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 141–150 of 176 samples, newest first — collected April 17, 2006 to March 12, 2007. The summary above covers all 176.
39 results from the 10 samples listed here: 22 detected, 17 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 |
|---|---|---|
|
||
| 70.5 ug/l , sample collected Mar 12, 2007, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 12, 2007, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 26 ug/l , sample collected Mar 12, 2007, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 7.23 ug/l , sample collected Mar 12, 2007, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 103.73 ug/l , sample collected Mar 12, 2007, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2007 – Mar 31, 2007 |
|
||
| 0.0594 mg/l , sample collected Mar 12, 2007, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2007 – Mar 31, 2007 |
|
||
| 0.0724 mg/l 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 Dec 4, 2006, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2006 – Dec 31, 2006 |
|
||
| 65.3 ug/l , sample collected Dec 4, 2006, sampling point MRT000 | Chloroform 2941 EPA method 551.1 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 4, 2006, sampling point MRT000 | Bromoform 2942 EPA method 551.1 | Not recorded |
| 25.3 ug/l , sample collected Dec 4, 2006, sampling point MRT000 | Bromodichloromethane 2943 EPA method 551.1 | Not recorded |
| 8.16 ug/l , sample collected Dec 4, 2006, sampling point MRT000 | Dibromochloromethane 2944 EPA method 551.1 | Not recorded |
| 98.76 ug/l , sample collected Dec 4, 2006, sampling point MRT000 | TTHM 2950 EPA method 551.1 | Oct 1, 2006 – Dec 31, 2006 |
|
||
| 76.2 ug/l , sample collected Aug 14, 2006, sampling point MRT000 | Chloroform 2941 EPA method 551.1 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 14, 2006, sampling point MRT000 | Bromoform 2942 EPA method 551.1 | Not recorded |
| 30.9 ug/l , sample collected Aug 14, 2006, sampling point MRT000 | Bromodichloromethane 2943 EPA method 551.1 | Not recorded |
| 7.97 ug/l , sample collected Aug 14, 2006, sampling point MRT000 | Dibromochloromethane 2944 EPA method 551.1 | Not recorded |
| 115.07 ug/l , sample collected Aug 14, 2006, sampling point MRT000 | TTHM 2950 EPA method 551.1 | Jul 1, 2006 – Sep 30, 2006 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Aug 7, 2006, sampling point TF101 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Aug 7, 2006, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Aug 7, 2006, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| 0.017 mg/l 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 May 22, 2006, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Apr 1, 2006 – Jun 30, 2006 |
|
||
| 14.1 ug/l , sample collected May 22, 2006, sampling point MRT000 | Chloroform 2941 EPA method 551.1 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected May 22, 2006, sampling point MRT000 | Bromoform 2942 EPA method 551.1 | Not recorded |
| 1.57 ug/l , sample collected May 22, 2006, sampling point MRT000 | Bromodichloromethane 2943 EPA method 551.1 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected May 22, 2006, sampling point MRT000 | Dibromochloromethane 2944 EPA method 551.1 | Not recorded |
| 15.67 ug/l , sample collected May 22, 2006, sampling point MRT000 | TTHM 2950 EPA method 551.1 | Apr 1, 2006 – Jun 30, 2006 |
|
||
| Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Apr 17, 2006, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2005 – Dec 31, 2007 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 17, 2006, sampling point TF101 | Arsenic 1005 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.004 mg/l , sample collected Apr 17, 2006, sampling point TF101 | Barium 1010 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Apr 17, 2006, sampling point TF101 | Cadmium 1015 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.00187 mg/l , sample collected Apr 17, 2006, sampling point TF101 | Chromium 1020 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.683867 mg/l , sample collected Apr 17, 2006, sampling point TF101 | Fluoride 1025 EPA method 380-75WE | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Apr 17, 2006, sampling point TF101 | Mercury 1035 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 17, 2006, sampling point TF101 | Nickel 1036 EPA method 200.8 | Not recorded |
| 0.001711 mg/l , sample collected Apr 17, 2006, sampling point TF101 | Selenium 1045 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 17, 2006, sampling point TF101 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Apr 17, 2006, sampling point TF101 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 17, 2006, sampling point TF101 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 17, 2006, sampling point TF101 | Uranium-238 4009 | Not recorded |
-
- Collected
- Mar 12, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070313-006TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 70.5 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
- 26 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 7.23 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 103.73 ug/l
- Monitoring period
- Jan 1, 2007 – Mar 31, 2007
-
- Collected
- Mar 12, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070313-007HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Mar 31, 2007
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.0594 mg/l
-
- Collected
- Dec 4, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 061205-005HA
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2006 – Dec 31, 2006
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.0724 mg/l 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.
-
- Collected
- Dec 4, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 061205-007TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 551.1
- Result
- 65.3 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 551.1
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 551.1
- Result
- 25.3 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 551.1
- Result
- 8.16 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 551.1
- Result
- 98.76 ug/l
- Monitoring period
- Oct 1, 2006 – Dec 31, 2006
-
- Collected
- Aug 14, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 060815-006TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 551.1
- Result
- 76.2 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 551.1
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 551.1
- Result
- 30.9 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 551.1
- Result
- 7.97 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 551.1
- Result
- 115.07 ug/l
- Monitoring period
- Jul 1, 2006 – Sep 30, 2006
-
- Collected
- Aug 7, 2006
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 060808-008NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
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
- May 22, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 060523-002HA
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2006 – Jun 30, 2006
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.017 mg/l 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.
-
- Collected
- May 22, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 060523-001TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 551.1
- Result
- 14.1 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 551.1
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 551.1
- Result
- 1.57 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 551.1
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 551.1
- Result
- 15.67 ug/l
- Monitoring period
- Apr 1, 2006 – Jun 30, 2006
-
- Collected
- Apr 17, 2006
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 060418-056CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.005 mg/l Minimum Reporting Level
-
- Collected
- Apr 17, 2006
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 060418-012IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Barium 1010 EPA method 200.8
- Result
- 0.004 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Chromium 1020 EPA method 200.8
- Result
- 0.00187 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Fluoride 1025 EPA method 380-75WE
- Result
- 0.683867 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0002 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- 0.001711 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Uranium-238 4009
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
Routine (10).