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 271–280 of 426 samples, newest first — collected July 18, 2007 to July 30, 2007. The summary above covers all 426.
23 results from the 10 samples listed here: 18 detected, 5 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 |
|---|---|---|
|
||
| 0.0552 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0058 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0258 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.001 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.021 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.001 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0562 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0014 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0405 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0009 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0053 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 30, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0164 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0008 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0217 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0011 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0167 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0027 mg/l , sample collected Jul 30, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 18, 2007, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 18, 2007, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 18, 2007, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 18, 2007, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 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 Jul 18, 2007, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2005 – Dec 31, 2007 |
-
- Collected
- Jul 30, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070801-010PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0552 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0058 mg/l
-
- Collected
- Jul 30, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070801-006PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0258 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.001 mg/l
-
- Collected
- Jul 30, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070801-005PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.021 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.001 mg/l
-
- Collected
- Jul 30, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070801-001PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0562 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0014 mg/l
-
- Collected
- Jul 30, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070801-004PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0405 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0009 mg/l
-
- Collected
- Jul 30, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070801-003PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0053 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 30, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070801-002PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0164 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Jul 30, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070801-009PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0217 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0011 mg/l
-
- Collected
- Jul 30, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070801-008PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0167 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0027 mg/l
-
- Collected
- Jul 18, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070719-006TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- 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.
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
Routine (10).