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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

MS0240003 , City of Gulfport

55 of the 75 analytes this system has been tested for have been detected at least once, across 2,424 samples on record.

The other 20 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 2,424 samples on record, detections range from August 31, 1992 to March 18, 2025. 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 City of Gulfport, 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
Lead 1030 Inorganic Chemical 498 of 675 results Aug 31, 1992 Jul 7, 2023
Copper, Free 1022 Inorganic Chemical 497 of 675 results Aug 31, 1992 Jul 7, 2023
Fluoride 1025 Inorganic Chemical 271 of 275 results Apr 16, 2002 Feb 10, 2025
Barium 1010 Inorganic Chemical 270 of 270 results Apr 16, 2002 Feb 10, 2025
Chromium 1020 Inorganic Chemical 163 of 270 results Apr 16, 2002 Feb 10, 2025
Nickel 1036 Inorganic Chemical 84 of 270 results Sep 10, 2003 Feb 10, 2025
Sulfate 1055 Inorganic Chemical 71 of 71 results Apr 16, 2002 May 21, 2010
Sodium 1052 Inorganic Chemical 60 of 60 results May 21, 2010 Jan 31, 2024
TTHM 2950 Organic Chemical 58 of 59 results Mar 8, 2004 Mar 18, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 48 of 56 results Apr 5, 2005 Mar 18, 2025
Xylenes, Total 2955 Organic Chemical 43 of 360 results Apr 20, 2004 Jan 3, 2022
Selenium 1045 Inorganic Chemical 40 of 270 results Apr 16, 2002 Apr 9, 2008
Chloroform 2941 Organic Chemical 38 of 39 results Jul 24, 2006 Dec 15, 2020
Bromodichloromethane 2943 Organic Chemical 36 of 39 results Jul 24, 2006 Dec 15, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 36 of 46 results Mar 5, 2012 Jul 31, 2020
Dichloroacetic Acid 2451 Organic Chemical 33 of 34 results Jun 26, 2008 Dec 15, 2020
Arsenic 1005 Inorganic Chemical 31 of 270 results Apr 16, 2002 Feb 10, 2025
Dibromochloromethane 2944 Organic Chemical 31 of 39 results Jul 24, 2006 Dec 15, 2020
Radium-226 4020 Radionuclide 30 of 113 results Jan 28, 2009 Oct 7, 2019
Trichloroacetic Acid 2452 Organic Chemical 25 of 34 results Jun 26, 2008 Dec 15, 2020
Ethylbenzene 2992 Organic Chemical 22 of 360 results Jul 22, 2004 May 19, 2021
Combined Radium (-226 & -228) 4010 Radionuclide 20 of 115 results Dec 19, 2008 Oct 7, 2019
Radium-228 4030 Radionuclide 18 of 113 results Dec 19, 2008 Oct 7, 2019
Gross Alpha Particle Activity 4109 Radionuclide 16 of 70 results Dec 19, 2008 Jan 16, 2013
Cadmium 1015 Inorganic Chemical 14 of 270 results Sep 15, 2003 Feb 6, 2006
Dibromoacetic Acid 2454 Organic Chemical 12 of 34 results Jun 26, 2008 Jul 23, 2019
Gross Alpha, Excl. Radon & U 4000 Radionuclide 11 of 50 results Dec 19, 2008 Nov 29, 2011
Mercury 1035 Inorganic Chemical 11 of 270 results Apr 16, 2002 Mar 7, 2005
Nitrite 1041 Inorganic Chemical 7 of 501 results May 12, 2004 Jan 19, 2022
Nitrate 1040 Inorganic Chemical 6 of 501 results May 12, 2004 Jan 19, 2022
Monochloroacetic Acid 2450 Organic Chemical 6 of 34 results Jun 5, 2012 Jul 23, 2019
Nitrate-Nitrite 1038 Inorganic Chemical 5 of 501 results May 12, 2004 Jan 19, 2022
Calcium 1016 Inorganic Chemical 5 of 5 results May 21, 2010 May 21, 2010
Chloride 1017 Inorganic Chemical 5 of 5 results May 21, 2010 May 21, 2010
Manganese 1032 Inorganic Chemical 5 of 5 results May 21, 2010 May 21, 2010
Potassium 1042 Inorganic Chemical 5 of 5 results May 21, 2010 May 21, 2010
Residue, Total, Filterable 1057 Water Quality 5 of 5 results May 21, 2010 May 21, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 5 of 5 results May 21, 2010 May 21, 2010
Carbon Dioxide 1901 Water Quality 5 of 5 results May 21, 2010 May 21, 2010
Color 1905 Water Quality 5 of 5 results May 21, 2010 May 21, 2010
Hardness, Total (As Caco3) 1915 Water Quality 5 of 5 results May 21, 2010 May 21, 2010
Alkalinity, Total 1927 Water Quality 5 of 5 results May 21, 2010 May 21, 2010
PH, Field Result PHFD Water Quality 5 of 5 results May 21, 2010 May 21, 2010
Gross Beta Particle Activity 4100 Radionuclide 5 of 5 results Jun 22, 2009 Oct 26, 2009
Styrene 2996 Organic Chemical 4 of 360 results Sep 22, 2005 Nov 2, 2017
Calculated Sodium NACA Water Quality 4 of 4 results May 21, 2010 May 21, 2010
Cyanide 1024 Inorganic Chemical 4 of 245 results Sep 15, 2003 Aug 31, 2009
Bromoform 2942 Organic Chemical 3 of 39 results Jun 26, 2008 Sep 17, 2014
Iron 1028 Inorganic Chemical 3 of 5 results May 21, 2010 May 21, 2010
Dichloromethane 2964 Organic Chemical 2 of 360 results Oct 15, 2012 Oct 15, 2012
Combined Uranium 4006 Radionuclide 2 of 102 results Sep 30, 2011 Nov 29, 2011
Magnesium 1031 Inorganic Chemical 2 of 5 results May 21, 2010 May 21, 2010
Monobromoacetic Acid 2453 Organic Chemical 1 of 34 results Jul 23, 2019 Jul 23, 2019
Carbon Tetrachloride 2982 Organic Chemical 1 of 360 results Jul 19, 2004 Jul 19, 2004
Antimony, Total 1074 Inorganic Chemical 1 of 270 results Sep 11, 2003 Sep 11, 2003

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

Choose a date range

The most recent samples, result by result

The table below lists 1–10 of 53 samples, newest first — collected August 19, 2025 to February 23, 2026. The summary above covers all 53.

12 results from the 10 samples listed here: 0 detected, 12 not detected. Across the whole record it is 2,598 of 14,920. 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 City of Gulfport, every result from 1 to 10 of 53 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 23, 2026 13:22
Sampling point
TF124 Treatment Plant T124
Sample type
Routine
Lab sample
NI-260224-036
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 23, 2026 13:22, sampling point TF124 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2026 – Dec 31, 2026
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 23, 2026 13:22, sampling point TF124 Nitrate 1040 EPA method QC10107041C Jan 1, 2026 – Dec 31, 2026
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 23, 2026 13:22, sampling point TF124 Nitrite 1041 EPA method QC10107041C Jan 1, 2026 – Dec 31, 2026
Collected
Sep 29, 2025 14:10
Sampling point
TF108 Treatment Plant T108
Sample type
Routine
Lab sample
CN-250930-021
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 29, 2025 14:10, sampling point TF108 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Sep 29, 2025 13:35
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
CN-250930-022
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 29, 2025 13:35, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 20, 2025 10:30
Sampling point
TF114 Treatment Plant T114
Sample type
Routine
Lab sample
CN-250821-020
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 10:30, sampling point TF114 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 20, 2025 10:08
Sampling point
TF111 Treatment Plant T111
Sample type
Routine
Lab sample
CN-250821-021
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 10:08, sampling point TF111 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 20, 2025 08:16
Sampling point
TF109 Treatment Plant T109
Sample type
Routine
Lab sample
CN-250821-017
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 08:16, sampling point TF109 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 20, 2025 08:47
Sampling point
TF106 Treatment Plant T106
Sample type
Routine
Lab sample
CN-250821-016
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 08:47, sampling point TF106 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 20, 2025 09:18
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
CN-250821-019
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 09:18, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 20, 2025 09:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-250821-018
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 09:40, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 19, 2025 09:15
Sampling point
TF134
Sample type
Routine
Lab sample
CN-250820-030
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 19, 2025 09:15, sampling point TF134 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025

Routine (10).