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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.

Nitrate-Nitrite results

MS0450010 , City of Madison

5 samples have been analysed for Nitrate-Nitrite at City of Madison.

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.

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

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Every Nitrate-Nitrite result

The 5 samples analysed for this analyte collected between September 25, 2024 and September 25, 2026 are listed below, newest first.

5 Nitrate-Nitrite results from the 5 samples listed here: 1 detected, 4 not detected. Those samples also carried 20 results for other analytes, which are on the full results page.

Nitrate-Nitrite results for City of Madison, from the 5 samples analysed for it, newest first. This view leaves out other analytes on the same samples. 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 15, 2026
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
35051214001
Laboratory
Pace Analytical Services, LLC
0.059 mg/l , sample collected Jul 15, 2026, sampling point TF080 Nitrate-Nitrite 1038 Not recorded
Collected
Mar 11, 2025 10:17
Sampling point
TF105 Treatment Facility TF105
Sample type
Routine
Lab sample
NI-250311-076
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:17, sampling point TF105 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Mar 11, 2025 10:40
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
NI-250311-075
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:40, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Mar 11, 2025 10:10
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NI-250311-074
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:10, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Mar 11, 2025 10:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-250311-073
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025

Routine (5).