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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 91–100 of 505 samples, newest first — collected July 28, 2021 to February 1, 2022. The summary above covers all 505.

59 results from the 10 samples listed here: 6 detected, 53 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 3 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 91 to 100 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 1, 2022 10:00
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
NI-220202-004
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 1, 2022 10:00, sampling point TF105 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 1, 2022 10:00, sampling point TF105 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 1, 2022 10:00, sampling point TF105 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Feb 1, 2022 10:30
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
NI-220202-003
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 1, 2022 10:30, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 1, 2022 10:30, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 1, 2022 10:30, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Feb 1, 2022 11:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-220202-002
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 1, 2022 11:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 1, 2022 11:00, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 1, 2022 11:00, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Jan 26, 2022 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
VO-220127-002
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 26, 2022 13:00, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Collected
Sep 14, 2021 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
VO-210915-001
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 14, 2021 13:00, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Sep 1, 2021 13:50
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-210902-009
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 1, 2021 13:50, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2021
Collected
Sep 1, 2021 14:43
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-210902-009
Laboratory
MSDH Lab
4.21 ug/l , sample collected Sep 1, 2021 14:43, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Jul 28, 2021 06:30
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-210729-025
Laboratory
MSDH Lab
0.0958 mg/l , sample collected Jul 28, 2021 06:30, sampling point LC0001 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 28, 2021 06:30, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 28, 2021 05:45
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-210729-020
Laboratory
MSDH Lab
0.0625 mg/l , sample collected Jul 28, 2021 05:45, sampling point LC0007 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.5 ug/l , sample collected Jul 28, 2021 05:45, sampling point LC0007 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 28, 2021 06:00
Sampling point
LC0026 Location withheld
Sample type
Routine
Lab sample
PB-210729-021
Laboratory
MSDH Lab
0.0673 mg/l , sample collected Jul 28, 2021 06:00, sampling point LC0026 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.5 ug/l , sample collected Jul 28, 2021 06:00, sampling point LC0026 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021

Routine (10).