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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 61–70 of 143 samples, newest first — collected July 16, 2014 to June 22, 2016. The summary above covers all 143.

37 results from the 10 samples listed here: 10 detected, 27 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 61 to 70 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
Jun 22, 2016 02:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
160623-009TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 4 ug/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 TTHM 2950 Jan 1, 2014 – Dec 31, 2016
Collected
Jun 22, 2016 02:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
160623-009HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Jun 22, 2016 02:00, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2014 – Dec 31, 2016
Collected
Apr 18, 2016 15:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
160419-080NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 18, 2016 15:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 18, 2016 15:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 18, 2016 15:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Apr 6, 2015 02:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
150407-054IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 6, 2015 02:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0241 mg/l , sample collected Apr 6, 2015 02:00, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 6, 2015 02:00, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0028 mg/l , sample collected Apr 6, 2015 02:00, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 6, 2015 02:00, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 6, 2015 02:00, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 6, 2015 02:00, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 6, 2015 02:00, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 6, 2015 02:00, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 6, 2015 02:00, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 6, 2015 02:00, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Collected
Mar 23, 2015 15:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
150324-122NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 23, 2015 15:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 23, 2015 15:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 23, 2015 15:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Mar 9, 2015 02:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
150310-056CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Mar 9, 2015 02:30, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Jul 16, 2014 10:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140717-010PB
Laboratory
MSDH Lab
0.0468 mg/l , sample collected Jul 16, 2014 10:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0013 mg/l , sample collected Jul 16, 2014 10:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 16, 2014 10:10
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140717-009PB
Laboratory
MSDH Lab
0.0183 mg/l , sample collected Jul 16, 2014 10:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0009 mg/l , sample collected Jul 16, 2014 10:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 16, 2014 10:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140717-008PB
Laboratory
MSDH Lab
0.045 mg/l , sample collected Jul 16, 2014 10:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0037 mg/l , sample collected Jul 16, 2014 10:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 16, 2014 10:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140717-007PB
Laboratory
MSDH Lab
0.6066 mg/l , sample collected Jul 16, 2014 10:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0044 mg/l , sample collected Jul 16, 2014 10:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014

Routine (10).