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.
Mercury results
MS0450016 , West Madison Utl Dist
22 samples have been analysed for Mercury at West Madison Utl Dist.
This is one analyte out of the system’s whole record. For what has ever been detected here, and when, see all chemical and radiological results; for everything the system is tested for, see the analyte list.
What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.
No date range is applied: this list draws on every sample on record. Show the last two years only.
Every Mercury result
The table below lists 1–10 of 22 samples, newest first — collected May 1, 2013 to June 23, 2026.
10 Mercury results from the 10 samples listed here: 0 detected, 10 not detected. Those samples also carried 124 results for other analytes, which are on the full results page.
Units in this table
Mercury is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.
| Result | Analyte | Monitoring period |
|---|---|---|
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| Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Jun 23, 2026, sampling point TF103 | Mercury 1035 EPA method 245.1 | Not recorded |
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 12, 2024 15:10, sampling point TF104 | Mercury 1035 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 25, 2023 12:42, sampling point TF104 | Mercury 1035 EPA method 200.8 | Jan 1, 2021 – Dec 31, 2023 |
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 29, 2020, sampling point TF104 | Mercury 1035 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 25, 2020 18:00, sampling point TF102 | Mercury 1035 EPA method 200.8 | Not recorded |
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 25, 2020 18:40, sampling point TF104 | Mercury 1035 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 16, 2017 17:00, sampling point DS000 | Mercury 1035 EPA method 200.8 | Not recorded |
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 10, 2017 02:30, sampling point TF104 | Mercury 1035 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 3, 2014 05:51, sampling point TF104 | Mercury 1035 EPA method 200.8 | Jan 1, 2012 – Dec 31, 2014 |
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 1, 2013 08:45, sampling point TF103 | Mercury 1035 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
-
- Collected
- Jun 23, 2026
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 35046260001
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Not recorded
-
Mercury 1035 EPA method 245.1
- Result
- Not detected below 0.2 ug/l Minimum Reporting Level
-
- Collected
- Feb 12, 2024 15:10
- Sampling point
- TF104 Treatment Facility TF104
- Sample type
- Routine
- Lab sample
- IN-240214-012
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Oct 25, 2023 12:42
- Sampling point
- TF104 Treatment Facility TF104
- Sample type
- Routine
- Lab sample
- IN-231027-002
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2021 – Dec 31, 2023
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Apr 29, 2020
- Sampling point
- TF104 Treatment Facility TF104
- Sample type
- Routine
- Lab sample
- 200501-001IN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2020
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Mar 25, 2020 18:00
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 200327-002IN
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Mar 25, 2020 18:40
- Sampling point
- TF104 Treatment Facility TF104
- Sample type
- Routine
- Lab sample
- 200327-001IN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2020
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Aug 16, 2017 17:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170818-001IN
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- May 10, 2017 02:30
- Sampling point
- TF104 Treatment Facility TF104
- Sample type
- Routine
- Lab sample
- 170512-001IN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Dec 3, 2014 05:51
- Sampling point
- TF104 Treatment Facility TF104
- Sample type
- Routine
- Lab sample
- 141204-008IN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- May 1, 2013 08:45
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 130502-005IN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
Routine (10).