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
MS0760044 , Delta Branch Experiment Sta
22 of the 53 analytes this system has been tested for have been detected at least once, across 176 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 176 samples on record, detections range from November 3, 2003 to August 2, 2026. 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 | 69 of 69 results | Jul 12, 2007 | Aug 12, 2025 |
| Lead 1030 | Inorganic Chemical | 37 of 69 results | Jul 12, 2007 | Aug 12, 2025 |
| TTHM 2950 | Organic Chemical | 27 of 27 results | Sep 20, 2004 | Mar 28, 2023 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 24 of 26 results | Nov 17, 2004 | Oct 3, 2022 |
| Chloroform 2941 | Organic Chemical | 17 of 18 results | May 22, 2006 | Aug 16, 2017 |
| Barium 1010 | Inorganic Chemical | 11 of 11 results | Nov 3, 2003 | Aug 2, 2026 |
| Dichloroacetic Acid 2451 | Organic Chemical | 11 of 11 results | Feb 26, 2008 | Aug 16, 2017 |
| Chromium 1020 | Inorganic Chemical | 9 of 11 results | Nov 3, 2003 | Aug 2, 2026 |
| Fluoride 1025 | Inorganic Chemical | 9 of 11 results | Nov 3, 2003 | Aug 2, 2026 |
| Bromodichloromethane 2943 | Organic Chemical | 9 of 18 results | May 22, 2006 | Aug 8, 2011 |
| Dibromochloromethane 2944 | Organic Chemical | 8 of 18 results | Aug 14, 2006 | Aug 8, 2011 |
| Nickel 1036 | Inorganic Chemical | 3 of 10 results | Nov 3, 2003 | May 29, 2013 |
| Arsenic 1005 | Inorganic Chemical | 2 of 11 results | Apr 12, 2004 | Mar 31, 2025 |
| Trichloroacetic Acid 2452 | Organic Chemical | 2 of 11 results | Feb 26, 2008 | Jun 3, 2008 |
| Selenium 1045 | Inorganic Chemical | 2 of 11 results | Apr 12, 2004 | Apr 17, 2006 |
| Sodium 1052 | Inorganic Chemical | 1 of 1 result | Apr 3, 2023 | Apr 3, 2023 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 11 results | Jul 21, 2014 | Jul 21, 2014 |
| Dibromoacetic Acid 2454 | Organic Chemical | 1 of 11 results | Aug 8, 2011 | Aug 8, 2011 |
| Bromoform 2942 | Organic Chemical | 1 of 18 results | Aug 8, 2011 | Aug 8, 2011 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 11 results | Feb 5, 2009 | Feb 5, 2009 |
| Nitrite 1041 | Inorganic Chemical | 1 of 21 results | Jul 28, 2008 | Jul 28, 2008 |
| Sulfate 1055 | Inorganic Chemical | 1 of 2 results | Nov 3, 2003 | Nov 3, 2003 |
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 91–100 of 176 samples, newest first — collected August 8, 2011 to September 17, 2014. The summary above covers all 176.
44 results from the 10 samples listed here: 20 detected, 24 not detected. Across the whole record it is 247 of 665. 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 |
|---|---|---|
|
||
| 0.04 mg/l , sample collected Sep 17, 2014 07:45, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2012 – Dec 31, 2014 |
| 0.0006 mg/l , sample collected Sep 17, 2014 07:45, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2012 – Dec 31, 2014 |
|
||
| 0.04 mg/l , sample collected Sep 17, 2014 06:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2012 – Dec 31, 2014 |
| 0.0005 mg/l , sample collected Sep 17, 2014 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2012 – Dec 31, 2014 |
|
||
| 3.41 ug/l , sample collected Jul 21, 2014 02:10, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 02:10, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 02:10, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 02:10, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 3.41 ug/l , sample collected Jul 21, 2014 02:10, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2012 – Dec 31, 2014 |
|
||
| 0.002 mg/l , sample collected Jul 21, 2014 02:15, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.005 mg/l , sample collected Jul 21, 2014 02:15, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 21, 2014 02:15, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 21, 2014 02:15, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 21, 2014 02:15, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.007 mg/l , sample collected Jul 21, 2014 02:15, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2012 – Dec 31, 2014 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 9, 2013 04:35, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2011 – Dec 31, 2013 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 29, 2013 04:05, sampling point TF101 | Arsenic 1005 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.0041 mg/l , sample collected May 29, 2013 04:05, sampling point TF101 | Barium 1010 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 29, 2013 04:05, sampling point TF101 | Cadmium 1015 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.0042 mg/l , sample collected May 29, 2013 04:05, sampling point TF101 | Chromium 1020 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.593 mg/l , sample collected May 29, 2013 04:05, sampling point TF101 | Fluoride 1025 EPA method 300.0 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 29, 2013 04:05, sampling point TF101 | Mercury 1035 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| 0.0019 mg/l , sample collected May 29, 2013 04:05, sampling point TF101 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 29, 2013 04:05, sampling point TF101 | Selenium 1045 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 29, 2013 04:05, sampling point TF101 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 29, 2013 04:05, sampling point TF101 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 29, 2013 04:05, sampling point TF101 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2011 – Dec 31, 2013 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 15, 2013 04:35, sampling point TF101 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2013 – Dec 31, 2013 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 15, 2013 04:35, sampling point TF101 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2013 – Dec 31, 2013 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 15, 2013 04:35, sampling point TF101 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2013 – Dec 31, 2013 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 7, 2012 05:45, sampling point TF101 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 7, 2012 05:45, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 7, 2012 05:45, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 8, 2011 05:00, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| 5.97 ug/l , sample collected Aug 8, 2011 05:00, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 1.21 ug/l , sample collected Aug 8, 2011 05:00, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 1.58 ug/l , sample collected Aug 8, 2011 05:00, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 8.76 ug/l , sample collected Aug 8, 2011 05:00, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2011 – Dec 31, 2011 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 8, 2011 05:10, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.004 mg/l , sample collected Aug 8, 2011 05:10, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 8, 2011 05:10, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 8, 2011 05:10, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| 0.01 mg/l , sample collected Aug 8, 2011 05:10, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.01 mg/l , sample collected Aug 8, 2011 05:10, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2011 – Dec 31, 2011 |
-
- Collected
- Sep 17, 2014 07:45
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 140918-002PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.04 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0006 mg/l
-
- Collected
- Sep 17, 2014 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 140918-001PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.04 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0005 mg/l
-
- Collected
- Jul 21, 2014 02:10
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 140722-035TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 3.41 ug/l
- 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
- 3.41 ug/l
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
- Collected
- Jul 21, 2014 02:15
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 140722-037HA
- Laboratory
- MSDH Lab
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- 0.002 mg/l
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 0.005 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- 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
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.007 mg/l
- Monitoring period
- Jan 1, 2012 – Dec 31, 2014
-
- Collected
- Oct 9, 2013 04:35
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 131010-014CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- May 29, 2013 04:05
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 130530-050IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Barium 1010 EPA method 200.8
- Result
- 0.0041 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Chromium 1020 EPA method 200.8
- Result
- 0.0042 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Fluoride 1025 EPA method 300.0
- Result
- 0.593 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Nickel 1036 EPA method 200.8
- Result
- 0.0019 mg/l
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0025 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
- Collected
- May 15, 2013 04:35
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 130516-051NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2013 – Dec 31, 2013
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method QC10107041C
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Nov 7, 2012 05:45
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 121108-008NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2012
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Aug 8, 2011 05:00
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 110809-008TH
- 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
- 5.97 ug/l
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 1.21 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 1.58 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 8.76 ug/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2011
-
- Collected
- Aug 8, 2011 05:10
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 110809-008HA
- 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
- 0.004 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- 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
- 0.01 mg/l
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.01 mg/l
- Monitoring period
- Jan 1, 2011 – Dec 31, 2011
Routine (10).