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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

MS0320003 , McNair-Stampley W/A #1

15 of the 57 analytes this system has been tested for have been detected at least once, across 143 samples on record.

The other 42 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 143 samples on record, detections range from September 24, 2003 to June 29, 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 McNair-Stampley W/A #1, 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 53 of 53 results Aug 6, 2008 Aug 31, 2023
Lead 1030 Inorganic Chemical 48 of 53 results Aug 6, 2008 Aug 31, 2023
Barium 1010 Inorganic Chemical 10 of 10 results Sep 24, 2003 Mar 5, 2025
TTHM 2950 Organic Chemical 7 of 20 results Sep 4, 2007 Jun 29, 2026
Chromium 1020 Inorganic Chemical 5 of 10 results Sep 24, 2003 Apr 6, 2015
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 13, 2011 Jul 20, 2012
Bromodichloromethane 2943 Organic Chemical 4 of 15 results Dec 31, 2025 Jun 29, 2026
Dibromochloromethane 2944 Organic Chemical 4 of 15 results Dec 31, 2025 Jun 29, 2026
Fluoride 1025 Inorganic Chemical 4 of 11 results Feb 25, 2004 Mar 5, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 4 of 19 results Sep 27, 2007 May 10, 2023
Nickel 1036 Inorganic Chemical 4 of 10 results Sep 24, 2003 May 18, 2022
Chloroform 2941 Organic Chemical 3 of 15 results Oct 8, 2008 Jun 29, 2026
Sodium 1052 Inorganic Chemical 2 of 2 results Feb 9, 2022 Feb 5, 2025
Sulfate 1055 Inorganic Chemical 2 of 2 results Sep 24, 2003 Feb 25, 2004
Bromoform 2942 Organic Chemical 1 of 15 results Dec 31, 2025 Dec 31, 2025

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 143 samples, newest first — collected June 8, 2021 to February 28, 2023. The summary above covers all 143.

44 results from the 10 samples listed here: 4 detected, 40 not detected. Across the whole record it is 156 of 631. 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 McNair-Stampley W/A #1, every result from 31 to 40 of 143 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
Feb 28, 2023 14:50
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-230301-096
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 28, 2023 14:50, 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 28, 2023 14:50, 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 28, 2023 14:50, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Jun 15, 2022 17:51
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
VO-220616-029
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 15, 2022 17:51, sampling point TF101 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 Jun 15, 2022 17:51, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 15, 2022 17:51, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 15, 2022 17:51, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 15, 2022 17:51, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 15, 2022 17:51, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 15, 2022 17:51, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
May 18, 2022 17:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-220520-008
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 18, 2022 17:30, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0228 mg/l , sample collected May 18, 2022 17:30, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 18, 2022 17:30, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 18, 2022 17:30, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 18, 2022 17:30, sampling point TF101 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 May 18, 2022 17:30, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0009 mg/l , sample collected May 18, 2022 17:30, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 18, 2022 17:30, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 18, 2022 17:30, sampling point TF101 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 May 18, 2022 17:30, sampling point TF101 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 May 18, 2022 17:30, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Mar 23, 2022 15:40
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-220324-024
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 23, 2022 15:40, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Mar 23, 2022 15:33
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-220324-025
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 23, 2022 15:33, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
Feb 9, 2022 13:29
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NA-220210-034
Laboratory
MSDH Lab
134 mg/l , sample collected Feb 9, 2022 13:29, sampling point TF101 Sodium 1052 EPA method 200.7 Not recorded
Collected
Feb 9, 2022 13:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-220210-044
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 9, 2022 13:30, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 9, 2022 13:30, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 9, 2022 13:30, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Sep 15, 2021 15:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-210916-013
Laboratory
MSDH Lab
2.64 ug/l , sample collected Sep 15, 2021 15:30, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2021
Collected
Sep 15, 2021 15:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-210916-013
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 15, 2021 15:30, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Jun 8, 2021 18:20
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-210609-023
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 8, 2021 18:20, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022

Routine (10).