1–10 of 24 samples, newest first — collected September 29, 2025 to August 4, 2026. The summary above covers all 24.

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.

Chemical and radiological sample results for Town of Centreville, every result from 1 to 10 of 24 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 Aug 4, 2026 Sampling point TF081 Treatment Plant T081 Sample type Routine Lab sample 35055946002 Laboratory Pace Analytical Services, LLC
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
Collected Aug 4, 2026 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample 35055946001 Laboratory Pace Analytical Services, LLC
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
Collected Jun 24, 2026 Sampling point TF081 Treatment Plant T081 Sample type Routine Lab sample 35046375002 Laboratory Pace Analytical Services, LLC
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
Collected Jun 24, 2026 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample 35046375001 Laboratory Pace Analytical Services, LLC
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
Collected Jan 14, 2026 13:30 Sampling point TF081 Treatment Plant T081 Sample type Routine Lab sample CN-260115-001 Laboratory MSDH Lab
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
Collected Dec 8, 2025 13:50 Sampling point TF081 Treatment Plant T081 Sample type Routine Lab sample CN-251209-005 Laboratory MSDH Lab
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
Collected Dec 8, 2025 13:30 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample CN-251209-006 Laboratory MSDH Lab
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
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
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
Collected Sep 29, 2025 14:25 Sampling point TF081 Treatment Plant T081 Sample type Routine Lab sample IN-250930-020 Laboratory MSDH Lab
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
Collected Sep 29, 2025 14:30 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample IN-250930-019 Laboratory MSDH Lab
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).