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 361–370 of 426 samples, newest first — collected June 11, 1996 to August 28, 2000. The summary above covers all 426.
20 results from the 10 samples listed here: 16 detected, 4 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 |
|---|---|---|
|
||
| 0.046 mg/l , sample collected Aug 28, 2000, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 28, 2000, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.007 mg/l , sample collected Aug 28, 2000, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.004 mg/l , sample collected Aug 28, 2000, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.002 mg/l , sample collected Aug 28, 2000, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 28, 2000, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.053 mg/l , sample collected Aug 28, 2000, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 28, 2000, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Jun 11, 1996, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.253 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.003 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.252 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.131 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.007 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.224 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.004 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.129 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected Jun 11, 1996, sampling point DS000 | Lead 1030 | Not recorded |
-
- Collected
- Aug 28, 2000
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 000829-051L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.046 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Aug 28, 2000
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 000829-048L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.007 mg/l
-
Lead 1030
- Result
- 0.004 mg/l
-
- Collected
- Aug 28, 2000
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 000829-047L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.002 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Aug 28, 2000
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 000829-046L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.053 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Jun 11, 1996
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 960612-154L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.002 mg/l
-
- Collected
- Jun 11, 1996
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 960612-150L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.253 mg/l
-
Lead 1030
- Result
- 0.003 mg/l
-
- Collected
- Jun 11, 1996
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 960612-149L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.252 mg/l
-
Lead 1030
- Result
- 0.002 mg/l
-
- Collected
- Jun 11, 1996
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 960612-139L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.131 mg/l
-
Lead 1030
- Result
- 0.007 mg/l
-
- Collected
- Jun 11, 1996
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 960612-135L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.224 mg/l
-
Lead 1030
- Result
- 0.004 mg/l
-
- Collected
- Jun 11, 1996
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 960612-133L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.129 mg/l
-
Lead 1030
- Result
- 0.002 mg/l
Routine (10).