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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

MS0450013 , City of Ridgeland

42 of the 66 analytes this system has been tested for have been detected at least once, across 1,276 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 1,276 samples on record, detections range from July 16, 2002 to December 2, 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 City of Ridgeland, 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
TTHM 2950 Organic Chemical 246 of 246 results Mar 8, 2004 Oct 7, 2025
Copper, Free 1022 Inorganic Chemical 242 of 242 results Jun 17, 2004 Aug 29, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 239 of 242 results Mar 8, 2004 Oct 7, 2025
Chloroform 2941 Organic Chemical 152 of 153 results Aug 1, 2006 Dec 2, 2020
Bromodichloromethane 2943 Organic Chemical 152 of 153 results Aug 1, 2006 Dec 2, 2020
Dichloroacetic Acid 2451 Organic Chemical 141 of 142 results Sep 24, 2007 Dec 2, 2020
Trichloroacetic Acid 2452 Organic Chemical 141 of 142 results Sep 24, 2007 Dec 2, 2020
Lead 1030 Inorganic Chemical 135 of 242 results Jun 17, 2004 Aug 29, 2024
Fluoride 1025 Inorganic Chemical 81 of 81 results Jul 16, 2002 Mar 12, 2025
Barium 1010 Inorganic Chemical 74 of 74 results Jul 16, 2002 Mar 12, 2025
Chromium 1020 Inorganic Chemical 48 of 74 results Jul 16, 2002 Feb 5, 2024
Monochloroacetic Acid 2450 Organic Chemical 47 of 142 results Dec 17, 2007 Sep 1, 2020
Dibromochloromethane 2944 Organic Chemical 32 of 153 results Aug 1, 2006 Sep 1, 2020
Sodium 1052 Inorganic Chemical 31 of 31 results Sep 19, 2019 Dec 2, 2025
Sulfate 1055 Inorganic Chemical 21 of 21 results Jul 16, 2002 Oct 19, 2021
Dibromoacetic Acid 2454 Organic Chemical 20 of 142 results Mar 17, 2008 Sep 1, 2020
Bromoform 2942 Organic Chemical 18 of 153 results Sep 24, 2007 Sep 1, 2020
Selenium 1045 Inorganic Chemical 18 of 74 results Oct 6, 2003 Jul 9, 2012
Monobromoacetic Acid 2453 Organic Chemical 15 of 142 results Nov 3, 2008 Dec 2, 2020
Radium-226 4020 Radionuclide 8 of 31 results Jun 23, 2009 Sep 3, 2019
Nickel 1036 Inorganic Chemical 7 of 74 results Nov 24, 2003 Sep 26, 2022
Calcium 1016 Inorganic Chemical 7 of 7 results Oct 19, 2021 Oct 19, 2021
Chloride 1017 Inorganic Chemical 7 of 7 results Oct 19, 2021 Oct 19, 2021
Conductivity @ 25 C Umhos/CM 1064 Water Quality 7 of 7 results Oct 19, 2021 Oct 19, 2021
Alkalinity, Total 1927 Water Quality 7 of 7 results Oct 19, 2021 Oct 19, 2021
Combined Radium (-226 & -228) 4010 Radionuclide 7 of 32 results Feb 17, 2009 Sep 3, 2019
Arsenic 1005 Inorganic Chemical 7 of 74 results Mar 8, 2004 Mar 31, 2014
Gross Alpha Particle Activity 4109 Radionuclide 6 of 18 results Jun 23, 2009 Jan 14, 2013
Color 1905 Water Quality 5 of 7 results Oct 19, 2021 Oct 19, 2021
Cyanide 1024 Inorganic Chemical 3 of 80 results Jan 20, 2010 May 6, 2024
Gross Alpha, Incl. Radon & U 4002 Radionuclide 3 of 13 results Aug 1, 2018 Sep 3, 2019
Xylenes, Total 2955 Organic Chemical 3 of 124 results Feb 22, 2011 Jul 15, 2019
Radium-228 4030 Radionuclide 3 of 31 results Feb 17, 2009 Oct 26, 2009
Carbon Tetrachloride 2982 Organic Chemical 2 of 124 results Feb 5, 2018 Nov 4, 2019
Gross Alpha, Excl. Radon & U 4000 Radionuclide 2 of 14 results Jun 23, 2009 Oct 26, 2009
Cadmium 1015 Inorganic Chemical 2 of 74 results Nov 15, 2004 Dec 12, 2005
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 171 results Feb 25, 2019 Feb 25, 2019
Nitrate 1040 Inorganic Chemical 1 of 171 results Feb 25, 2019 Feb 25, 2019
Gross Beta Particle Activity 4100 Radionuclide 1 of 1 result Jun 23, 2009 Jun 23, 2009
Toluene 2991 Organic Chemical 1 of 124 results Jun 9, 2005 Jun 9, 2005
Dichloromethane 2964 Organic Chemical 1 of 124 results Aug 19, 2004 Aug 19, 2004
Mercury 1035 Inorganic Chemical 1 of 72 results Oct 13, 2003 Oct 13, 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 201–210 of 1,276 samples, newest first — collected July 27, 2022 to November 14, 2022. The summary above covers all 1,276.

70 results from the 10 samples listed here: 16 detected, 54 not detected. Across the whole record it is 1,945 of 6,573. 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 Ridgeland, every result from 201 to 210 of 1,276 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
Nov 14, 2022 10:50
Sampling point
SM1 Near School St Well
Sample type
Routine
Lab sample
TH-221115-001
Laboratory
MSDH Lab
28.6 ug/l , sample collected Nov 14, 2022 10:50, sampling point SM1 TTHM 2950 EPA method 524.2 Oct 1, 2022 – Dec 31, 2022
Collected
Sep 26, 2022 13:00
Sampling point
TF106 Treatment Plant T106
Sample type
Routine
Lab sample
IN-220927-006
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 13:00, sampling point TF106 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0026 mg/l , sample collected Sep 26, 2022 13:00, sampling point TF106 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 13:00, sampling point TF106 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 13:00, sampling point TF106 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.193 mg/l , sample collected Sep 26, 2022 13:00, sampling point TF106 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 13:00, sampling point TF106 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 13:00, sampling point TF106 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 13:00, sampling point TF106 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 13:00, sampling point TF106 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 13:00, sampling point TF106 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 13:00, sampling point TF106 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Sep 26, 2022 07:45
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
IN-220927-005
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 07:45, sampling point TF105 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0017 mg/l , sample collected Sep 26, 2022 07:45, sampling point TF105 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 07:45, sampling point TF105 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 07:45, sampling point TF105 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.147 mg/l , sample collected Sep 26, 2022 07:45, sampling point TF105 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 07:45, sampling point TF105 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 07:45, sampling point TF105 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 07:45, sampling point TF105 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 07:45, sampling point TF105 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 07:45, sampling point TF105 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 07:45, sampling point TF105 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Sep 26, 2022 08:50
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
IN-220927-004
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:50, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0038 mg/l , sample collected Sep 26, 2022 08:50, sampling point TF104 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:50, sampling point TF104 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:50, sampling point TF104 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.279 mg/l , sample collected Sep 26, 2022 08:50, sampling point TF104 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:50, sampling point TF104 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:50, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:50, sampling point TF104 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:50, sampling point TF104 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:50, sampling point TF104 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:50, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Sep 26, 2022 09:35
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
IN-220927-003
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 09:35, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0055 mg/l , sample collected Sep 26, 2022 09:35, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 09:35, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 09:35, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.195 mg/l , sample collected Sep 26, 2022 09:35, sampling point TF103 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 09:35, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0006 mg/l , sample collected Sep 26, 2022 09:35, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 09:35, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 09:35, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 09:35, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 09:35, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Sep 26, 2022 08:20
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-220927-002
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:20, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0036 mg/l , sample collected Sep 26, 2022 08:20, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:20, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:20, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.106 mg/l , sample collected Sep 26, 2022 08:20, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:20, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:20, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:20, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:20, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:20, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 08:20, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Sep 26, 2022 10:08
Sampling point
TF107 Treatment Plant T107
Sample type
Routine
Lab sample
IN-220927-001
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 10:08, sampling point TF107 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0045 mg/l , sample collected Sep 26, 2022 10:08, sampling point TF107 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 10:08, sampling point TF107 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 10:08, sampling point TF107 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.188 mg/l , sample collected Sep 26, 2022 10:08, sampling point TF107 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 10:08, sampling point TF107 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 10:08, sampling point TF107 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 10:08, sampling point TF107 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 10:08, sampling point TF107 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 10:08, sampling point TF107 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 10:08, sampling point TF107 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Aug 22, 2022 10:35
Sampling point
TF111 Treatment Facility TF111
Sample type
Routine
Lab sample
CN-220822-001
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 22, 2022 10:35, sampling point TF111 Cyanide 1024 EPA method QC10204001X Jul 1, 2022 – Sep 30, 2022
Collected
Jul 27, 2022 10:22
Sampling point
SM4 Location withheld
Sample type
Routine
Lab sample
TH-220728-007
Laboratory
MSDH Lab
16.6 ug/l , sample collected Jul 27, 2022 10:22, sampling point SM4 TTHM 2950 EPA method 524.2 Jul 1, 2022 – Sep 30, 2022
Collected
Jul 27, 2022 08:58
Sampling point
SM3 Fox Hollow
Sample type
Routine
Lab sample
TH-220728-006
Laboratory
MSDH Lab
33.1 ug/l , sample collected Jul 27, 2022 08:58, sampling point SM3 TTHM 2950 EPA method 524.2 Jul 1, 2022 – Sep 30, 2022

Routine (10).