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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.

Total Haloacetic Acids (Haa5) results

MS0450010 , City of Madison

24 samples have been analysed for Total Haloacetic Acids (Haa5) 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 26, 2024 and September 26, 2026. That is this page’s default, not a limit on what the agency records.

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Every Total Haloacetic Acids (Haa5) result

The table below lists 11–20 of 24 samples, newest first — collected January 27, 2025 to July 8, 2025.

10 Total Haloacetic Acids (Haa5) results from the 10 samples listed here: 10 detected, 0 not detected.

We withheld the location of 1 sampling point below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Total Haloacetic Acids (Haa5) results for City of Madison, from 11 to 20 of 24 samples shown 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 8, 2025 12:15
Sampling point
SM4 TCR Site 6 at Fire Sta #2
Sample type
Routine
Lab sample
HA-250709-003
Laboratory
MSDH Lab
16.1 ug/l , sample collected Jul 8, 2025 12:15, sampling point SM4 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2025 – Sep 30, 2025
Collected
Jul 8, 2025 13:00
Sampling point
SM3 TCR Site 18 at McHs
Sample type
Routine
Lab sample
HA-250709-002
Laboratory
MSDH Lab
42.6 ug/l , sample collected Jul 8, 2025 13:00, sampling point SM3 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2025 – Sep 30, 2025
Collected
Apr 15, 2025 11:43
Sampling point
SM6 TCR Site 22 at Hamil's Restaurant
Sample type
Routine
Lab sample
HA-250416-005
Laboratory
MSDH Lab
14.5 ug/l , sample collected Apr 15, 2025 11:43, sampling point SM6 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 15, 2025 12:03
Sampling point
SM5 Location withheld
Sample type
Routine
Lab sample
HA-250416-004
Laboratory
MSDH Lab
8.8 ug/l , sample collected Apr 15, 2025 12:03, sampling point SM5 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 15, 2025 11:52
Sampling point
SM4 TCR Site 6 at Fire Sta #2
Sample type
Routine
Lab sample
HA-250416-003
Laboratory
MSDH Lab
15.4 ug/l , sample collected Apr 15, 2025 11:52, sampling point SM4 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 15, 2025 11:25
Sampling point
SM3 TCR Site 18 at McHs
Sample type
Routine
Lab sample
HA-250416-002
Laboratory
MSDH Lab
37.9 ug/l , sample collected Apr 15, 2025 11:25, sampling point SM3 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Collected
Jan 27, 2025 11:19
Sampling point
SM6 TCR Site 22 at Hamil's Restaurant
Sample type
Routine
Lab sample
HA-250128-006
Laboratory
MSDH Lab
5.27 ug/l , sample collected Jan 27, 2025 11:19, sampling point SM6 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Mar 31, 2025
Collected
Jan 27, 2025 11:00
Sampling point
SM5 Location withheld
Sample type
Routine
Lab sample
HA-250128-005
Laboratory
MSDH Lab
16.9 ug/l , sample collected Jan 27, 2025 11:00, sampling point SM5 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Mar 31, 2025
Collected
Jan 27, 2025 10:40
Sampling point
SM4 TCR Site 6 at Fire Sta #2
Sample type
Routine
Lab sample
HA-250128-004
Laboratory
MSDH Lab
16.7 ug/l , sample collected Jan 27, 2025 10:40, sampling point SM4 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Mar 31, 2025
Collected
Jan 27, 2025 10:55
Sampling point
SM3 TCR Site 18 at McHs
Sample type
Routine
Lab sample
HA-250128-003
Laboratory
MSDH Lab
19.3 ug/l , sample collected Jan 27, 2025 10:55, sampling point SM3 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Mar 31, 2025

Routine (10).