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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

MS0240001 , City of Biloxi

51 of the 75 analytes this system has been tested for have been detected at least once, across 1,824 samples on record.

The other 24 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 1,824 samples on record, detections range from August 11, 1992 to June 25, 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 City of Biloxi, 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 616 of 692 results Aug 11, 1992 Jul 11, 2024
Lead 1030 Inorganic Chemical 502 of 692 results Aug 11, 1992 Jul 11, 2024
Fluoride 1025 Inorganic Chemical 148 of 148 results Jun 25, 2002 Jun 25, 2026
Barium 1010 Inorganic Chemical 144 of 145 results Jun 25, 2002 Feb 10, 2025
TTHM 2950 Organic Chemical 121 of 121 results Mar 8, 2004 Apr 28, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 113 of 119 results Aug 2, 2004 Apr 28, 2026
Chloroform 2941 Organic Chemical 103 of 103 results Jul 25, 2006 Apr 28, 2026
Bromodichloromethane 2943 Organic Chemical 99 of 103 results Jul 25, 2006 Apr 28, 2026
Dichloroacetic Acid 2451 Organic Chemical 95 of 97 results Aug 26, 2007 Apr 28, 2026
Trichloroacetic Acid 2452 Organic Chemical 95 of 97 results Aug 26, 2007 Apr 28, 2026
Dibromochloromethane 2944 Organic Chemical 88 of 103 results Jul 25, 2006 Apr 28, 2026
Chromium 1020 Inorganic Chemical 75 of 145 results Jun 25, 2002 Feb 10, 2025
Nickel 1036 Inorganic Chemical 53 of 144 results Jun 25, 2002 Feb 10, 2025
Dibromoacetic Acid 2454 Organic Chemical 51 of 97 results Dec 3, 2007 Apr 28, 2026
Sodium 1052 Inorganic Chemical 39 of 39 results Jan 22, 2010 Jun 25, 2026
Bromoform 2942 Organic Chemical 34 of 103 results Dec 3, 2007 Apr 28, 2026
Selenium 1045 Inorganic Chemical 33 of 145 results Feb 4, 2004 Apr 21, 2014
Sulfate 1055 Inorganic Chemical 30 of 30 results Jun 25, 2002 Oct 18, 2012
Arsenic 1005 Inorganic Chemical 20 of 145 results Mar 7, 2005 Feb 10, 2025
Monochloroacetic Acid 2450 Organic Chemical 18 of 97 results May 5, 2008 Oct 26, 2017
Combined Radium (-226 & -228) 4010 Radionuclide 16 of 57 results Feb 18, 2009 Nov 14, 2019
Radium-226 4020 Radionuclide 12 of 56 results Jun 25, 2009 Nov 14, 2019
Radium-228 4030 Radionuclide 12 of 56 results Feb 18, 2009 Nov 14, 2019
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 23 results Nov 20, 2013 Nov 14, 2019
Cyanide 1024 Inorganic Chemical 8 of 136 results Sep 19, 2011 Jun 16, 2025
Cadmium 1015 Inorganic Chemical 7 of 145 results Mar 7, 2005 Mar 7, 2005
Carbon Tetrachloride 2982 Organic Chemical 5 of 177 results Jun 4, 2007 Apr 12, 2021
Gross Alpha Particle Activity 4109 Radionuclide 3 of 33 results Jun 25, 2009 Mar 12, 2014
Calcium 1016 Inorganic Chemical 3 of 3 results Jan 22, 2010 Oct 18, 2012
Chloride 1017 Inorganic Chemical 3 of 3 results Jan 22, 2010 Oct 18, 2012
Manganese 1032 Inorganic Chemical 3 of 3 results Jan 22, 2010 Oct 18, 2012
Potassium 1042 Inorganic Chemical 3 of 3 results Jan 22, 2010 Oct 18, 2012
Residue, Total, Filterable 1057 Water Quality 3 of 3 results Jan 22, 2010 Oct 18, 2012
Alkalinity, Caco3 Stability 1067 Water Quality 3 of 3 results Jan 22, 2010 Oct 18, 2012
Carbon Dioxide 1901 Water Quality 3 of 3 results Jan 22, 2010 Oct 18, 2012
Color 1905 Water Quality 3 of 3 results Jan 22, 2010 Oct 18, 2012
Hardness, Total (As Caco3) 1915 Water Quality 3 of 3 results Jan 22, 2010 Oct 18, 2012
Alkalinity, Total 1927 Water Quality 3 of 3 results Jan 22, 2010 Oct 18, 2012
Calculated Sodium NACA Water Quality 3 of 3 results Jan 22, 2010 Oct 18, 2012
PH, Field Result PHFD Water Quality 3 of 3 results Jan 22, 2010 Oct 18, 2012
Dichloromethane 2964 Organic Chemical 3 of 177 results Feb 21, 2006 Feb 6, 2007
Iron 1028 Inorganic Chemical 2 of 3 results Jan 22, 2010 Oct 18, 2012
Gross Alpha, Excl. Radon & U 4000 Radionuclide 2 of 30 results Jun 25, 2009 Oct 26, 2009
Gross Beta Particle Activity 4100 Radionuclide 2 of 2 results Jun 25, 2009 Oct 26, 2009
Antimony, Total 1074 Inorganic Chemical 1 of 145 results Apr 25, 2022 Apr 25, 2022
Thallium, Total 1085 Inorganic Chemical 1 of 145 results Apr 22, 2020 Apr 22, 2020
Monobromoacetic Acid 2453 Organic Chemical 1 of 97 results Oct 27, 2014 Oct 27, 2014
Magnesium 1031 Inorganic Chemical 1 of 3 results Jan 22, 2010 Jan 22, 2010
Nitrite 1041 Inorganic Chemical 1 of 302 results Jun 19, 2006 Jun 19, 2006
Nitrate 1040 Inorganic Chemical 1 of 302 results May 12, 2004 May 12, 2004
Xylenes, Total 2955 Organic Chemical 1 of 177 results Aug 18, 2003 Aug 18, 2003

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 101–110 of 1,824 samples, newest first — collected May 15, 2023 to January 30, 2024. The summary above covers all 1,824.

50 results from the 10 samples listed here: 16 detected, 34 not detected. Across the whole record it is 2,602 of 9,309. 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 1 sampling point 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 City of Biloxi, every result from 101 to 110 of 1,824 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
Jan 30, 2024 12:50
Sampling point
TF110 Treatment Plant T110
Sample type
Routine
Lab sample
NA-240131-004
Laboratory
MSDH Lab
191 mg/l , sample collected Jan 30, 2024 12:50, sampling point TF110 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Jan 30, 2024 13:13
Sampling point
TF106 Treatment Plant T106
Sample type
Routine
Lab sample
NA-240131-003
Laboratory
MSDH Lab
71.2 mg/l , sample collected Jan 30, 2024 13:13, sampling point TF106 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Jan 30, 2024 13:50
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
NA-240131-002
Laboratory
MSDH Lab
102 mg/l , sample collected Jan 30, 2024 13:50, sampling point TF105 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Jan 30, 2024 13:02
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
NA-240131-001
Laboratory
MSDH Lab
83.7 mg/l , sample collected Jan 30, 2024 13:02, sampling point TF104 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Oct 23, 2023 13:05
Sampling point
TF116 Treatment Plant T116
Sample type
Routine
Lab sample
IN-231024-019
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:05, sampling point TF116 Arsenic 1005 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.0053 mg/l , sample collected Oct 23, 2023 13:05, sampling point TF116 Barium 1010 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:05, sampling point TF116 Cadmium 1015 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:05, sampling point TF116 Chromium 1020 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.332 mg/l , sample collected Oct 23, 2023 13:05, sampling point TF116 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2021 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:05, sampling point TF116 Mercury 1035 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:05, sampling point TF116 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:05, sampling point TF116 Selenium 1045 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:05, sampling point TF116 Antimony, Total 1074 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:05, sampling point TF116 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:05, sampling point TF116 Thallium, Total 1085 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Oct 23, 2023 12:30
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
IN-231024-014
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 12:30, sampling point TF105 Arsenic 1005 EPA method 200.8 Oct 1, 2023 – Dec 31, 2023
0.0058 mg/l , sample collected Oct 23, 2023 12:30, sampling point TF105 Barium 1010 EPA method 200.8 Oct 1, 2023 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 12:30, sampling point TF105 Cadmium 1015 EPA method 200.8 Oct 1, 2023 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 12:30, sampling point TF105 Chromium 1020 EPA method 200.8 Oct 1, 2023 – Dec 31, 2023
0.4 mg/l , sample collected Oct 23, 2023 12:30, sampling point TF105 Fluoride 1025 EPA method QC 10-109-12-2-A Oct 1, 2023 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 12:30, sampling point TF105 Mercury 1035 EPA method 200.8 Oct 1, 2023 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 12:30, sampling point TF105 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 12:30, sampling point TF105 Selenium 1045 EPA method 200.8 Oct 1, 2023 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 12:30, sampling point TF105 Antimony, Total 1074 EPA method 200.8 Oct 1, 2023 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 12:30, sampling point TF105 Beryllium, Total 1075 EPA method 200.8 Oct 1, 2023 – Dec 31, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 12:30, sampling point TF105 Thallium, Total 1085 EPA method 200.8 Oct 1, 2023 – Dec 31, 2023
Collected
Jul 12, 2023 12:00
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
IN-230713-005
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 12, 2023 12:00, sampling point TF105 Arsenic 1005 EPA method 200.8 Jul 1, 2023 – Sep 30, 2023
0.0057 mg/l , sample collected Jul 12, 2023 12:00, sampling point TF105 Barium 1010 EPA method 200.8 Jul 1, 2023 – Sep 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 12, 2023 12:00, sampling point TF105 Cadmium 1015 EPA method 200.8 Jul 1, 2023 – Sep 30, 2023
0.0032 mg/l , sample collected Jul 12, 2023 12:00, sampling point TF105 Chromium 1020 EPA method 200.8 Jul 1, 2023 – Sep 30, 2023
0.387 mg/l , sample collected Jul 12, 2023 12:00, sampling point TF105 Fluoride 1025 EPA method QC 10-109-12-2-A Jul 1, 2023 – Sep 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 12, 2023 12:00, sampling point TF105 Mercury 1035 EPA method 200.8 Jul 1, 2023 – Sep 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 12, 2023 12:00, sampling point TF105 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jul 12, 2023 12:00, sampling point TF105 Selenium 1045 EPA method 200.8 Jul 1, 2023 – Sep 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 12, 2023 12:00, sampling point TF105 Antimony, Total 1074 EPA method 200.8 Jul 1, 2023 – Sep 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 12, 2023 12:00, sampling point TF105 Beryllium, Total 1075 EPA method 200.8 Jul 1, 2023 – Sep 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 12, 2023 12:00, sampling point TF105 Thallium, Total 1085 EPA method 200.8 Jul 1, 2023 – Sep 30, 2023
Collected
May 15, 2023 11:35
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
IN-230516-016
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2023 11:35, sampling point TF105 Arsenic 1005 EPA method 200.8 Apr 1, 2023 – Jun 30, 2023
0.0054 mg/l , sample collected May 15, 2023 11:35, sampling point TF105 Barium 1010 EPA method 200.8 Apr 1, 2023 – Jun 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2023 11:35, sampling point TF105 Cadmium 1015 EPA method 200.8 Apr 1, 2023 – Jun 30, 2023
0.0015 mg/l , sample collected May 15, 2023 11:35, sampling point TF105 Chromium 1020 EPA method 200.8 Apr 1, 2023 – Jun 30, 2023
0.43 mg/l , sample collected May 15, 2023 11:35, sampling point TF105 Fluoride 1025 EPA method QC 10-109-12-2-A Apr 1, 2023 – Jun 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2023 11:35, sampling point TF105 Mercury 1035 EPA method 200.8 Apr 1, 2023 – Jun 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2023 11:35, sampling point TF105 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 15, 2023 11:35, sampling point TF105 Selenium 1045 EPA method 200.8 Apr 1, 2023 – Jun 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2023 11:35, sampling point TF105 Antimony, Total 1074 EPA method 200.8 Apr 1, 2023 – Jun 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2023 11:35, sampling point TF105 Beryllium, Total 1075 EPA method 200.8 Apr 1, 2023 – Jun 30, 2023
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2023 11:35, sampling point TF105 Thallium, Total 1085 EPA method 200.8 Apr 1, 2023 – Jun 30, 2023
Collected
May 15, 2023 13:30
Sampling point
SM3 Location withheld
Sample type
Routine
Lab sample
TH-230516-005
Laboratory
MSDH Lab
34.7 ug/l , sample collected May 15, 2023 13:30, sampling point SM3 TTHM 2950 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Collected
May 15, 2023 13:30
Sampling point
SM3 Location withheld
Sample type
Routine
Lab sample
HA-230516-005
Laboratory
MSDH Lab
10.1 ug/l , sample collected May 15, 2023 13:30, sampling point SM3 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Dec 31, 2023

Routine (10).