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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

MS0300010 , Ingalls Shipbuilding

39 of the 68 analytes this system has been tested for have been detected at least once, across 785 samples on record.

The other 29 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 785 samples on record, detections range from February 5, 2002 to December 10, 2025. 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 Ingalls Shipbuilding, 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
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 232 of 232 results Mar 10, 2004 Oct 29, 2025
TTHM 2950 Organic Chemical 230 of 230 results Mar 10, 2004 Dec 10, 2025
Copper, Free 1022 Inorganic Chemical 220 of 220 results Jun 22, 2004 Jul 28, 2024
Chloroform 2941 Organic Chemical 165 of 165 results Aug 17, 2006 Dec 10, 2025
Lead 1030 Inorganic Chemical 165 of 220 results Jun 22, 2004 Jul 28, 2024
Bromodichloromethane 2943 Organic Chemical 164 of 165 results Aug 17, 2006 Dec 10, 2025
Dibromochloromethane 2944 Organic Chemical 164 of 165 results Aug 17, 2006 Dec 10, 2025
Bromoform 2942 Organic Chemical 163 of 165 results Aug 17, 2006 Dec 10, 2025
Trichloroacetic Acid 2452 Organic Chemical 156 of 158 results Jan 22, 2008 Oct 29, 2025
Dibromoacetic Acid 2454 Organic Chemical 156 of 158 results Jan 22, 2008 Oct 29, 2025
Dichloroacetic Acid 2451 Organic Chemical 154 of 158 results Jan 22, 2008 Oct 29, 2025
Monochloroacetic Acid 2450 Organic Chemical 39 of 158 results Jan 22, 2008 Nov 21, 2019
Fluoride 1025 Inorganic Chemical 23 of 23 results Feb 5, 2002 Feb 11, 2025
Barium 1010 Inorganic Chemical 20 of 20 results Feb 5, 2002 Feb 11, 2025
Monobromoacetic Acid 2453 Organic Chemical 14 of 158 results May 9, 2011 Oct 21, 2020
Chromium 1020 Inorganic Chemical 9 of 20 results Feb 5, 2002 May 17, 2022
Arsenic 1005 Inorganic Chemical 8 of 20 results Feb 8, 2006 Feb 11, 2025
Selenium 1045 Inorganic Chemical 8 of 20 results Mar 14, 2005 May 17, 2022
Nickel 1036 Inorganic Chemical 4 of 20 results Mar 14, 2005 May 10, 2010
Calcium 1016 Inorganic Chemical 3 of 3 results Jun 2, 2017 Jun 2, 2017
Chloride 1017 Inorganic Chemical 3 of 3 results Jun 2, 2017 Jun 2, 2017
Iron 1028 Inorganic Chemical 3 of 3 results Jun 2, 2017 Jun 2, 2017
Magnesium 1031 Inorganic Chemical 3 of 3 results Jun 2, 2017 Jun 2, 2017
Manganese 1032 Inorganic Chemical 3 of 3 results Jun 2, 2017 Jun 2, 2017
Potassium 1042 Inorganic Chemical 3 of 3 results Jun 2, 2017 Jun 2, 2017
Sodium 1052 Inorganic Chemical 3 of 3 results Jun 2, 2017 Jun 2, 2017
Alkalinity, Caco3 Stability 1067 Water Quality 3 of 3 results Jun 2, 2017 Jun 2, 2017
Carbon Dioxide 1901 Water Quality 3 of 3 results Jun 2, 2017 Jun 2, 2017
Color 1905 Water Quality 3 of 3 results Jun 2, 2017 Jun 2, 2017
Hardness, Total (As Caco3) 1915 Water Quality 3 of 3 results Jun 2, 2017 Jun 2, 2017
Alkalinity, Total 1927 Water Quality 3 of 3 results Jun 2, 2017 Jun 2, 2017
Calculated Sodium NACA Water Quality 3 of 3 results Jun 2, 2017 Jun 2, 2017
PH, Field Result PHFD Water Quality 3 of 3 results Jun 2, 2017 Jun 2, 2017
Sulfate 1055 Inorganic Chemical 3 of 10 results Sep 22, 2003 Sep 22, 2003
Residue, Total, Filterable 1057 Water Quality 2 of 2 results Jun 2, 2017 Jun 2, 2017
Carbon Tetrachloride 2982 Organic Chemical 2 of 27 results Mar 1, 2007 Mar 1, 2007
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 30 results Aug 9, 2010 Aug 9, 2010
Nitrate 1040 Inorganic Chemical 1 of 30 results Aug 9, 2010 Aug 9, 2010
Nitrite 1041 Inorganic Chemical 1 of 30 results Apr 23, 2007 Apr 23, 2007

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 121–130 of 785 samples, newest first — collected January 18, 2022 to April 13, 2022. The summary above covers all 785.

12 results from the 10 samples listed here: 9 detected, 3 not detected. Across the whole record it is 2,146 of 3,312. 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 Ingalls Shipbuilding, every result from 121 to 130 of 785 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
Apr 13, 2022 13:06
Sampling point
SM4 Panel Shop
Sample type
Routine
Lab sample
HA-220414-011
Laboratory
MSDH Lab
16.8 ug/l , sample collected Apr 13, 2022 13:06, sampling point SM4 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2022 – Jun 30, 2022
Collected
Apr 13, 2022 12:10
Sampling point
SM2 At Multi-Purpose Whse
Sample type
Routine
Lab sample
HA-220414-010
Laboratory
MSDH Lab
16.1 ug/l , sample collected Apr 13, 2022 12:10, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2022 – Jun 30, 2022
Collected
Apr 13, 2022 12:43
Sampling point
SM1 Control Room Near Well 2
Sample type
Routine
Lab sample
HA-220414-009
Laboratory
MSDH Lab
15.6 ug/l , sample collected Apr 13, 2022 12:43, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2022 – Jun 30, 2022
Collected
Apr 13, 2022 12:24
Sampling point
SM6 At Fab Shop
Sample type
Routine
Lab sample
TH-220414-012
Laboratory
MSDH Lab
44.1 ug/l , sample collected Apr 13, 2022 12:24, sampling point SM6 TTHM 2950 EPA method 524.2 Apr 1, 2022 – Jun 30, 2022
Collected
Apr 13, 2022 13:05
Sampling point
SM4 Panel Shop
Sample type
Routine
Lab sample
TH-220414-011
Laboratory
MSDH Lab
51 ug/l , sample collected Apr 13, 2022 13:05, sampling point SM4 TTHM 2950 EPA method 524.2 Apr 1, 2022 – Jun 30, 2022
Collected
Apr 13, 2022 12:09
Sampling point
SM2 At Multi-Purpose Whse
Sample type
Routine
Lab sample
TH-220414-010
Laboratory
MSDH Lab
42.7 ug/l , sample collected Apr 13, 2022 12:09, sampling point SM2 TTHM 2950 EPA method 524.2 Apr 1, 2022 – Jun 30, 2022
Collected
Apr 13, 2022 12:42
Sampling point
SM1 Control Room Near Well 2
Sample type
Routine
Lab sample
TH-220414-009
Laboratory
MSDH Lab
39.7 ug/l , sample collected Apr 13, 2022 12:42, sampling point SM1 TTHM 2950 EPA method 524.2 Apr 1, 2022 – Jun 30, 2022
Collected
Feb 1, 2022 12:38
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-220202-021
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 1, 2022 12:38, sampling point TF101 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 12:38, sampling point TF101 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 12:38, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Jan 18, 2022 12:10
Sampling point
SM6 At Fab Shop
Sample type
Routine
Lab sample
HA-220119-010
Laboratory
MSDH Lab
21.4 ug/l , sample collected Jan 18, 2022 12:10, sampling point SM6 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2022 – Mar 31, 2022
Collected
Jan 18, 2022 12:50
Sampling point
SM4 Panel Shop
Sample type
Routine
Lab sample
HA-220119-009
Laboratory
MSDH Lab
17.8 ug/l , sample collected Jan 18, 2022 12:50, sampling point SM4 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2022 – Mar 31, 2022

Routine (10).