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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
MS0490020 , Hays Creek W/A - Alva
30 samples have been analysed for TTHM at Hays Creek W/A - Alva.
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
The table below lists 11–20 of 30 samples, newest first — collected January 21, 2010 to June 28, 2023.
10 TTHM results from the 10 samples listed here: 5 detected, 5 not detected. Those samples also carried 28 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.
| Result | Analyte | Monitoring period |
|---|---|---|
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| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 28, 2023 13:15, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Not recorded |
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| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 8, 2022 11:05, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Not recorded |
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| 3.55 ug/l , sample collected Sep 29, 2021 13:45, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2021 – Dec 31, 2021 |
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| Not detected below 4 ug/l Minimum Reporting Level , sample collected Sep 28, 2020 13:30, sampling point MRT000 | TTHM 2950 | Jan 1, 2020 – Dec 31, 2020 |
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| 1.21 ug/l , sample collected Sep 11, 2019 13:15, sampling point MRT000 | TTHM 2950 | Jan 1, 2019 – Dec 31, 2019 |
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| Not detected below 4 ug/l Minimum Reporting Level , sample collected Aug 9, 2017 13:00, sampling point MRT000 | TTHM 2950 | Jan 1, 2015 – Dec 31, 2017 |
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| 1.61 ug/l , sample collected Aug 4, 2014 10:00, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2012 – Dec 31, 2014 |
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| Not detected below 4 ug/l Minimum Reporting Level , sample collected Jun 27, 2011 02:15, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2009 – Dec 31, 2011 |
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| 0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. 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 Jan 21, 2010, sampling point SM2 | TTHM 2950 EPA method 524.2 | Not recorded |
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| 0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. 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 Jan 21, 2010, sampling point SM1 | TTHM 2950 EPA method 524.2 | Not recorded |
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- Collected
- Jun 28, 2023 13:15
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- TH-230629-013
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jun 8, 2022 11:05
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- TH-220609-005
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Sep 29, 2021 13:45
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- TH-210930-007
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2021 – Dec 31, 2021
-
TTHM 2950 EPA method 524.2
- Result
- 3.55 ug/l
-
- Collected
- Sep 28, 2020 13:30
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 200929-004TH
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2020 – Dec 31, 2020
-
TTHM 2950
- Result
- Not detected below 4 ug/l Minimum Reporting Level
-
- Collected
- Sep 11, 2019 13:15
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 190912-004TH
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2019 – Dec 31, 2019
-
TTHM 2950
- Result
- 1.21 ug/l
-
- Collected
- Aug 9, 2017 13:00
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 170810-008TH
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
TTHM 2950
- Result
- Not detected below 4 ug/l Minimum Reporting Level
-
- Collected
- Aug 4, 2014 10:00
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 140805-029TH
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
TTHM 2950 EPA method 524.2
- Result
- 1.61 ug/l
-
- Collected
- Jun 27, 2011 02:15
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 110628-017TH
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 4 ug/l Minimum Reporting Level
-
- Collected
- Jan 21, 2010
- Sampling point
- SM2 SM2
- Sample type
- Routine
- Lab sample
- 100122-002TH
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. 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.
-
- Collected
- Jan 21, 2010
- Sampling point
- SM1 SM1
- Sample type
- Routine
- Lab sample
- 100122-001TH
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. 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.
Routine (10).