Chemical and radiological sample results

MS0450010 , City of Madison

46 of the 77 analytes this system has been tested for have been detected at least once, across 985 samples on record.

The other 31 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 985 samples on record, detections range from October 6, 2003 to July 15, 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 City of Madison, 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	245 of 245 results	Aug 31, 2004	Jun 20, 2024
TTHM 2950	Organic Chemical	237 of 238 results	Jul 14, 2004	Feb 11, 2026
Total Haloacetic Acids (Haa5) 2456	Organic Chemical	231 of 241 results	Mar 2, 2005	Feb 11, 2026
Chloroform 2941	Organic Chemical	149 of 152 results	Aug 17, 2006	Feb 11, 2026
Bromodichloromethane 2943	Organic Chemical	142 of 152 results	Aug 17, 2006	Feb 11, 2026
Dichloroacetic Acid 2451	Organic Chemical	133 of 147 results	Oct 22, 2007	Feb 11, 2026
Trichloroacetic Acid 2452	Organic Chemical	129 of 147 results	Oct 22, 2007	Feb 11, 2026
Lead 1030	Inorganic Chemical	126 of 245 results	Aug 31, 2004	Jun 20, 2024
Dibromochloromethane 2944	Organic Chemical	90 of 152 results	Oct 18, 2007	Feb 11, 2026
Bromoform 2942	Organic Chemical	43 of 152 results	Oct 23, 2013	Oct 21, 2020
Fluoride 1025	Inorganic Chemical	42 of 42 results	Oct 6, 2003	Jul 15, 2026
Barium 1010	Inorganic Chemical	37 of 37 results	Oct 6, 2003	Jul 15, 2026
Dibromoacetic Acid 2454	Organic Chemical	33 of 147 results	Jun 2, 2008	Oct 21, 2020
Chromium 1020	Inorganic Chemical	18 of 37 results	Oct 6, 2003	Jan 9, 2024
Sodium 1052	Inorganic Chemical	17 of 17 results	May 16, 2007	Feb 24, 2025
Monochloroacetic Acid 2450	Organic Chemical	16 of 147 results	Apr 21, 2008	Jan 30, 2020
Sulfate 1055	Inorganic Chemical	10 of 10 results	Oct 6, 2003	Mar 2, 2021
Radium-226 4020	Radionuclide	7 of 13 results	Oct 2, 2018	Oct 2, 2019
Nickel 1036	Inorganic Chemical	6 of 33 results	Oct 6, 2003	Sep 28, 2022
Calcium 1016	Inorganic Chemical	5 of 5 results	May 16, 2007	Mar 2, 2021
Alkalinity, Total 1927	Water Quality	5 of 5 results	May 16, 2007	Mar 2, 2021
Chloride 1017	Inorganic Chemical	4 of 5 results	Mar 2, 2021	Mar 2, 2021
Conductivity @ 25 C Umhos/CM 1064	Water Quality	4 of 4 results	Mar 2, 2021	Mar 2, 2021
Xylenes, Total 2955	Organic Chemical	4 of 72 results	Jun 16, 2009	May 1, 2013
Color 1905	Water Quality	3 of 4 results	Mar 2, 2021	Mar 2, 2021
Gross Alpha, Incl. Radon & U 4002	Radionuclide	3 of 7 results	Oct 2, 2018	Oct 2, 2019
Monobromoacetic Acid 2453	Organic Chemical	3 of 147 results	Apr 21, 2008	Apr 18, 2018
Nitrate-Nitrite 1038	Inorganic Chemical	2 of 77 results	Apr 26, 2016	Jul 15, 2026
Nitrate 1040	Inorganic Chemical	2 of 77 results	Apr 26, 2016	Jul 15, 2026
Combined Radium (-226 & -228) 4010	Radionuclide	2 of 13 results	Oct 2, 2018	Oct 2, 2018
Radium-228 4030	Radionuclide	2 of 13 results	Oct 2, 2018	Oct 2, 2018
Selenium 1045	Inorganic Chemical	2 of 37 results	Mar 29, 2004	Jan 19, 2010
Thallium, Total 1085	Inorganic Chemical	2 of 37 results	Jan 19, 2010	Jan 19, 2010
Nitrite 1041	Inorganic Chemical	1 of 77 results	Feb 28, 2023	Feb 28, 2023
Potassium 1042	Inorganic Chemical	1 of 1 result	May 16, 2007	May 16, 2007
Residue, Total, Filterable 1057	Water Quality	1 of 1 result	May 16, 2007	May 16, 2007
Alkalinity, Caco3 Stability 1067	Water Quality	1 of 1 result	May 16, 2007	May 16, 2007
Carbon Dioxide 1901	Water Quality	1 of 1 result	May 16, 2007	May 16, 2007
Hardness, Total (As Caco3) 1915	Water Quality	1 of 1 result	May 16, 2007	May 16, 2007
PH 1925	Water Quality	1 of 1 result	May 16, 2007	May 16, 2007
Iron, Field Result FEFD	Inorganic Chemical	1 of 1 result	May 16, 2007	May 16, 2007
Calculated Sodium NACA	Water Quality	1 of 1 result	May 16, 2007	May 16, 2007
PH, Field Result PHFD	Water Quality	1 of 1 result	May 16, 2007	May 16, 2007
Temperature, Field Result TEMP	Water Quality	1 of 1 result	May 16, 2007	May 16, 2007
Cadmium 1015	Inorganic Chemical	1 of 37 results	Apr 6, 2005	Apr 6, 2005
Mercury 1035	Inorganic Chemical	1 of 40 results	Mar 29, 2004	Mar 29, 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 411–420 of 985 samples, newest first — collected August 28, 2018 to September 12, 2018. The summary above covers all 985.

29 results from the 10 samples listed here: 16 detected, 13 not detected. Across the whole record it is 1,767 of 4,636. 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 City of Madison, every result from 411 to 420 of 985 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 12, 2018 Sampling point DS000 Distribution Sample type Routine Lab sample 180914-022PB Laboratory MSDH Lab
0.1055 mg/l , sample collected Sep 12, 2018, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 12, 2018, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Collected Sep 12, 2018 08:25 Sampling point DS000 Distribution Sample type Routine Lab sample 180914-020PB Laboratory MSDH Lab
0.1573 mg/l , sample collected Sep 12, 2018 08:25, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 12, 2018 08:25, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Collected Sep 12, 2018 08:00 Sampling point DS000 Distribution Sample type Routine Lab sample 180914-019PB Laboratory MSDH Lab
0.0965 mg/l , sample collected Sep 12, 2018 08:00, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
0.0005 mg/l , sample collected Sep 12, 2018 08:00, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Collected Sep 12, 2018 07:00 Sampling point DS000 Distribution Sample type Routine Lab sample 180914-018PB Laboratory MSDH Lab
0.0332 mg/l , sample collected Sep 12, 2018 07:00, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 12, 2018 07:00, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Collected Sep 12, 2018 06:00 Sampling point DS000 Distribution Sample type Routine Lab sample 180914-017PB Laboratory MSDH Lab
0.0915 mg/l , sample collected Sep 12, 2018 06:00, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
0.0005 mg/l , sample collected Sep 12, 2018 06:00, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Collected Sep 11, 2018 16:15 Sampling point DS000 Distribution Sample type Routine Lab sample 180914-045PB Laboratory MSDH Lab
0.1078 mg/l , sample collected Sep 11, 2018 16:15, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
0.0007 mg/l , sample collected Sep 11, 2018 16:15, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Collected Sep 11, 2018 18:00 Sampling point DS000 Distribution Sample type Routine Lab sample 180914-028PB Laboratory MSDH Lab
0.0421 mg/l , sample collected Sep 11, 2018 18:00, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 11, 2018 18:00, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Collected Sep 11, 2018 23:30 Sampling point DS000 Distribution Sample type Routine Lab sample 180914-021PB Laboratory MSDH Lab
0.0339 mg/l , sample collected Sep 11, 2018 23:30, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
0.0007 mg/l , sample collected Sep 11, 2018 23:30, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Collected Sep 11, 2018 10:10 Sampling point DS000 Distribution Sample type Routine Lab sample 180914-016PB Laboratory MSDH Lab
0.1197 mg/l , sample collected Sep 11, 2018 10:10, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
0.0006 mg/l , sample collected Sep 11, 2018 10:10, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Collected Aug 28, 2018 09:37 Sampling point TF105 Treatment Facility TF105 Sample type Routine Lab sample 180829-036IN Laboratory MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 28, 2018 09:37, sampling point TF105	Arsenic 1005 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
0.0015 mg/l , sample collected Aug 28, 2018 09:37, sampling point TF105	Barium 1010 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 28, 2018 09:37, sampling point TF105	Cadmium 1015 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 28, 2018 09:37, sampling point TF105	Chromium 1020 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
1.07 mg/l , sample collected Aug 28, 2018 09:37, sampling point TF105	Fluoride 1025 EPA method 300.0	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 28, 2018 09:37, sampling point TF105	Mercury 1035 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 28, 2018 09:37, sampling point TF105	Nickel 1036 EPA method 200.8	Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 28, 2018 09:37, sampling point TF105	Selenium 1045 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 28, 2018 09:37, sampling point TF105	Antimony, Total 1074 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 28, 2018 09:37, sampling point TF105	Beryllium, Total 1075 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 28, 2018 09:37, sampling point TF105	Thallium, Total 1085 EPA method 200.8	Jan 1, 2016 – Dec 31, 2018

Collected
Sep 12, 2018

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
180914-022PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2016 – Dec 31, 2018
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.1055 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Sep 12, 2018 08:25

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
180914-020PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2016 – Dec 31, 2018
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.1573 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Sep 12, 2018 08:00

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
180914-019PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2016 – Dec 31, 2018
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0965 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0005 mg/l
Collected
Sep 12, 2018 07:00

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
180914-018PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2016 – Dec 31, 2018
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0332 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Sep 12, 2018 06:00

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
180914-017PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2016 – Dec 31, 2018
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0915 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0005 mg/l
Collected
Sep 11, 2018 16:15

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
180914-045PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2016 – Dec 31, 2018
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.1078 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0007 mg/l
Collected
Sep 11, 2018 18:00

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
180914-028PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2016 – Dec 31, 2018
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0421 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Sep 11, 2018 23:30

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
180914-021PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2016 – Dec 31, 2018
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0339 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0007 mg/l
Collected
Sep 11, 2018 10:10

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
180914-016PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2016 – Dec 31, 2018
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.1197 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0006 mg/l
Collected
Aug 28, 2018 09:37

Sampling point
TF105 Treatment Facility TF105

Sample type
Routine

Lab sample
180829-036IN

Laboratory
MSDH Lab
- Arsenic 1005 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2016 – Dec 31, 2018
- Barium 1010 EPA method 200.8
  
  Result
  0.0015 mg/l
  
  Monitoring period
  Jan 1, 2016 – Dec 31, 2018
- Cadmium 1015 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2016 – Dec 31, 2018
- Chromium 1020 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2016 – Dec 31, 2018
- Fluoride 1025 EPA method 300.0
  
  Result
  1.07 mg/l
  
  Monitoring period
  Jan 1, 2016 – Dec 31, 2018
- Mercury 1035 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2016 – Dec 31, 2018
- Nickel 1036 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Selenium 1045 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2016 – Dec 31, 2018
- Antimony, Total 1074 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2016 – Dec 31, 2018
- Beryllium, Total 1075 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2016 – Dec 31, 2018
- Thallium, Total 1085 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2016 – Dec 31, 2018

Routine (10).