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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 1,278 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 1,278 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 33 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 34 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 15 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 33 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 961–970 of 1,278 samples, newest first — collected February 17, 2009 to June 1, 2009. The summary above covers all 1,278.

80 results from the 10 samples listed here: 10 detected, 70 not detected. Across the whole record it is 1,945 of 6,581. 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 Ridgeland, every result from 961 to 970 of 1,278 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
Jun 1, 2009
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
090601-006NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Jun 1, 2009, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Jun 1, 2009, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 1, 2009, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Jun 1, 2009
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
090601-005NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Jun 1, 2009, sampling point TF105 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Jun 1, 2009, sampling point TF105 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 1, 2009, sampling point TF105 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Jun 1, 2009
Sampling point
TF109 Treatment Plant T109
Sample type
Routine
Lab sample
090601-004NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Jun 1, 2009, sampling point TF109 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Jun 1, 2009, sampling point TF109 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 1, 2009, sampling point TF109 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
May 18, 2009
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
090519-001HA
Laboratory
MSDH Lab
0.002 mg/l , sample collected May 18, 2009, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.021 mg/l , sample collected May 18, 2009, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.023 mg/l , sample collected May 18, 2009, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 18, 2009, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 18, 2009, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.04 mg/l , sample collected May 18, 2009, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Apr 1, 2009 – Jun 30, 2009
Collected
May 18, 2009
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
090519-001TH
Laboratory
MSDH Lab
64.3 ug/l , sample collected May 18, 2009, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 18, 2009, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
4.95 ug/l , sample collected May 18, 2009, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 18, 2009, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
69.25 ug/l , sample collected May 18, 2009, sampling point MRT000 TTHM 2950 EPA method 524.2 Apr 1, 2009 – Jun 30, 2009
Collected
May 12, 2009
Sampling point
TF109 Treatment Plant T109
Sample type
Routine
Lab sample
090513-004VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Xylenes, Total 2955 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Dichloromethane 2964 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 O-Dichlorobenzene 2968 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 P-Dichlorobenzene 2969 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Vinyl Chloride 2976 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 1,1-Dichloroethylene 2977 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 1,2-Dichloroethane 2980 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 1,1,1-Trichloroethane 2981 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Carbon Tetrachloride 2982 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 1,2-Dichloropropane 2983 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Trichloroethylene 2984 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 1,1,2-Trichloroethane 2985 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Tetrachloroethylene 2987 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Chlorobenzene 2989 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Benzene 2990 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Toluene 2991 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Ethylbenzene 2992 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 12, 2009, sampling point TF109 Styrene 2996 EPA method 524.2 Not recorded
Collected
Mar 2, 2009
Sampling point
TF109 Treatment Plant T109
Sample type
Routine
Lab sample
090303-010VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Xylenes, Total 2955 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Dichloromethane 2964 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 O-Dichlorobenzene 2968 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 P-Dichlorobenzene 2969 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Vinyl Chloride 2976 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 1,1-Dichloroethylene 2977 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 1,2-Dichloroethane 2980 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 1,1,1-Trichloroethane 2981 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Carbon Tetrachloride 2982 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 1,2-Dichloropropane 2983 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Trichloroethylene 2984 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 1,1,2-Trichloroethane 2985 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Tetrachloroethylene 2987 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Chlorobenzene 2989 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Benzene 2990 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Toluene 2991 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Ethylbenzene 2992 EPA method 524.2 Not recorded
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Mar 2, 2009, sampling point TF109 Styrene 2996 EPA method 524.2 Not recorded
Collected
Mar 2, 2009
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
090303-001HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Mar 2, 2009, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.011 mg/l , sample collected Mar 2, 2009, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.026 mg/l , sample collected Mar 2, 2009, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Mar 2, 2009, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Mar 2, 2009, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.03 mg/l , sample collected Mar 2, 2009, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2009 – Mar 31, 2009
Collected
Feb 17, 2009
Sampling point
TF107 Treatment Plant T107
Sample type
Routine
Lab sample
225792015
Laboratory
Gel Laboratories
Not detected below 3 pci/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF107 Gross Alpha, Excl. Radon & U 4000 Jan 1, 2009 – Mar 31, 2009
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF107 Combined Uranium 4006 EPA method 200.8 Jan 1, 2009 – Mar 31, 2009
Not detected below 1 pci/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF107 Combined Radium (-226 & -228) 4010 Jan 1, 2009 – Mar 31, 2009
Not detected below 1 pci/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF107 Radium-226 4020 EPA method 903.1 Jan 1, 2009 – Mar 31, 2009
Not detected below 1 pci/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF107 Radium-228 4030 EPA method 904 Jan 1, 2009 – Mar 31, 2009
Not detected below 3 pci/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF107 Gross Alpha Particle Activity 4109 EPA method 900 Jan 1, 2009 – Mar 31, 2009
Collected
Feb 17, 2009
Sampling point
TF106 Treatment Plant T106
Sample type
Routine
Lab sample
225792014
Laboratory
Gel Laboratories
Not detected below 3 pci/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF106 Gross Alpha, Excl. Radon & U 4000 Jan 1, 2009 – Mar 31, 2009
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF106 Combined Uranium 4006 EPA method 200.8 Jan 1, 2009 – Mar 31, 2009
Not detected below 1 pci/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF106 Combined Radium (-226 & -228) 4010 Jan 1, 2009 – Mar 31, 2009
Not detected below 1 pci/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF106 Radium-226 4020 EPA method 903.1 Jan 1, 2009 – Mar 31, 2009
Not detected below 1 pci/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF106 Radium-228 4030 EPA method 904 Jan 1, 2009 – Mar 31, 2009
Not detected below 3 pci/l Minimum Reporting Level , sample collected Feb 17, 2009, sampling point TF106 Gross Alpha Particle Activity 4109 EPA method 900 Jan 1, 2009 – Mar 31, 2009

Routine (10).