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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

MS0820010 , Midway W/A #1

37 of the 72 analytes this system has been tested for have been detected at least once, across 313 samples on record.

The other 35 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 313 samples on record, detections range from May 20, 2004 to December 9, 2025. 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 Midway 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
TTHM 2950 Organic Chemical 83 of 95 results Sep 22, 2004 May 9, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 81 of 90 results Sep 22, 2004 May 9, 2025
Copper, Free 1022 Inorganic Chemical 60 of 60 results Aug 21, 2007 Sep 30, 2024
Chloroform 2941 Organic Chemical 49 of 52 results May 24, 2006 Dec 15, 2020
Lead 1030 Inorganic Chemical 47 of 60 results Aug 21, 2007 Sep 30, 2024
Bromodichloromethane 2943 Organic Chemical 44 of 52 results May 24, 2006 Dec 15, 2020
Dichloroacetic Acid 2451 Organic Chemical 43 of 46 results Jul 10, 2008 Dec 15, 2020
Trichloroacetic Acid 2452 Organic Chemical 39 of 46 results Jul 10, 2008 Dec 15, 2020
Fluoride 1025 Inorganic Chemical 11 of 11 results Nov 15, 2004 Dec 9, 2025
Monochloroacetic Acid 2450 Organic Chemical 11 of 46 results Dec 14, 2009 Mar 22, 2020
Barium 1010 Inorganic Chemical 10 of 10 results Nov 15, 2004 Dec 9, 2025
Monobromoacetic Acid 2453 Organic Chemical 10 of 46 results Jun 15, 2009 Dec 15, 2020
Chromium 1020 Inorganic Chemical 7 of 10 results May 2, 2005 Dec 9, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 12, 2011 Jul 17, 2012
Sodium 1052 Inorganic Chemical 4 of 4 results Oct 13, 2009 Mar 28, 2023
Arsenic 1005 Inorganic Chemical 2 of 10 results Dec 9, 2025 Dec 9, 2025
Calcium 1016 Inorganic Chemical 2 of 2 results Oct 13, 2009 Sep 27, 2017
Chloride 1017 Inorganic Chemical 2 of 2 results Oct 13, 2009 Sep 27, 2017
Magnesium 1031 Inorganic Chemical 2 of 2 results Oct 13, 2009 Sep 27, 2017
Manganese 1032 Inorganic Chemical 2 of 2 results Oct 13, 2009 Sep 27, 2017
Potassium 1042 Inorganic Chemical 2 of 2 results Oct 13, 2009 Sep 27, 2017
Residue, Total, Filterable 1057 Water Quality 2 of 2 results Oct 13, 2009 Sep 27, 2017
Alkalinity, Caco3 Stability 1067 Water Quality 2 of 2 results Oct 13, 2009 Sep 27, 2017
Color 1905 Water Quality 2 of 2 results Oct 13, 2009 Sep 27, 2017
Hardness, Total (As Caco3) 1915 Water Quality 2 of 2 results Oct 13, 2009 Sep 27, 2017
Alkalinity, Total 1927 Water Quality 2 of 2 results Oct 13, 2009 Sep 27, 2017
Calculated Sodium NACA Water Quality 2 of 2 results Oct 13, 2009 Sep 27, 2017
PH, Field Result PHFD Water Quality 2 of 2 results Oct 13, 2009 Sep 27, 2017
Dibromochloromethane 2944 Organic Chemical 2 of 52 results Dec 9, 2015 Dec 9, 2015
Iron 1028 Inorganic Chemical 1 of 2 results Sep 27, 2017 Sep 27, 2017
Nickel 1036 Inorganic Chemical 1 of 10 results May 10, 2010 May 10, 2010
Carbon Dioxide 1901 Water Quality 1 of 1 result Oct 13, 2009 Oct 13, 2009
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Oct 13, 2009 Oct 13, 2009
Selenium 1045 Inorganic Chemical 1 of 10 results May 2, 2005 May 2, 2005
Xylenes, Total 2955 Organic Chemical 1 of 12 results May 20, 2004 May 20, 2004
Toluene 2991 Organic Chemical 1 of 12 results May 20, 2004 May 20, 2004
Ethylbenzene 2992 Organic Chemical 1 of 12 results May 20, 2004 May 20, 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 211–220 of 313 samples, newest first — collected September 14, 2011 to July 16, 2012. The summary above covers all 313.

43 results from the 10 samples listed here: 6 detected, 37 not detected. Across the whole record it is 540 of 1,242. 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 Midway W/A #1, every result from 211 to 220 of 313 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, 2012 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120717-002RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 16, 2012 13:00, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012
Collected
Apr 23, 2012 12:35
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120424-064
Laboratory
Radiation Safety Engineering
0.9 pci/l , sample collected Apr 23, 2012 12:35, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Apr 23, 2012 12:35, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.324 pci/l Minimum Reporting Level , sample collected Apr 23, 2012 12:35, sampling point TF101 Radium-226 4020 EPA method 903.1 Apr 1, 2012 – Jun 30, 2012
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Apr 23, 2012 12:35, sampling point TF101 Radium-228 4030 EPA method 904.0 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 23, 2012 12:35
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120424-064RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 23, 2012 12:35, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 9, 2012 12:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120410-017NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 9, 2012 12:15, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 9, 2012 12:15, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 9, 2012 12:15, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Collected
Feb 14, 2012 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120215-008
Laboratory
Radiation Safety Engineering
0.9 pci/l , sample collected Feb 14, 2012 13:00, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Feb 14, 2012 13:00, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.324 pci/l Minimum Reporting Level , sample collected Feb 14, 2012 13:00, sampling point TF101 Radium-226 4020 EPA method 903.1 Jan 1, 2012 – Mar 31, 2012
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Feb 14, 2012 13:00, sampling point TF101 Radium-228 4030 EPA method 904.0 Jan 1, 2012 – Mar 31, 2012
Collected
Feb 14, 2012 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120215-008RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2012 13:00, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jan 1, 2012 – Mar 31, 2012
Collected
Dec 12, 2011 12:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
111213-074
Laboratory
Radiation Safety Engineering
0.9 pci/l , sample collected Dec 12, 2011 12:45, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Dec 12, 2011 12:45, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.324 pci/l Minimum Reporting Level , sample collected Dec 12, 2011 12:45, sampling point TF101 Radium-226 4020 EPA method 903.1 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Dec 12, 2011 12:45, sampling point TF101 Radium-228 4030 EPA method 904.0 Oct 1, 2011 – Dec 31, 2011
Collected
Sep 20, 2011 02:10
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
110921-008VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 20, 2011 02:10, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Collected
Sep 14, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110915-012PB
Laboratory
MSDH Lab
0.1043 mg/l , sample collected Sep 14, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 14, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Sep 14, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110915-035PB
Laboratory
MSDH Lab
0.204 mg/l , sample collected Sep 14, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0015 mg/l , sample collected Sep 14, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011

Routine (10).