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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 161–170 of 207 samples, newest first — collected July 12, 2007 to June 3, 2009. The summary above covers all 207.

38 results from the 10 samples listed here: 12 detected, 26 not detected. Across the whole record it is 296 of 1,382. 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 161 to 170 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
Jun 3, 2009
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
090603-005NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Jun 3, 2009, sampling point TF103 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Jun 3, 2009, sampling point TF103 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 3, 2009, sampling point TF103 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2008
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
081028-040NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Oct 27, 2008, sampling point TF103 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Oct 27, 2008, sampling point TF103 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Oct 27, 2008, sampling point TF103 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
Jul 10, 2008
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
080710-095NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jul 10, 2008, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jul 10, 2008, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 10, 2008, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
Dec 5, 2007
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
071205-006IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 5, 2007, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.00482 mg/l , sample collected Dec 5, 2007, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Dec 5, 2007, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 5, 2007, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.14 mg/l , sample collected Dec 5, 2007, sampling point TF103 Fluoride 1025 EPA method 380-75WE Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Dec 5, 2007, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.004328 mg/l , sample collected Dec 5, 2007, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 5, 2007, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 5, 2007, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Dec 5, 2007, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 5, 2007, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Collected
Dec 5, 2007
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
071206-001CN
Laboratory
MSDH Lab
0.00565 mg/l , sample collected Dec 5, 2007, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Aug 30, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070831-017HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 30, 2007, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 30, 2007, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 30, 2007, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 30, 2007, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 30, 2007, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Aug 30, 2007, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2005 – Dec 31, 2007
Collected
Aug 30, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070831-011TH
Laboratory
MSDH Lab
1.18 ug/l , sample collected Aug 30, 2007, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 30, 2007, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 30, 2007, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 30, 2007, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
1.18 ug/l , sample collected Aug 30, 2007, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2005 – Dec 31, 2007
Collected
Jul 12, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070712-096PB
Laboratory
MSDH Lab
0.1298 mg/l , sample collected Jul 12, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0007 mg/l , sample collected Jul 12, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Jul 12, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070712-095PB
Laboratory
MSDH Lab
0.1725 mg/l , sample collected Jul 12, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0013 mg/l , sample collected Jul 12, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Jul 12, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070712-094PB
Laboratory
MSDH Lab
0.0899 mg/l , sample collected Jul 12, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.005 mg/l , sample collected Jul 12, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008

Routine (10).