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
MS0090005 , City of Houston
20 of the 58 analytes this system has been tested for have been detected at least once, across 540 samples on record.
The other 38 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 540 samples on record, detections range from July 3, 1992 to July 30, 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 | 277 of 324 results | Jul 3, 1992 | Jun 27, 2024 |
| Lead 1030 | Inorganic Chemical | 252 of 324 results | Jul 3, 1992 | Jun 27, 2024 |
| Barium 1010 | Inorganic Chemical | 33 of 33 results | Jul 16, 2002 | Jan 27, 2025 |
| Fluoride 1025 | Inorganic Chemical | 33 of 33 results | Jul 16, 2002 | Jan 27, 2025 |
| Chromium 1020 | Inorganic Chemical | 17 of 33 results | Jul 16, 2002 | Apr 8, 2020 |
| Selenium 1045 | Inorganic Chemical | 17 of 33 results | Jul 16, 2002 | Apr 8, 2020 |
| Arsenic 1005 | Inorganic Chemical | 16 of 33 results | Feb 16, 2005 | Jan 27, 2025 |
| TTHM 2950 | Organic Chemical | 15 of 22 results | Jul 12, 2007 | Jul 30, 2025 |
| Bromoform 2942 | Organic Chemical | 9 of 17 results | May 13, 2019 | Jul 30, 2025 |
| Sodium 1052 | Inorganic Chemical | 9 of 9 results | Sep 24, 2019 | Oct 14, 2024 |
| Nickel 1036 | Inorganic Chemical | 9 of 33 results | Jan 12, 2004 | Apr 8, 2020 |
| Nitrite 1041 | Inorganic Chemical | 8 of 66 results | Apr 11, 2007 | Jan 10, 2022 |
| Dibromochloromethane 2944 | Organic Chemical | 4 of 17 results | May 13, 2019 | Jul 30, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 4 of 66 results | Apr 11, 2007 | May 7, 2008 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 3 of 20 results | Jul 12, 2007 | Aug 20, 2014 |
| Thallium, Total 1085 | Inorganic Chemical | 2 of 33 results | Apr 8, 2020 | Apr 8, 2020 |
| Dibromoacetic Acid 2454 | Organic Chemical | 1 of 14 results | Dec 20, 2023 | Dec 20, 2023 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 14 results | Aug 20, 2014 | Aug 20, 2014 |
| Nitrate 1040 | Inorganic Chemical | 1 of 66 results | Jun 7, 2006 | Jun 7, 2006 |
| Cadmium 1015 | Inorganic Chemical | 1 of 33 results | Feb 16, 2005 | Feb 16, 2005 |
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 121–130 of 540 samples, newest first — collected June 12, 2018 to June 12, 2018. The summary above covers all 540.
20 results from the 10 samples listed here: 18 detected, 2 not detected. Across the whole record it is 712 of 1,935. 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 |
|---|---|---|
|
||
| 0.1807 mg/l , sample collected Jun 12, 2018 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0008 mg/l , sample collected Jun 12, 2018 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.0245 mg/l , sample collected Jun 12, 2018 08:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0007 mg/l , sample collected Jun 12, 2018 08:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.0453 mg/l , sample collected Jun 12, 2018 09:45, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0011 mg/l , sample collected Jun 12, 2018 09:45, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.0227 mg/l , sample collected Jun 12, 2018 07:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 12, 2018 07:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.2677 mg/l , sample collected Jun 12, 2018 06:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0016 mg/l , sample collected Jun 12, 2018 06:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.1112 mg/l , sample collected Jun 12, 2018 05:40, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0047 mg/l , sample collected Jun 12, 2018 05:40, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.1501 mg/l , sample collected Jun 12, 2018 06:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0011 mg/l , sample collected Jun 12, 2018 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.1452 mg/l , sample collected Jun 12, 2018 05:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0025 mg/l , sample collected Jun 12, 2018 05:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.1022 mg/l , sample collected Jun 12, 2018 06:20, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 12, 2018 06:20, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
|
||
| 0.0248 mg/l , sample collected Jun 12, 2018 04:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
| 0.0006 mg/l , sample collected Jun 12, 2018 04:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2016 – Dec 31, 2018 |
-
- Collected
- Jun 12, 2018 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180613-134PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1807 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Jun 12, 2018 08:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180613-133PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0245 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Jun 12, 2018 09:45
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180613-131PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0453 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0011 mg/l
-
- Collected
- Jun 12, 2018 07:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180613-130PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0227 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 12, 2018 06:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180613-129PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2677 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0016 mg/l
-
- Collected
- Jun 12, 2018 05:40
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180613-128PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1112 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0047 mg/l
-
- Collected
- Jun 12, 2018 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180613-127PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1501 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0011 mg/l
-
- Collected
- Jun 12, 2018 05:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180613-126PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1452 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0025 mg/l
-
- Collected
- Jun 12, 2018 06:20
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180613-125PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1022 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 12, 2018 04:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180613-124PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2016 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0248 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0006 mg/l
Routine (10).