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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

MS0410023 , Natchez Trace Parkway

38 of the 67 analytes this system has been tested for have been detected at least once, across 216 samples on record.

The other 29 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 216 samples on record, detections range from October 1, 2003 to March 10, 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 Natchez Trace Parkway, 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 45 of 45 results Aug 4, 2004 Aug 29, 2023
Barium 1010 Inorganic Chemical 22 of 22 results Oct 1, 2003 Mar 10, 2025
Fluoride 1025 Inorganic Chemical 22 of 24 results Oct 1, 2003 Mar 10, 2025
Nickel 1036 Inorganic Chemical 17 of 22 results Oct 1, 2003 Mar 10, 2025
Lead 1030 Inorganic Chemical 16 of 45 results Aug 4, 2004 Aug 29, 2023
Chromium 1020 Inorganic Chemical 15 of 22 results Oct 1, 2003 Sep 26, 2022
Xylenes, Total 2955 Organic Chemical 14 of 58 results Aug 9, 2004 Mar 3, 2025
Arsenic 1005 Inorganic Chemical 8 of 22 results May 10, 2010 Mar 10, 2025
TTHM 2950 Organic Chemical 6 of 8 results Sep 17, 2007 Feb 10, 2025
Sulfate 1055 Inorganic Chemical 6 of 6 results Oct 1, 2003 Apr 14, 2017
Selenium 1045 Inorganic Chemical 6 of 22 results Oct 1, 2003 Jul 9, 2012
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 5 of 8 results Sep 17, 2007 Dec 5, 2022
Dichloromethane 2964 Organic Chemical 4 of 58 results Aug 9, 2004 Jun 21, 2022
Sodium 1052 Inorganic Chemical 4 of 4 results Apr 14, 2017 Feb 14, 2022
Bromoform 2942 Organic Chemical 4 of 5 results Sep 17, 2007 Sep 10, 2018
Ethylbenzene 2992 Organic Chemical 3 of 58 results Aug 9, 2004 Oct 29, 2013
Dichloroacetic Acid 2451 Organic Chemical 2 of 4 results Jul 24, 2013 Sep 10, 2018
Dibromoacetic Acid 2454 Organic Chemical 2 of 4 results Jul 24, 2013 Sep 10, 2018
Bromodichloromethane 2943 Organic Chemical 2 of 5 results Jul 24, 2013 Sep 10, 2018
Dibromochloromethane 2944 Organic Chemical 2 of 5 results Jul 24, 2013 Sep 10, 2018
Calcium 1016 Inorganic Chemical 2 of 2 results Apr 14, 2017 Apr 14, 2017
Chloride 1017 Inorganic Chemical 2 of 2 results Apr 14, 2017 Apr 14, 2017
Iron 1028 Inorganic Chemical 2 of 2 results Apr 14, 2017 Apr 14, 2017
Magnesium 1031 Inorganic Chemical 2 of 2 results Apr 14, 2017 Apr 14, 2017
Manganese 1032 Inorganic Chemical 2 of 2 results Apr 14, 2017 Apr 14, 2017
Potassium 1042 Inorganic Chemical 2 of 2 results Apr 14, 2017 Apr 14, 2017
Residue, Total, Filterable 1057 Water Quality 2 of 2 results Apr 14, 2017 Apr 14, 2017
Carbon Dioxide 1901 Water Quality 2 of 2 results Apr 14, 2017 Apr 14, 2017
Color 1905 Water Quality 2 of 2 results Apr 14, 2017 Apr 14, 2017
Hardness, Total (As Caco3) 1915 Water Quality 2 of 2 results Apr 14, 2017 Apr 14, 2017
Alkalinity, Total 1927 Water Quality 2 of 2 results Apr 14, 2017 Apr 14, 2017
Iron, Field Result FEFD Inorganic Chemical 2 of 2 results Apr 14, 2017 Apr 14, 2017
Calculated Sodium NACA Water Quality 2 of 2 results Apr 14, 2017 Apr 14, 2017
PH, Field Result PHFD Water Quality 2 of 2 results Apr 14, 2017 Apr 14, 2017
1,2-Dichloroethane 2980 Organic Chemical 2 of 58 results Mar 7, 2016 Mar 14, 2017
Monobromoacetic Acid 2453 Organic Chemical 1 of 4 results Sep 10, 2018 Sep 10, 2018
Carbon Tetrachloride 2982 Organic Chemical 1 of 58 results Mar 14, 2017 Mar 14, 2017
Cadmium 1015 Inorganic Chemical 1 of 22 results Feb 27, 2006 Feb 27, 2006

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 11–20 of 216 samples, newest first — collected December 5, 2022 to March 26, 2024. The summary above covers all 216.

41 results from the 10 samples listed here: 9 detected, 32 not detected. Across the whole record it is 238 of 1,809. 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 6 sampling points 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 Natchez Trace Parkway, every result from 11 to 20 of 216 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 26, 2024 20:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-240327-048
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 26, 2024 20:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 26, 2024 20:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 26, 2024 20:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Aug 29, 2023 06:00
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-230830-037
Laboratory
MSDH Lab
0.0077 mg/l , sample collected Aug 29, 2023 06:00, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
1.1 ug/l , sample collected Aug 29, 2023 06:00, sampling point LC0010 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 29, 2023 08:00
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-230830-036
Laboratory
MSDH Lab
0.0124 mg/l , sample collected Aug 29, 2023 08:00, sampling point LC0007 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2023 08:00, sampling point LC0007 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 29, 2023 08:25
Sampling point
LC0006 Location withheld
Sample type
Routine
Lab sample
PB-230830-040
Laboratory
MSDH Lab
0.0107 mg/l , sample collected Aug 29, 2023 08:25, sampling point LC0006 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.7 ug/l , sample collected Aug 29, 2023 08:25, sampling point LC0006 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 29, 2023 08:15
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-230830-039
Laboratory
MSDH Lab
0.156 mg/l , sample collected Aug 29, 2023 08:15, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
9.1 ug/l , sample collected Aug 29, 2023 08:15, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 28, 2023 10:30
Sampling point
LC0009 Location withheld
Sample type
Routine
Lab sample
PB-230830-038
Laboratory
MSDH Lab
0.222 mg/l , sample collected Aug 28, 2023 10:30, sampling point LC0009 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 28, 2023 10:30, sampling point LC0009 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Feb 27, 2023 12:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-230228-034
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 27, 2023 12:30, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 27, 2023 12:30, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 27, 2023 12:30, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Feb 27, 2023 12:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-230228-033
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 27, 2023 12:15, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 27, 2023 12:15, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 27, 2023 12:15, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Jan 31, 2023 11:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
VO-230201-001
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 31, 2023 11:00, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Collected
Dec 5, 2022 10:15
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
HA-221206-008
Laboratory
MSDH Lab
2 ug/l , sample collected Dec 5, 2022 10:15, sampling point SMD Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2020 – Dec 31, 2022

Routine (10).