Chemical and radiological sample results

MS0500007 , Central W/A-North Pearl River

21 of the 56 analytes this system has been tested for have been detected at least once, across 151 samples on record.

The other 35 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 151 samples on record, detections range from October 8, 2003 to May 19, 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 Central W/A-North Pearl River, 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	62 of 62 results	Jul 31, 2007	Sep 12, 2023
Lead 1030	Inorganic Chemical	20 of 62 results	Jul 31, 2007	Sep 12, 2023
TTHM 2950	Organic Chemical	19 of 19 results	Jul 21, 2004	May 19, 2026
Total Haloacetic Acids (Haa5) 2456	Organic Chemical	17 of 19 results	Jun 15, 2010	May 19, 2026
Dichloroacetic Acid 2451	Organic Chemical	14 of 14 results	Oct 2, 2007	May 19, 2026
Chloroform 2941	Organic Chemical	14 of 14 results	Oct 25, 2007	May 19, 2026
Trichloroacetic Acid 2452	Organic Chemical	13 of 14 results	Oct 2, 2007	May 19, 2026
Bromodichloromethane 2943	Organic Chemical	13 of 14 results	Oct 25, 2007	May 19, 2026
Dibromochloromethane 2944	Organic Chemical	12 of 14 results	Aug 12, 2013	May 19, 2026
Barium 1010	Inorganic Chemical	9 of 9 results	Oct 8, 2003	Mar 18, 2025
Gross Alpha, Incl. Radon & U 4002	Radionuclide	5 of 5 results	Dec 13, 2011	Jul 18, 2012
Combined Radium (-226 & -228) 4010	Radionuclide	5 of 5 results	Dec 13, 2011	Jul 18, 2012
Radium-226 4020	Radionuclide	5 of 5 results	Dec 13, 2011	Jul 18, 2012
Chromium 1020	Inorganic Chemical	4 of 9 results	Oct 8, 2003	Oct 3, 2022
Nickel 1036	Inorganic Chemical	4 of 9 results	Mar 8, 2004	Oct 3, 2022
Sodium 1052	Inorganic Chemical	3 of 3 results	Sep 18, 2019	Feb 25, 2025
Fluoride 1025	Inorganic Chemical	2 of 9 results	Oct 8, 2003	Mar 18, 2025
Sulfate 1055	Inorganic Chemical	2 of 2 results	Oct 8, 2003	Mar 8, 2004
Monobromoacetic Acid 2453	Organic Chemical	1 of 14 results	Sep 21, 2020	Sep 21, 2020
Selenium 1045	Inorganic Chemical	1 of 9 results	Apr 4, 2005	Apr 4, 2005
Cadmium 1015	Inorganic Chemical	1 of 9 results	Mar 8, 2004	Mar 8, 2004

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 31–40 of 151 samples, newest first — collected March 29, 2021 to July 26, 2022. The summary above covers all 151.

34 results from the 10 samples listed here: 5 detected, 29 not detected. Across the whole record it is 226 of 639. 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 Central W/A-North Pearl River, every result from 31 to 40 of 151 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 Jul 26, 2022 14:40 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample VO-220727-025 Laboratory MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	1,2,4-Trichlorobenzene 2378 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Cis-1,2-Dichloroethylene 2380 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Xylenes, Total 2955 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Dichloromethane 2964 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	O-Dichlorobenzene 2968 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	P-Dichlorobenzene 2969 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Vinyl Chloride 2976 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	1,1-Dichloroethylene 2977 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Trans-1,2-Dichloroethylene 2979 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	1,2-Dichloroethane 2980 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	1,1,1-Trichloroethane 2981 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Carbon Tetrachloride 2982 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	1,2-Dichloropropane 2983 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Trichloroethylene 2984 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	1,1,2-Trichloroethane 2985 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Tetrachloroethylene 2987 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Chlorobenzene 2989 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Benzene 2990 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Toluene 2991 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Ethylbenzene 2992 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 14:40, sampling point TF080	Styrene 2996 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Collected Jun 6, 2022 15:20 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample HA-220607-002 Laboratory MSDH Lab
3.46 ug/l , sample collected Jun 6, 2022 15:20, sampling point MRT000	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Not recorded
Collected Jun 6, 2022 15:20 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample TH-220607-002 Laboratory MSDH Lab
1.1 ug/l , sample collected Jun 6, 2022 15:20, sampling point MRT000	TTHM 2950 EPA method 524.2	Not recorded
Collected May 16, 2022 14:05 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample CN-220517-034 Laboratory MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 16, 2022 14:05, sampling point TF080	Cyanide 1024 EPA method QC10204001X	Jan 1, 2020 – Dec 31, 2022
Collected Mar 1, 2022 14:21 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample NA-220302-028 Laboratory MSDH Lab
31.7 mg/l , sample collected Mar 1, 2022 14:21, sampling point TF080	Sodium 1052 EPA method 200.7	Not recorded
Collected Mar 1, 2022 14:20 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample NI-220302-029 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 14:20, sampling point TF080	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 14:20, sampling point TF080	Nitrate 1040 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 14:20, sampling point TF080	Nitrite 1041 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Collected Sep 27, 2021 16:10 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample HA-210928-014 Laboratory MSDH Lab
3.05 ug/l , sample collected Sep 27, 2021 16:10, sampling point MRT000	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Not recorded
Collected Sep 27, 2021 16:10 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample TH-210928-014 Laboratory MSDH Lab
7.27 ug/l , sample collected Sep 27, 2021 16:10, sampling point MRT000	TTHM 2950 EPA method 524.2	Not recorded
Collected Jun 7, 2021 13:55 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample RU-210608-030 Laboratory MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 7, 2021 13:55, sampling point TF080	Combined Uranium 4006 EPA method 200.8	Jan 1, 2013 – Dec 31, 2021
Collected Mar 29, 2021 13:49 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample NI-210330-013 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 29, 2021 13:49, sampling point TF080	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 29, 2021 13:49, sampling point TF080	Nitrate 1040 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 29, 2021 13:49, sampling point TF080	Nitrite 1041 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021

Collected
Jul 26, 2022 14:40

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
VO-220727-025

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2017 – Dec 31, 2022
- 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
Jun 6, 2022 15:20

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
HA-220607-002

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  3.46 ug/l
Collected
Jun 6, 2022 15:20

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
TH-220607-002

Laboratory
MSDH Lab

Monitoring period
Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  1.1 ug/l
Collected
May 16, 2022 14:05

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
CN-220517-034

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2020 – Dec 31, 2022
- Cyanide 1024 EPA method QC10204001X
  
  Result
  Not detected below 0.015 mg/l Minimum Reporting Level
Collected
Mar 1, 2022 14:21

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
NA-220302-028

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Sodium 1052 EPA method 200.7
  
  Result
  31.7 mg/l
Collected
Mar 1, 2022 14:20

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
NI-220302-029

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2022 – Dec 31, 2022
- 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
Sep 27, 2021 16:10

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
HA-210928-014

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  3.05 ug/l
Collected
Sep 27, 2021 16:10

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
TH-210928-014

Laboratory
MSDH Lab

Monitoring period
Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  7.27 ug/l
Collected
Jun 7, 2021 13:55

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
RU-210608-030

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2013 – Dec 31, 2021
- Combined Uranium 4006 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Mar 29, 2021 13:49

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
NI-210330-013

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2021
- 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

Routine (10).