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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

MS0820028 , Midway W/A #3

34 of the 71 analytes this system has been tested for have been detected at least once, across 291 samples on record.

The other 37 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 291 samples on record, detections range from November 5, 2003 to April 22, 2026. These figures cover the whole record; the list of samples further down is narrowed.

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 Midway W/A #3, 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
TTHM 2950 Organic Chemical 88 of 94 results Sep 1, 2004 Apr 22, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 87 of 98 results Sep 1, 2004 Oct 13, 2025
Chloroform 2941 Organic Chemical 57 of 57 results Oct 4, 2006 Apr 22, 2026
Bromodichloromethane 2943 Organic Chemical 52 of 57 results Oct 4, 2006 Dec 15, 2020
Dichloroacetic Acid 2451 Organic Chemical 51 of 56 results Oct 15, 2007 Apr 22, 2026
Trichloroacetic Acid 2452 Organic Chemical 49 of 56 results Oct 15, 2007 Dec 15, 2020
Copper, Free 1022 Inorganic Chemical 40 of 40 results Aug 23, 2007 Nov 5, 2020
Lead 1030 Inorganic Chemical 30 of 40 results Aug 23, 2007 Nov 5, 2020
Monochloroacetic Acid 2450 Organic Chemical 16 of 56 results Nov 9, 2009 Mar 22, 2020
Fluoride 1025 Inorganic Chemical 11 of 11 results Nov 5, 2003 May 9, 2025
Barium 1010 Inorganic Chemical 10 of 10 results Nov 5, 2003 May 9, 2025
Chromium 1020 Inorganic Chemical 8 of 10 results Apr 5, 2004 May 9, 2025
Monobromoacetic Acid 2453 Organic Chemical 8 of 56 results Dec 9, 2015 Dec 15, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 12, 2011 Aug 7, 2012
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 27, 2017 Mar 28, 2023
Dibromochloromethane 2944 Organic Chemical 2 of 57 results Dec 9, 2015 Dec 9, 2015
Calcium 1016 Inorganic Chemical 1 of 1 result Sep 27, 2017 Sep 27, 2017
Chloride 1017 Inorganic Chemical 1 of 1 result Sep 27, 2017 Sep 27, 2017
Iron 1028 Inorganic Chemical 1 of 1 result Sep 27, 2017 Sep 27, 2017
Magnesium 1031 Inorganic Chemical 1 of 1 result Sep 27, 2017 Sep 27, 2017
Manganese 1032 Inorganic Chemical 1 of 1 result Sep 27, 2017 Sep 27, 2017
Potassium 1042 Inorganic Chemical 1 of 1 result Sep 27, 2017 Sep 27, 2017
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Sep 27, 2017 Sep 27, 2017
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Sep 27, 2017 Sep 27, 2017
Color 1905 Water Quality 1 of 1 result Sep 27, 2017 Sep 27, 2017
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Sep 27, 2017 Sep 27, 2017
Alkalinity, Total 1927 Water Quality 1 of 1 result Sep 27, 2017 Sep 27, 2017
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Sep 27, 2017 Sep 27, 2017
Calculated Sodium NACA Water Quality 1 of 1 result Sep 27, 2017 Sep 27, 2017
PH, Field Result PHFD Water Quality 1 of 1 result Sep 27, 2017 Sep 27, 2017
Nickel 1036 Inorganic Chemical 1 of 10 results May 10, 2010 May 10, 2010
Dibromoacetic Acid 2454 Organic Chemical 1 of 56 results Nov 5, 2008 Nov 5, 2008
Nitrite 1041 Inorganic Chemical 1 of 21 results Aug 14, 2006 Aug 14, 2006
Sulfate 1055 Inorganic Chemical 1 of 3 results Nov 5, 2003 Nov 5, 2003

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The table below lists 11–20 of 25 samples, newest first — collected February 24, 2025 to September 8, 2025. The summary above covers all 25.

20 results from the 10 samples listed here: 7 detected, 13 not detected. Across the whole record it is 535 of 1,157. 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 Midway W/A #3, every result from 11 to 20 of 25 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
Sep 8, 2025 11:30
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
TH-250909-001
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 8, 2025 11:30, sampling point SMT TTHM 2950 EPA method 524.2 Jul 1, 2025 – Sep 30, 2025
Collected
Sep 8, 2025 11:15
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
TH-250909-002
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 8, 2025 11:15, sampling point SMH TTHM 2950 EPA method 524.2 Jul 1, 2025 – Sep 30, 2025
Collected
May 9, 2025 10:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250509-002
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 9, 2025 10:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0074 mg/l , sample collected May 9, 2025 10:00, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 9, 2025 10:00, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0006 mg/l , sample collected May 9, 2025 10:00, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.346 mg/l , sample collected May 9, 2025 10:00, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 9, 2025 10:00, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 9, 2025 10:00, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 9, 2025 10:00, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 9, 2025 10:00, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 9, 2025 10:00, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 9, 2025 10:00, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
May 9, 2025 08:45
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
HA-250509-004
Laboratory
MSDH Lab
21.9 ug/l , sample collected May 9, 2025 08:45, sampling point SMT Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Collected
May 9, 2025 08:15
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
HA-250509-003
Laboratory
MSDH Lab
16.1 ug/l , sample collected May 9, 2025 08:15, sampling point SMH Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Collected
May 9, 2025 08:30
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
TH-250509-004
Laboratory
MSDH Lab
22.4 ug/l , sample collected May 9, 2025 08:30, sampling point SMT TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
May 9, 2025 08:00
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
TH-250509-003
Laboratory
MSDH Lab
22.6 ug/l , sample collected May 9, 2025 08:00, sampling point SMH TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
Feb 24, 2025 14:00
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
TH-250225-029
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 14:00, sampling point SMT TTHM 2950 EPA method 524.2 Jan 1, 2025 – Mar 31, 2025
Collected
Feb 24, 2025 13:45
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
TH-250225-028
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 13:45, sampling point SMH TTHM 2950 EPA method 524.2 Jan 1, 2025 – Mar 31, 2025
Collected
Feb 24, 2025 14:00
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
HA-250225-029
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 14:00, sampling point SMT Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Mar 31, 2025

Routine (10).