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.
| 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 91–100 of 426 samples, newest first — collected April 20, 2020 to July 13, 2020. The summary above covers all 426.
17 results from the 10 samples listed here: 11 detected, 6 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.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.1854 mg/l , sample collected Jul 13, 2020 07:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 13, 2020 07:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
|
||
| 0.0968 mg/l , sample collected Jul 13, 2020 07:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
| 0.0011 mg/l , sample collected Jul 13, 2020 07:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
|
||
| 0.2533 mg/l , sample collected Jul 13, 2020 06:54, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 13, 2020 06:54, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
|
||
| 0.3511 mg/l , sample collected Jul 13, 2020 05:45, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 13, 2020 05:45, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
|
||
| 0.1104 mg/l , sample collected Jul 13, 2020 06:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
| 0.002 mg/l , sample collected Jul 13, 2020 06:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
|
||
| 0.2814 mg/l , sample collected Jul 13, 2020 05:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
| 0.0011 mg/l , sample collected Jul 13, 2020 05:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
|
||
| 0.4925 mg/l , sample collected Jul 13, 2020 07:45, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
| 0.0007 mg/l , sample collected Jul 13, 2020 07:45, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2020 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 20, 2020 15:00, sampling point TF102 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2020 – Dec 31, 2022 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 20, 2020 15:30, sampling point TF103 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2020 – Dec 31, 2022 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 20, 2020 14:45, sampling point TF104 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2018 – Dec 31, 2020 |
-
- Collected
- Jul 13, 2020 07:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 200714-032PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2020
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1854 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 13, 2020 07:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 200714-031PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2020
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0968 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0011 mg/l
-
- Collected
- Jul 13, 2020 06:54
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 200714-030PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2020
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2533 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 13, 2020 05:45
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 200714-029PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2020
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3511 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 13, 2020 06:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 200714-028PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2020
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1104 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.002 mg/l
-
- Collected
- Jul 13, 2020 05:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 200714-027PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2020
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2814 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0011 mg/l
-
- Collected
- Jul 13, 2020 07:45
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 200714-026PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2020
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.4925 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Apr 20, 2020 15:00
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 200421-003CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2020 – Dec 31, 2022
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Apr 20, 2020 15:30
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 200421-002CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2020 – Dec 31, 2022
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Apr 20, 2020 14:45
- Sampling point
- TF104 Treatment Facility TF104
- Sample type
- Routine
- Lab sample
- 200421-001CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2020
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
Routine (10).