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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

MS0240060 , Naval Construction Battal CTR

41 of the 73 analytes this system has been tested for have been detected at least once, across 505 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 505 samples on record, detections range from August 30, 1993 to July 30, 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 Naval Construction Battal CTR, 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 227 of 249 results Aug 30, 1993 Jul 30, 2026
Lead 1030 Inorganic Chemical 194 of 249 results Aug 30, 1993 Jul 29, 2026
Fluoride 1025 Inorganic Chemical 36 of 37 results Sep 15, 2003 Jul 1, 2026
Barium 1010 Inorganic Chemical 34 of 34 results Sep 15, 2003 Jul 1, 2026
TTHM 2950 Organic Chemical 20 of 20 results May 24, 2004 Aug 11, 2025
Chloroform 2941 Organic Chemical 15 of 15 results Aug 2, 2007 Aug 11, 2025
Bromodichloromethane 2943 Organic Chemical 15 of 15 results Aug 2, 2007 Aug 11, 2025
Dibromochloromethane 2944 Organic Chemical 15 of 15 results Aug 2, 2007 Aug 11, 2025
Chromium 1020 Inorganic Chemical 15 of 34 results Sep 15, 2003 Nov 27, 2023
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 15 results Mar 5, 2012 Oct 3, 2012
Sodium 1052 Inorganic Chemical 12 of 12 results Aug 10, 2017 Feb 5, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 10 of 22 results Aug 2, 2007 Mar 25, 2024
Sulfate 1055 Inorganic Chemical 9 of 9 results Sep 15, 2003 Aug 10, 2017
Bromoform 2942 Organic Chemical 7 of 15 results Sep 10, 2008 Aug 6, 2024
Nickel 1036 Inorganic Chemical 7 of 31 results Jan 30, 2006 Apr 16, 2014
Arsenic 1005 Inorganic Chemical 5 of 34 results Apr 7, 2008 Jan 8, 2024
Dichloroacetic Acid 2451 Organic Chemical 4 of 16 results Jul 19, 2012 Jul 23, 2019
Selenium 1045 Inorganic Chemical 4 of 34 results Mar 9, 2005 Jan 30, 2006
Cadmium 1015 Inorganic Chemical 4 of 34 results Sep 15, 2003 Mar 9, 2005
Combined Radium (-226 & -228) 4010 Radionuclide 3 of 18 results Dec 15, 2025 Dec 15, 2025
Radium-226 4020 Radionuclide 3 of 18 results Dec 15, 2025 Dec 15, 2025
Radium-228 4030 Radionuclide 3 of 18 results Dec 15, 2025 Dec 15, 2025
Dibromoacetic Acid 2454 Organic Chemical 3 of 16 results Jul 19, 2012 Aug 6, 2024
Trichloroacetic Acid 2452 Organic Chemical 3 of 16 results Jul 19, 2012 Jul 23, 2019
Calcium 1016 Inorganic Chemical 3 of 3 results Aug 10, 2017 Aug 10, 2017
Chloride 1017 Inorganic Chemical 3 of 3 results Aug 10, 2017 Aug 10, 2017
Iron 1028 Inorganic Chemical 3 of 3 results Aug 10, 2017 Aug 10, 2017
Magnesium 1031 Inorganic Chemical 3 of 3 results Aug 10, 2017 Aug 10, 2017
Manganese 1032 Inorganic Chemical 3 of 3 results Aug 10, 2017 Aug 10, 2017
Potassium 1042 Inorganic Chemical 3 of 3 results Aug 10, 2017 Aug 10, 2017
Residue, Total, Filterable 1057 Water Quality 3 of 3 results Aug 10, 2017 Aug 10, 2017
Color 1905 Water Quality 3 of 3 results Aug 10, 2017 Aug 10, 2017
Hardness, Total (As Caco3) 1915 Water Quality 3 of 3 results Aug 10, 2017 Aug 10, 2017
Alkalinity, Total 1927 Water Quality 3 of 3 results Aug 10, 2017 Aug 10, 2017
Calculated Sodium NACA Water Quality 3 of 3 results Aug 10, 2017 Aug 10, 2017
PH, Field Result PHFD Water Quality 3 of 3 results Aug 10, 2017 Aug 10, 2017
Alkalinity, Caco3 Stability 1067 Water Quality 2 of 2 results Aug 10, 2017 Aug 10, 2017
Xylenes, Total 2955 Organic Chemical 2 of 44 results Sep 20, 2011 Aug 20, 2012
Asbestos 1094 Inorganic Chemical 1 of 2 results Apr 9, 2024 Apr 9, 2024
Monochloroacetic Acid 2450 Organic Chemical 1 of 16 results Jul 30, 2018 Jul 30, 2018
Carbon Dioxide 1901 Water Quality 1 of 1 result Aug 10, 2017 Aug 10, 2017

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 31–40 of 505 samples, newest first — collected August 21, 2024 to February 11, 2025. The summary above covers all 505.

41 results from the 10 samples listed here: 11 detected, 30 not detected. Across the whole record it is 706 of 2,359. 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 5 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 Naval Construction Battal CTR, every result from 31 to 40 of 505 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
Feb 11, 2025 10:45
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
IN-250212-040
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:45, sampling point TF105 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0062 mg/l , sample collected Feb 11, 2025 10:45, sampling point TF105 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:45, sampling point TF105 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:45, sampling point TF105 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.812 mg/l , sample collected Feb 11, 2025 10:45, sampling point TF105 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:45, sampling point TF105 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:45, sampling point TF105 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:45, sampling point TF105 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:45, sampling point TF105 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:45, sampling point TF105 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:45, sampling point TF105 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 11, 2025 11:24
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
IN-250212-041
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:24, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.007 mg/l , sample collected Feb 11, 2025 11:24, sampling point TF104 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:24, sampling point TF104 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:24, sampling point TF104 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.851 mg/l , sample collected Feb 11, 2025 11:24, sampling point TF104 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:24, sampling point TF104 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:24, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:24, sampling point TF104 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:24, sampling point TF104 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:24, sampling point TF104 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:24, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 11, 2025 10:59
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
NI-250212-025
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:59, sampling point TF105 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:59, sampling point TF105 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:59, sampling point TF105 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Feb 11, 2025 11:38
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
NI-250212-024
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:38, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:38, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 11:38, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Feb 11, 2025 10:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-250212-023
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:00, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 11, 2025 10:00, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Aug 21, 2024 11:00
Sampling point
LC0022 Location withheld
Sample type
Routine
Lab sample
PB-240822-010
Laboratory
MSDH Lab
0.0703 mg/l , sample collected Aug 21, 2024 11:00, sampling point LC0022 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2024 11:00, sampling point LC0022 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 21, 2024 14:36
Sampling point
LC0023 Location withheld
Sample type
Routine
Lab sample
PB-240822-009
Laboratory
MSDH Lab
0.0335 mg/l , sample collected Aug 21, 2024 14:36, sampling point LC0023 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2024 14:36, sampling point LC0023 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 21, 2024 12:57
Sampling point
LC0008 Location withheld
Sample type
Routine
Lab sample
PB-240822-007
Laboratory
MSDH Lab
0.0949 mg/l , sample collected Aug 21, 2024 12:57, sampling point LC0008 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.8 ug/l , sample collected Aug 21, 2024 12:57, sampling point LC0008 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 21, 2024 12:30
Sampling point
LC0013 Location withheld
Sample type
Routine
Lab sample
PB-240822-001
Laboratory
MSDH Lab
0.0394 mg/l , sample collected Aug 21, 2024 12:30, sampling point LC0013 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2024 12:30, sampling point LC0013 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 21, 2024 07:15
Sampling point
LC0031 Location withheld
Sample type
Routine
Lab sample
PB-240822-008
Laboratory
MSDH Lab
0.0571 mg/l , sample collected Aug 21, 2024 07:15, sampling point LC0031 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
1.5 ug/l , sample collected Aug 21, 2024 07:15, sampling point LC0031 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024

Routine (10).