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; 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 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

Showing samples collected between September 26, 2024 and September 26, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The table below lists 51–60 of 78 samples, newest first — collected February 25, 2025 to March 12, 2025. The summary above covers all 78.

36 results from the 10 samples listed here: 6 detected, 30 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.

Chemical and radiological sample results for City of Ridgeland, every result from 51 to 60 of 78 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 Mar 12, 2025 10:25 Sampling point TF104 Treatment Plant T104 Sample type Routine Lab sample NI-250312-056 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 12, 2025 10:25, sampling point TF104	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 12, 2025 10:25, sampling point TF104	Nitrate 1040 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 12, 2025 10:25, sampling point TF104	Nitrite 1041 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Collected Mar 12, 2025 11:16 Sampling point TF103 Treatment Plant T103 Sample type Routine Lab sample NI-250312-057 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 12, 2025 11:16, sampling point TF103	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 12, 2025 11:16, sampling point TF103	Nitrate 1040 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 12, 2025 11:16, sampling point TF103	Nitrite 1041 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Collected Mar 12, 2025 10:00 Sampling point TF102 Treatment Plant T102 Sample type Routine Lab sample NI-250312-058 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 12, 2025 10:00, sampling point TF102	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 12, 2025 10:00, sampling point TF102	Nitrate 1040 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 12, 2025 10:00, sampling point TF102	Nitrite 1041 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Collected Mar 4, 2025 08:30 Sampling point TF111 Treatment Facility TF111 Sample type Routine Lab sample VO-250305-004 Laboratory MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	1,2,4-Trichlorobenzene 2378 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Cis-1,2-Dichloroethylene 2380 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Xylenes, Total 2955 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Dichloromethane 2964 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	O-Dichlorobenzene 2968 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	P-Dichlorobenzene 2969 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Vinyl Chloride 2976 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	1,1-Dichloroethylene 2977 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Trans-1,2-Dichloroethylene 2979 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	1,2-Dichloroethane 2980 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	1,1,1-Trichloroethane 2981 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Carbon Tetrachloride 2982 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	1,2-Dichloropropane 2983 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Trichloroethylene 2984 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	1,1,2-Trichloroethane 2985 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Tetrachloroethylene 2987 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Chlorobenzene 2989 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Benzene 2990 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Toluene 2991 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Ethylbenzene 2992 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 4, 2025 08:30, sampling point TF111	Styrene 2996 EPA method 524.2	Jan 1, 2025 – Dec 31, 2025
Collected Feb 25, 2025 11:52 Sampling point TF111 Treatment Facility TF111 Sample type Routine Lab sample NA-250226-015 Laboratory MSDH Lab
92.4 mg/l , sample collected Feb 25, 2025 11:52, sampling point TF111	Sodium 1052 EPA method 200.7	Jan 1, 2023 – Dec 31, 2025
Collected Feb 25, 2025 10:04 Sampling point TF107 Treatment Plant T107 Sample type Routine Lab sample NA-250226-014 Laboratory MSDH Lab
139 mg/l , sample collected Feb 25, 2025 10:04, sampling point TF107	Sodium 1052 EPA method 200.7	Jan 1, 2023 – Dec 31, 2025
Collected Feb 25, 2025 10:58 Sampling point TF106 Treatment Plant T106 Sample type Routine Lab sample NA-250226-013 Laboratory MSDH Lab
89.1 mg/l , sample collected Feb 25, 2025 10:58, sampling point TF106	Sodium 1052 EPA method 200.7	Jan 1, 2023 – Dec 31, 2025
Collected Feb 25, 2025 08:15 Sampling point TF105 Treatment Plant T105 Sample type Routine Lab sample NA-250226-012 Laboratory MSDH Lab
85.2 mg/l , sample collected Feb 25, 2025 08:15, sampling point TF105	Sodium 1052 EPA method 200.7	Jan 1, 2023 – Dec 31, 2025
Collected Feb 25, 2025 08:52 Sampling point TF104 Treatment Plant T104 Sample type Routine Lab sample NA-250226-011 Laboratory MSDH Lab
143 mg/l , sample collected Feb 25, 2025 08:52, sampling point TF104	Sodium 1052 EPA method 200.7	Jan 1, 2023 – Dec 31, 2025
Collected Feb 25, 2025 09:15 Sampling point TF103 Treatment Plant T103 Sample type Routine Lab sample NA-250226-010 Laboratory MSDH Lab
142 mg/l , sample collected Feb 25, 2025 09:15, sampling point TF103	Sodium 1052 EPA method 200.7	Jan 1, 2023 – Dec 31, 2025

Collected
Mar 12, 2025 10:25

Sampling point
TF104 Treatment Plant T104

Sample type
Routine

Lab sample
NI-250312-056

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Mar 12, 2025 11:16

Sampling point
TF103 Treatment Plant T103

Sample type
Routine

Lab sample
NI-250312-057

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Mar 12, 2025 10:00

Sampling point
TF102 Treatment Plant T102

Sample type
Routine

Lab sample
NI-250312-058

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Mar 4, 2025 08:30

Sampling point
TF111 Treatment Facility TF111

Sample type
Routine

Lab sample
VO-250305-004

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- 1,2,4-Trichlorobenzene 2378 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Cis-1,2-Dichloroethylene 2380 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Xylenes, Total 2955 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Dichloromethane 2964 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- O-Dichlorobenzene 2968 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- P-Dichlorobenzene 2969 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Vinyl Chloride 2976 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1-Dichloroethylene 2977 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trans-1,2-Dichloroethylene 2979 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloroethane 2980 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,1-Trichloroethane 2981 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Carbon Tetrachloride 2982 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloropropane 2983 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trichloroethylene 2984 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,2-Trichloroethane 2985 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Tetrachloroethylene 2987 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Chlorobenzene 2989 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Benzene 2990 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Toluene 2991 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Ethylbenzene 2992 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Styrene 2996 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Feb 25, 2025 11:52

Sampling point
TF111 Treatment Facility TF111

Sample type
Routine

Lab sample
NA-250226-015

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2025
- Sodium 1052 EPA method 200.7
  
  Result
  92.4 mg/l
Collected
Feb 25, 2025 10:04

Sampling point
TF107 Treatment Plant T107

Sample type
Routine

Lab sample
NA-250226-014

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2025
- Sodium 1052 EPA method 200.7
  
  Result
  139 mg/l
Collected
Feb 25, 2025 10:58

Sampling point
TF106 Treatment Plant T106

Sample type
Routine

Lab sample
NA-250226-013

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2025
- Sodium 1052 EPA method 200.7
  
  Result
  89.1 mg/l
Collected
Feb 25, 2025 08:15

Sampling point
TF105 Treatment Plant T105

Sample type
Routine

Lab sample
NA-250226-012

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2025
- Sodium 1052 EPA method 200.7
  
  Result
  85.2 mg/l
Collected
Feb 25, 2025 08:52

Sampling point
TF104 Treatment Plant T104

Sample type
Routine

Lab sample
NA-250226-011

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2025
- Sodium 1052 EPA method 200.7
  
  Result
  143 mg/l
Collected
Feb 25, 2025 09:15

Sampling point
TF103 Treatment Plant T103

Sample type
Routine

Lab sample
NA-250226-010

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2025
- Sodium 1052 EPA method 200.7
  
  Result
  142 mg/l

Routine (10).