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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

MS0450016 , West Madison Utl Dist

40 of the 72 analytes this system has been tested for have been detected at least once, across 207 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 207 samples on record, detections range from October 6, 2003 to June 25, 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 West Madison Utl Dist, 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 55 of 55 results Jul 12, 2007 Sep 21, 2023
Lead 1030 Inorganic Chemical 40 of 55 results Jul 12, 2007 Sep 21, 2023
Barium 1010 Inorganic Chemical 22 of 22 results Oct 6, 2003 Jun 23, 2026
TTHM 2950 Organic Chemical 20 of 25 results Jul 12, 2004 Jun 25, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 17 of 25 results Sep 29, 2010 Jun 25, 2026
Fluoride 1025 Inorganic Chemical 17 of 23 results Oct 6, 2003 Jun 23, 2026
Chloroform 2941 Organic Chemical 15 of 19 results Aug 30, 2007 Jun 25, 2026
Bromodichloromethane 2943 Organic Chemical 14 of 20 results Sep 29, 2010 Jun 25, 2026
Chromium 1020 Inorganic Chemical 14 of 22 results Oct 6, 2003 Apr 29, 2020
Trichloroacetic Acid 2452 Organic Chemical 13 of 20 results Sep 29, 2010 Jun 25, 2026
Dichloroacetic Acid 2451 Organic Chemical 12 of 20 results Sep 29, 2010 Jun 25, 2026
Sulfate 1055 Inorganic Chemical 7 of 7 results Oct 6, 2003 Feb 13, 2018
Sodium 1052 Inorganic Chemical 6 of 6 results Feb 13, 2018 Jun 23, 2026
Dibromochloromethane 2944 Organic Chemical 6 of 20 results Sep 6, 2013 May 5, 2025
Nickel 1036 Inorganic Chemical 6 of 21 results Mar 10, 2004 Mar 25, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 15, 2011 Jul 17, 2012
Nitrate-Nitrite 1038 Inorganic Chemical 2 of 31 results Dec 9, 2009 Apr 8, 2015
Nitrate 1040 Inorganic Chemical 2 of 31 results Dec 9, 2009 Apr 8, 2015
Selenium 1045 Inorganic Chemical 2 of 22 results Mar 10, 2004 Mar 10, 2010
Monobromoacetic Acid 2453 Organic Chemical 1 of 20 results Sep 15, 2020 Sep 15, 2020
Xylenes, Total 2955 Organic Chemical 1 of 30 results May 20, 2020 May 20, 2020
Calcium 1016 Inorganic Chemical 1 of 1 result Feb 13, 2018 Feb 13, 2018
Chloride 1017 Inorganic Chemical 1 of 1 result Feb 13, 2018 Feb 13, 2018
Iron 1028 Inorganic Chemical 1 of 1 result Feb 13, 2018 Feb 13, 2018
Magnesium 1031 Inorganic Chemical 1 of 1 result Feb 13, 2018 Feb 13, 2018
Manganese 1032 Inorganic Chemical 1 of 1 result Feb 13, 2018 Feb 13, 2018
Potassium 1042 Inorganic Chemical 1 of 1 result Feb 13, 2018 Feb 13, 2018
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Feb 13, 2018 Feb 13, 2018
Carbon Dioxide 1901 Water Quality 1 of 1 result Feb 13, 2018 Feb 13, 2018
Color 1905 Water Quality 1 of 1 result Feb 13, 2018 Feb 13, 2018
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Feb 13, 2018 Feb 13, 2018
Alkalinity, Total 1927 Water Quality 1 of 1 result Feb 13, 2018 Feb 13, 2018
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Feb 13, 2018 Feb 13, 2018
Calculated Sodium NACA Water Quality 1 of 1 result Feb 13, 2018 Feb 13, 2018
PH, Field Result PHFD Water Quality 1 of 1 result Feb 13, 2018 Feb 13, 2018
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 7 results Dec 12, 2012 Dec 12, 2012
Radium-226 4020 Radionuclide 1 of 7 results Dec 12, 2012 Dec 12, 2012
Gross Alpha Particle Activity 4109 Radionuclide 1 of 2 results Dec 12, 2012 Dec 12, 2012
Cyanide 1024 Inorganic Chemical 1 of 15 results Dec 5, 2007 Dec 5, 2007
Dichloromethane 2964 Organic Chemical 1 of 30 results Aug 17, 2004 Aug 17, 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 201–207 of 207 samples, newest first — collected October 6, 2003 to February 17, 2004. The summary above covers all 207.

60 results from the 7 samples listed here: 11 detected, 49 not detected. 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 West Madison Utl Dist, every result from 201 to 207 of 207 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
Feb 17, 2004
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
040218-028VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 1,2,4-Trichlorobenzene 2378 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Cis-1,2-Dichloroethylene 2380 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Xylenes, Total 2955 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Dichloromethane 2964 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 O-Dichlorobenzene 2968 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 P-Dichlorobenzene 2969 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Vinyl Chloride 2976 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 1,1-Dichloroethylene 2977 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Trans-1,2-Dichloroethylene 2979 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 1,2-Dichloroethane 2980 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 1,1,1-Trichloroethane 2981 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Carbon Tetrachloride 2982 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 1,2-Dichloropropane 2983 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Trichloroethylene 2984 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 1,1,2-Trichloroethane 2985 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Tetrachloroethylene 2987 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Chlorobenzene 2989 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Benzene 2990 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Toluene 2991 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Ethylbenzene 2992 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 17, 2004, sampling point TF101 Styrene 2996 Jan 1, 2004 – Mar 31, 2004
Collected
Oct 6, 2003
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
031007-076CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF103 Cyanide 1024 EPA method QC10204001X Not recorded
Collected
Oct 6, 2003
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
031007-022IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF103 Arsenic 1005 EPA method 200.8 Not recorded
0.019 mg/l , sample collected Oct 6, 2003, sampling point TF103 Barium 1010 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF103 Cadmium 1015 EPA method 200.8 Not recorded
0.002 mg/l , sample collected Oct 6, 2003, sampling point TF103 Chromium 1020 EPA method 200.8 Not recorded
0.101 mg/l , sample collected Oct 6, 2003, sampling point TF103 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF103 Mercury 1035 EPA method 200.8 Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF103 Selenium 1045 EPA method 200.8 Not recorded
7.95 mg/l , sample collected Oct 6, 2003, sampling point TF103 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Not recorded
Collected
Oct 6, 2003
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
031007-017IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.024 mg/l , sample collected Oct 6, 2003, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.001 mg/l , sample collected Oct 6, 2003, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.106 mg/l , sample collected Oct 6, 2003, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
9.79 mg/l , sample collected Oct 6, 2003, sampling point TF101 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Collected
Oct 6, 2003
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
031007-016IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.035 mg/l , sample collected Oct 6, 2003, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.001 mg/l , sample collected Oct 6, 2003, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
8.02 mg/l , sample collected Oct 6, 2003, sampling point TF102 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Collected
Oct 6, 2003
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
031007-009CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Oct 6, 2003
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
031007-008CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 6, 2003, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004

Routine (7).