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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

MS0620010 , Sebastopol Water Association

15 samples have been analysed for Total Haloacetic Acids (Haa5) at Sebastopol Water Association.

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 Total Haloacetic Acids (Haa5) result

The table below lists 1–10 of 15 samples, newest first — collected November 24, 2025 to June 23, 2026.

10 Total Haloacetic Acids (Haa5) results from the 10 samples listed here: 3 detected, 7 not detected. Those samples also carried 95 results for other analytes, which are on the full results page.

We withheld the location of 2 sampling points 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 The location on record identifies a private home, and we do not publish those.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 Sebastopol Water Association, from 1 to 10 of 15 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
Jun 23, 2026 10:00
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-197248-2
Laboratory
Eurofins Eaton Analytical South Bend in
5.3 ug/l , sample collected Jun 23, 2026 10:00, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2026 – Jun 30, 2026
Collected
Jun 23, 2026 09:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-197248-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jun 23, 2026 09:00, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2026 – Jun 30, 2026
Collected
Jun 23, 2026 10:15
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-197169-2
Laboratory
Eurofins Eaton Analytical South Bend in
5.6 ug/l , sample collected Jun 23, 2026 10:15, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2026 – Jun 30, 2026
Collected
Jun 23, 2026 09:15
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-197169-1
Laboratory
Eurofins Eaton Analytical South Bend in
2.1 ug/l , sample collected Jun 23, 2026 09:15, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2026 – Jun 30, 2026
Collected
Feb 10, 2026 12:00
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-180558-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Feb 10, 2026 12:00, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2026 – Mar 31, 2026
Collected
Feb 10, 2026 11:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-180558-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Feb 10, 2026 11:00, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2026 – Mar 31, 2026
Collected
Dec 8, 2025 13:30
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-174825-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 13:30, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2025 – Dec 31, 2025
Collected
Dec 8, 2025 13:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-174825-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 8, 2025 13:00, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2025 – Dec 31, 2025
Collected
Nov 24, 2025 14:00
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-173227-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 24, 2025 14:00, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2025 – Dec 31, 2025
Collected
Nov 24, 2025 13:30
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-173227-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 24, 2025 13:30, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2025 – Dec 31, 2025

Routine (10).