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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.

Arsenic results

MS0090005 , City of Houston

33 samples have been analysed for Arsenic at City of Houston.

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 Arsenic result

The table below lists 1–10 of 33 samples, newest first — collected September 24, 2018 to January 27, 2025.

10 Arsenic results from the 10 samples listed here: 10 detected, 0 not detected. Those samples also carried 100 results for other analytes, which are on the full results page.

Arsenic results for City of Houston, from 1 to 10 of 33 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
Jan 27, 2025 08:00
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
IN-250128-003
Laboratory
MSDH Lab
0.0019 mg/l , sample collected Jan 27, 2025 08:00, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 27, 2025 08:40
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-250128-002
Laboratory
MSDH Lab
0.0018 mg/l , sample collected Jan 27, 2025 08:40, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 27, 2025 08:20
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250128-001
Laboratory
MSDH Lab
0.0018 mg/l , sample collected Jan 27, 2025 08:20, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
May 5, 2022 09:45
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
IN-220506-004
Laboratory
MSDH Lab
0.0019 mg/l , sample collected May 5, 2022 09:45, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
May 5, 2022 09:16
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-220506-003
Laboratory
MSDH Lab
0.0018 mg/l , sample collected May 5, 2022 09:16, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
May 5, 2022 10:11
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-220506-002
Laboratory
MSDH Lab
0.0016 mg/l , sample collected May 5, 2022 10:11, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Apr 8, 2020 12:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
200409-038IN
Laboratory
MSDH Lab
0.0022 mg/l , sample collected Apr 8, 2020 12:30, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Apr 8, 2020 12:15
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
200409-037IN
Laboratory
MSDH Lab
0.0022 mg/l , sample collected Apr 8, 2020 12:15, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Apr 8, 2020 12:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
200409-036IN
Laboratory
MSDH Lab
0.0033 mg/l , sample collected Apr 8, 2020 12:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Sep 24, 2018 09:20
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180925-038IN
Laboratory
MSDH Lab
0.0015 mg/l , sample collected Sep 24, 2018 09:20, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019

Routine (10).