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
MS0300011 , Chevron Usa
23 of the 53 analytes this system has been tested for have been detected at least once, across 485 samples on record.
The other 30 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 485 samples on record, detections range from September 22, 2003 to December 9, 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 | 149 of 150 results | Jun 29, 2004 | Sep 30, 2024 |
| TTHM 2950 | Organic Chemical | 130 of 130 results | Sep 13, 2004 | Dec 9, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 126 of 127 results | Oct 7, 2005 | Dec 9, 2025 |
| Chloroform 2941 | Organic Chemical | 87 of 87 results | Mar 14, 2007 | Dec 14, 2020 |
| Bromodichloromethane 2943 | Organic Chemical | 87 of 87 results | Mar 14, 2007 | Dec 14, 2020 |
| Dibromochloromethane 2944 | Organic Chemical | 87 of 87 results | Mar 14, 2007 | Dec 14, 2020 |
| Dichloroacetic Acid 2451 | Organic Chemical | 81 of 81 results | Mar 19, 2008 | Dec 14, 2020 |
| Trichloroacetic Acid 2452 | Organic Chemical | 81 of 81 results | Mar 19, 2008 | Dec 14, 2020 |
| Dibromoacetic Acid 2454 | Organic Chemical | 79 of 81 results | Mar 19, 2008 | Dec 14, 2020 |
| Lead 1030 | Inorganic Chemical | 59 of 150 results | Jun 29, 2004 | Sep 30, 2024 |
| Monochloroacetic Acid 2450 | Organic Chemical | 41 of 81 results | Mar 19, 2008 | Dec 14, 2020 |
| Bromoform 2942 | Organic Chemical | 39 of 87 results | May 2, 2007 | Aug 19, 2020 |
| Monobromoacetic Acid 2453 | Organic Chemical | 23 of 81 results | Oct 30, 2008 | Aug 19, 2020 |
| Barium 1010 | Inorganic Chemical | 15 of 15 results | Sep 22, 2003 | Feb 12, 2025 |
| Fluoride 1025 | Inorganic Chemical | 15 of 15 results | Sep 22, 2003 | Feb 12, 2025 |
| Arsenic 1005 | Inorganic Chemical | 10 of 15 results | Mar 16, 2005 | Feb 12, 2025 |
| Chromium 1020 | Inorganic Chemical | 10 of 15 results | Sep 22, 2003 | May 18, 2022 |
| Selenium 1045 | Inorganic Chemical | 6 of 15 results | Nov 15, 2004 | Feb 8, 2006 |
| Nickel 1036 | Inorganic Chemical | 2 of 15 results | May 12, 2010 | Nov 26, 2012 |
| Sulfate 1055 | Inorganic Chemical | 2 of 2 results | Sep 22, 2003 | Sep 22, 2003 |
| Sodium 1052 | Inorganic Chemical | 1 of 1 result | Mar 22, 2021 | Mar 22, 2021 |
| Thallium, Total 1085 | Inorganic Chemical | 1 of 15 results | May 12, 2010 | May 12, 2010 |
| Carbon Tetrachloride 2982 | Organic Chemical | 1 of 20 results | Jun 19, 2007 | Jun 19, 2007 |
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 461–470 of 485 samples, newest first — collected June 29, 2004 to June 29, 2004. The summary above covers all 485.
20 results from the 10 samples listed here: 18 detected, 2 not detected. Across the whole record it is 1,132 of 1,992. 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 |
|---|---|---|
|
||
| 0.0161 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
| 0.0027 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
|
||
| 1.9335 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
| 0.0008 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
|
||
| 0.0021 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
| 0.0023 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
|
||
| 0.1295 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 29, 2004, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
|
||
| 0.3531 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
| 0.0007 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
|
||
| 0.0193 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
| 0.001 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
|
||
| 0.0048 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 29, 2004, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
|
||
| 0.0117 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
| 0.0037 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
|
||
| 0.385 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
| 0.0045 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
|
||
| 0.0592 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
| 0.0017 mg/l , sample collected Jun 29, 2004, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2004 – Jun 30, 2004 |
-
- Collected
- Jun 29, 2004
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 040630-257PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2004 – Jun 30, 2004
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0161 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0027 mg/l
-
- Collected
- Jun 29, 2004
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 040630-263PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2004 – Jun 30, 2004
-
Copper, Free 1022 EPA method 200.8
- Result
- 1.9335 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Jun 29, 2004
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 040630-256PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2004 – Jun 30, 2004
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0021 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0023 mg/l
-
- Collected
- Jun 29, 2004
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 040630-249PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2004 – Jun 30, 2004
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1295 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 29, 2004
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 040630-267PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2004 – Jun 30, 2004
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3531 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Jun 29, 2004
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 040630-253PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2004 – Jun 30, 2004
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0193 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.001 mg/l
-
- Collected
- Jun 29, 2004
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 040630-260PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2004 – Jun 30, 2004
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0048 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 29, 2004
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 040630-255PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2004 – Jun 30, 2004
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0117 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0037 mg/l
-
- Collected
- Jun 29, 2004
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 040630-261PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2004 – Jun 30, 2004
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.385 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0045 mg/l
-
- Collected
- Jun 29, 2004
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 040630-259PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2004 – Jun 30, 2004
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0592 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0017 mg/l
Routine (10).