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 211–220 of 485 samples, newest first — collected August 5, 2015 to September 25, 2015. The summary above covers all 485.
24 results from the 10 samples listed here: 16 detected, 8 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 |
|---|---|---|
|
||
| 0.1639 mg/l , sample collected Sep 25, 2015 08:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| 0.0005 mg/l , sample collected Sep 25, 2015 08:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
|
||
| 0.0043 mg/l , sample collected Sep 25, 2015 08:10, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 25, 2015 08:10, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
|
||
| 0.0042 mg/l , sample collected Sep 25, 2015 08:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 25, 2015 08:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
|
||
| 0.3111 mg/l , sample collected Sep 25, 2015 07:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 25, 2015 07:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
|
||
| 0.0152 mg/l , sample collected Sep 25, 2015 07:35, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| 0.0024 mg/l , sample collected Sep 25, 2015 07:35, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
|
||
| 0.2221 mg/l , sample collected Sep 25, 2015 07:10, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 25, 2015 07:10, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
|
||
| 0.0052 mg/l , sample collected Sep 25, 2015 07:20, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 25, 2015 07:20, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
|
||
| 0.5039 mg/l , sample collected Sep 25, 2015 07:05, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| 0.0007 mg/l , sample collected Sep 25, 2015 07:05, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
|
||
| 0.201 mg/l , sample collected Sep 25, 2015 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 25, 2015 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2013 – Dec 31, 2015 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 5, 2015 12:50, sampling point SM2 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.016 mg/l , sample collected Aug 5, 2015 12:50, sampling point SM2 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.017 mg/l , sample collected Aug 5, 2015 12:50, sampling point SM2 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 5, 2015 12:50, sampling point SM2 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| 0.005 mg/l , sample collected Aug 5, 2015 12:50, sampling point SM2 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.038 mg/l , sample collected Aug 5, 2015 12:50, sampling point SM2 | Total Haloacetic Acids (Haa5) 2456 | Jul 1, 2015 – Sep 30, 2015 |
-
- Collected
- Sep 25, 2015 08:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 151001-049PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1639 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0005 mg/l
-
- Collected
- Sep 25, 2015 08:10
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 151001-043PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0043 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 25, 2015 08:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 151001-037PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0042 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 25, 2015 07:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 151001-030PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3111 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 25, 2015 07:35
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 151001-025PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0152 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0024 mg/l
-
- Collected
- Sep 25, 2015 07:10
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 151001-024PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2221 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 25, 2015 07:20
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 151001-023PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0052 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 25, 2015 07:05
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 151001-022PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.5039 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Sep 25, 2015 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 151001-021PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2015
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.201 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Aug 5, 2015 12:50
- Sampling point
- SM2 Shipping Maintenance
- Sample type
- Routine
- Lab sample
- 150806-002HA
- Laboratory
- MSDH Lab
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 0.002 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 0.016 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.017 mg/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- 0.005 mg/l
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.038 mg/l
- Monitoring period
- Jul 1, 2015 – Sep 30, 2015
Routine (10).