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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 71–80 of 143 samples, newest first — collected August 26, 2012 to July 16, 2014. The summary above covers all 143.

44 results from the 10 samples listed here: 12 detected, 32 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 71 to 80 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
Jul 16, 2014 09:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140717-006PB
Laboratory
MSDH Lab
0.117 mg/l , sample collected Jul 16, 2014 09:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0088 mg/l , sample collected Jul 16, 2014 09:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 16, 2014 09:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140717-005PB
Laboratory
MSDH Lab
1.0251 mg/l , sample collected Jul 16, 2014 09:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0706 mg/l , sample collected Jul 16, 2014 09:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 16, 2014 09:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140717-004PB
Laboratory
MSDH Lab
0.0555 mg/l , sample collected Jul 16, 2014 09:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0007 mg/l , sample collected Jul 16, 2014 09:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 16, 2014 09:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140717-003PB
Laboratory
MSDH Lab
0.0095 mg/l , sample collected Jul 16, 2014 09:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0025 mg/l , sample collected Jul 16, 2014 09:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 16, 2014 08:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140717-002PB
Laboratory
MSDH Lab
0.0491 mg/l , sample collected Jul 16, 2014 08:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0022 mg/l , sample collected Jul 16, 2014 08:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 16, 2014 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140717-001PB
Laboratory
MSDH Lab
0.2017 mg/l , sample collected Jul 16, 2014 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0085 mg/l , sample collected Jul 16, 2014 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Mar 31, 2014 15:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
140401-090NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 15:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 15:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 31, 2014 15:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Collected
Sep 11, 2013 02:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130912-011VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 02:30, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Collected
Feb 18, 2013 01:29
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130219-070NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 18, 2013 01:29, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 18, 2013 01:29, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 18, 2013 01:29, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Collected
Aug 26, 2012 02:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
120827-001TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 26, 2012 02:30, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 26, 2012 02:30, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 26, 2012 02:30, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 26, 2012 02:30, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 4 ug/l Minimum Reporting Level , sample collected Aug 26, 2012 02:30, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2011 – Dec 31, 2013

Routine (10).