Skip to main content
Alpha

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.

Chemical and radiological sample results

MS0090004 , Houlka-Houston W/A

28 of the 59 analytes this system has been tested for have been detected at least once, across 426 samples on record.

The other 31 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.

Across all 426 samples on record, detections range from November 30, 1993 to December 8, 2025. These figures cover the whole record.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

What has been detected, ever

Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.

Every analyte ever detected for Houlka-Houston W/A, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 124 of 139 results Nov 30, 1993 Jun 21, 2023
Lead 1030 Inorganic Chemical 87 of 139 results Nov 30, 1993 Jun 21, 2023
Barium 1010 Inorganic Chemical 30 of 30 results Sep 24, 2003 Jan 13, 2025
Fluoride 1025 Inorganic Chemical 30 of 30 results Sep 24, 2003 Jan 13, 2025
TTHM 2950 Organic Chemical 17 of 26 results May 17, 2004 Dec 8, 2025
Chromium 1020 Inorganic Chemical 16 of 30 results Sep 24, 2003 Jan 13, 2025
Xylenes, Total 2955 Organic Chemical 16 of 83 results May 30, 2006 May 21, 2018
Arsenic 1005 Inorganic Chemical 14 of 30 results Jan 18, 2006 Jan 13, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 14 of 28 results Aug 13, 2008 Oct 21, 2024
Selenium 1045 Inorganic Chemical 10 of 30 results Dec 13, 2005 Apr 13, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Mar 8, 2012 Oct 24, 2012
Sodium 1052 Inorganic Chemical 6 of 6 results Feb 1, 2021 Oct 22, 2024
Nitrite 1041 Inorganic Chemical 6 of 60 results May 17, 2004 Feb 1, 2021
Ethylbenzene 2992 Organic Chemical 5 of 83 results Jul 13, 2009 Apr 12, 2011
Nitrate-Nitrite 1038 Inorganic Chemical 4 of 60 results May 17, 2004 Feb 1, 2021
Bromoform 2942 Organic Chemical 3 of 7 results Aug 18, 2014 Dec 8, 2025
Bromodichloromethane 2943 Organic Chemical 3 of 7 results Aug 18, 2014 Dec 8, 2025
Dibromochloromethane 2944 Organic Chemical 3 of 7 results Aug 18, 2014 Dec 8, 2025
Nickel 1036 Inorganic Chemical 3 of 30 results Mar 24, 2008 May 3, 2022
Nitrate 1040 Inorganic Chemical 3 of 60 results May 17, 2004 Jun 26, 2006
Dibromoacetic Acid 2454 Organic Chemical 1 of 8 results Sep 22, 2025 Sep 22, 2025
Monochloroacetic Acid 2450 Organic Chemical 1 of 8 results Apr 20, 2020 Apr 20, 2020
Monobromoacetic Acid 2453 Organic Chemical 1 of 8 results Aug 18, 2014 Aug 18, 2014
Gross Alpha, Excl. Radon & U 4000 Radionuclide 1 of 1 result Apr 23, 2012 Apr 23, 2012
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 12 results Apr 23, 2012 Apr 23, 2012
Radium-226 4020 Radionuclide 1 of 12 results Apr 23, 2012 Apr 23, 2012
Gross Alpha Particle Activity 4109 Radionuclide 1 of 2 results Apr 23, 2012 Apr 23, 2012
Sulfate 1055 Inorganic Chemical 1 of 5 results Jan 14, 2004 Jan 14, 2004

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 41–50 of 426 samples, newest first — collected June 21, 2023 to October 9, 2023. The summary above covers all 426.

13 results from the 10 samples listed here: 10 detected, 3 not detected. Across the whole record it is 412 of 2,763. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 5 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.

Chemical and radiological sample results for Houlka-Houston W/A, every result from 41 to 50 of 426 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Oct 9, 2023 13:30
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
TH-231010-030
Laboratory
MSDH Lab
6 ug/l , sample collected Oct 9, 2023 13:30, sampling point SM2 TTHM 2950 EPA method 524.2 Oct 1, 2023 – Dec 31, 2023
Collected
Oct 9, 2023 13:30
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
HA-231010-030
Laboratory
MSDH Lab
1.15 ug/l , sample collected Oct 9, 2023 13:30, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2023 – Dec 31, 2023
Collected
Oct 9, 2023 14:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-231010-029
Laboratory
MSDH Lab
1.13 ug/l , sample collected Oct 9, 2023 14:00, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Oct 1, 2023 – Dec 31, 2023
Collected
Aug 1, 2023 12:45
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
TH-230802-025
Laboratory
MSDH Lab
6.37 ug/l , sample collected Aug 1, 2023 12:45, sampling point SM2 TTHM 2950 EPA method 524.2 Jul 1, 2023 – Sep 30, 2023
Collected
Aug 1, 2023 13:30
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
TH-230802-024
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 1, 2023 13:30, sampling point SM1 TTHM 2950 EPA method 524.2 Jul 1, 2023 – Sep 30, 2023
Collected
Aug 1, 2023 12:45
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
HA-230802-025
Laboratory
MSDH Lab
1.62 ug/l , sample collected Aug 1, 2023 12:45, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2023 – Sep 30, 2023
Collected
Aug 1, 2023 13:30
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-230802-024
Laboratory
MSDH Lab
2.9 ug/l , sample collected Aug 1, 2023 13:30, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2023 – Sep 30, 2023
Collected
Jun 21, 2023 04:00
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-230622-008
Laboratory
MSDH Lab
0.112 mg/l , sample collected Jun 21, 2023 04:00, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.6 ug/l , sample collected Jun 21, 2023 04:00, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Jun 21, 2023 05:30
Sampling point
LC0022 Location withheld
Sample type
Routine
Lab sample
PB-230622-009
Laboratory
MSDH Lab
0.352 mg/l , sample collected Jun 21, 2023 05:30, sampling point LC0022 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 21, 2023 05:30, sampling point LC0022 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Jun 21, 2023 15:00
Sampling point
LC0006 Location withheld
Sample type
Routine
Lab sample
PB-230622-010
Laboratory
MSDH Lab
0.16 mg/l , sample collected Jun 21, 2023 15:00, sampling point LC0006 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 21, 2023 15:00, sampling point LC0006 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023

Routine (10).