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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

MS0120009 , Town of Stonewall

25 of the 57 analytes this system has been tested for have been detected at least once, across 323 samples on record.

The other 32 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 323 samples on record, detections range from July 20, 1993 to February 18, 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 Town of Stonewall, 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 123 of 152 results Jul 20, 1993 Jun 11, 2025
Lead 1030 Inorganic Chemical 101 of 152 results Jul 20, 1993 Jun 11, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 44 of 44 results May 12, 2004 Feb 18, 2026
TTHM 2950 Organic Chemical 44 of 44 results May 12, 2004 Feb 18, 2026
Chloroform 2941 Organic Chemical 33 of 33 results Jun 4, 2007 Feb 18, 2026
Bromodichloromethane 2943 Organic Chemical 33 of 33 results Jun 4, 2007 Feb 18, 2026
Dibromochloromethane 2944 Organic Chemical 33 of 33 results Jun 4, 2007 Feb 18, 2026
Dichloroacetic Acid 2451 Organic Chemical 29 of 29 results Jun 23, 2008 Feb 18, 2026
Trichloroacetic Acid 2452 Organic Chemical 29 of 29 results Jun 23, 2008 Feb 18, 2026
Dibromoacetic Acid 2454 Organic Chemical 28 of 29 results Jun 23, 2008 Feb 18, 2026
Barium 1010 Inorganic Chemical 21 of 21 results Mar 19, 2002 Jan 14, 2025
Fluoride 1025 Inorganic Chemical 16 of 21 results Jan 26, 2004 Jan 14, 2025
Chromium 1020 Inorganic Chemical 13 of 21 results Mar 19, 2002 Jan 14, 2025
Bromoform 2942 Organic Chemical 11 of 33 results Jun 23, 2008 Feb 18, 2026
Selenium 1045 Inorganic Chemical 10 of 21 results Jan 26, 2004 May 4, 2011
Monochloroacetic Acid 2450 Organic Chemical 6 of 29 results Jun 23, 2008 Apr 17, 2019
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 6, 2011 Jul 11, 2012
Arsenic 1005 Inorganic Chemical 4 of 21 results Dec 5, 2005 May 4, 2011
Nickel 1036 Inorganic Chemical 4 of 21 results Mar 19, 2002 Mar 26, 2008
Cadmium 1015 Inorganic Chemical 4 of 21 results Mar 19, 2002 Jan 23, 2006
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 16, 2019 Oct 15, 2024
Sulfate 1055 Inorganic Chemical 2 of 6 results Mar 19, 2002 Mar 19, 2002
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 31 results Jan 18, 2023 Jan 18, 2023
Nitrite 1041 Inorganic Chemical 1 of 31 results Jan 18, 2023 Jan 18, 2023
Nitrate 1040 Inorganic Chemical 1 of 31 results May 5, 2004 May 5, 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 81–90 of 323 samples, newest first — collected November 7, 2017 to March 19, 2019. The summary above covers all 323.

44 results from the 10 samples listed here: 21 detected, 23 not detected. Across the whole record it is 599 of 1,299. 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 2 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 Town of Stonewall, every result from 81 to 90 of 323 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 19, 2019 13:10
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
190320-033NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 19, 2019 13:10, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 19, 2019 13:10, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 19, 2019 13:10, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Sep 24, 2018 01:12
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
180925-055IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 01:12, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0062 mg/l , sample collected Sep 24, 2018 01:12, sampling point TF104 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 01:12, sampling point TF104 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0022 mg/l , sample collected Sep 24, 2018 01:12, sampling point TF104 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.108 mg/l , sample collected Sep 24, 2018 01:12, sampling point TF104 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 01:12, sampling point TF104 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 01:12, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 01:12, sampling point TF104 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 01:12, sampling point TF104 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 01:12, sampling point TF104 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2018 01:12, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Jul 17, 2018 13:15
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
180718-013RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2018 13:15, sampling point TF104 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
Jun 26, 2018 01:12
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
180627-009TH
Laboratory
MSDH Lab
24.4 ug/l , sample collected Jun 26, 2018 01:12, sampling point SMT Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 26, 2018 01:12, sampling point SMT Bromoform 2942 EPA method 524.2 Not recorded
15.7 ug/l , sample collected Jun 26, 2018 01:12, sampling point SMT Bromodichloromethane 2943 EPA method 524.2 Not recorded
7.98 ug/l , sample collected Jun 26, 2018 01:12, sampling point SMT Dibromochloromethane 2944 EPA method 524.2 Not recorded
48.1 ug/l , sample collected Jun 26, 2018 01:12, sampling point SMT TTHM 2950 Not recorded
Collected
Jun 26, 2018 01:25
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
180627-009HA
Laboratory
MSDH Lab
0.002 mg/l , sample collected Jun 26, 2018 01:25, sampling point SMH Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.008 mg/l , sample collected Jun 26, 2018 01:25, sampling point SMH Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.006 mg/l , sample collected Jun 26, 2018 01:25, sampling point SMH Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 26, 2018 01:25, sampling point SMH Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Jun 26, 2018 01:25, sampling point SMH Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.018 mg/l , sample collected Jun 26, 2018 01:25, sampling point SMH Total Haloacetic Acids (Haa5) 2456 Jan 1, 2018 – Dec 31, 2018
Collected
May 2, 2018
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
180503-018CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 2, 2018, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
Jan 29, 2018 13:10
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
180130-025NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 29, 2018 13:10, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 29, 2018 13:10, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 29, 2018 13:10, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Nov 7, 2017 01:15
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
171108-002HA
Laboratory
MSDH Lab
0.004 mg/l , sample collected Nov 7, 2017 01:15, sampling point SMH Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.009 mg/l , sample collected Nov 7, 2017 01:15, sampling point SMH Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.005 mg/l , sample collected Nov 7, 2017 01:15, sampling point SMH Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 7, 2017 01:15, sampling point SMH Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Nov 7, 2017 01:15, sampling point SMH Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.02 mg/l , sample collected Nov 7, 2017 01:15, sampling point SMH Total Haloacetic Acids (Haa5) 2456 Not recorded
Collected
Nov 7, 2017 01:25
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
171108-002TH
Laboratory
MSDH Lab
14.3 ug/l , sample collected Nov 7, 2017 01:25, sampling point SMT Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 7, 2017 01:25, sampling point SMT Bromoform 2942 EPA method 524.2 Not recorded
12.2 ug/l , sample collected Nov 7, 2017 01:25, sampling point SMT Bromodichloromethane 2943 EPA method 524.2 Not recorded
5.32 ug/l , sample collected Nov 7, 2017 01:25, sampling point SMT Dibromochloromethane 2944 EPA method 524.2 Not recorded
31.8 ug/l , sample collected Nov 7, 2017 01:25, sampling point SMT TTHM 2950 Not recorded
Collected
Nov 7, 2017 13:10
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
171108-008NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 7, 2017 13:10, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 7, 2017 13:10, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 7, 2017 13:10, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017

Routine (10).