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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.

TTHM results

MS0070007 , Duncan Hill Water Supply

8 samples have been analysed for TTHM at Duncan Hill Water Supply.

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 TTHM result

All 8 samples analysed for this analyte are listed below, newest first. No date range is applied.

8 TTHM results from the 8 samples listed here: 7 detected, 1 not detected. Those samples also carried 16 results for other analytes, which are on the full results page.

Units in this table

TTHM is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

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 The location on record identifies a private home, and we do not publish those.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.

TTHM results for Duncan Hill Water Supply, from the 8 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
Feb 10, 2025 13:12
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
TH-250211-012
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 10, 2025 13:12, sampling point SMD TTHM 2950 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Collected
Sep 12, 2022 14:03
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
TH-220913-002
Laboratory
MSDH Lab
17.2 ug/l , sample collected Sep 12, 2022 14:03, sampling point SMD TTHM 2950 EPA method 524.2 Jan 1, 2020 – Dec 31, 2022
Collected
Sep 6, 2017 13:50
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
170907-005TH
Laboratory
MSDH Lab
8.91 ug/l , sample collected Sep 6, 2017 13:50, sampling point MRT000 TTHM 2950 Jan 1, 2017 – Dec 31, 2019
Collected
Aug 11, 2014 01:21
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
140812-029TH
Laboratory
MSDH Lab
6.74 ug/l , sample collected Aug 11, 2014 01:21, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2014 – Dec 31, 2016
Collected
Jul 11, 2011 12:46
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
110712-017TH
Laboratory
MSDH Lab
17.4 ug/l , sample collected Jul 11, 2011 12:46, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2011 – Dec 31, 2013
Collected
Aug 11, 2008
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
080812-004TH
Laboratory
MSDH Lab
13.5 ug/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Aug 11, 2008, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2008 – Dec 31, 2010
Collected
Jun 25, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070626-012TH
Laboratory
MSDH Lab
2.42 ug/l , sample collected Jun 25, 2007, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2005 – Dec 31, 2007
Collected
May 5, 2004
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
040506-006TH
Laboratory
MSDH Lab
5.71 ug/l , sample collected May 5, 2004, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2004 – Dec 31, 2004

Routine (8).