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 121–130 of 176 samples, newest first — collected October 15, 2007 to November 10, 2008. The summary above covers all 176.
48 results from the 10 samples listed here: 23 detected, 25 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 |
|---|---|---|
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Nov 10, 2008, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.002 mg/l , sample collected Nov 10, 2008, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 10, 2008, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 10, 2008, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 10, 2008, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. , sample collected Nov 10, 2008, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Oct 1, 2008 – Dec 31, 2008 |
|
||
| 1.95 ug/l , sample collected Sep 9, 2008, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 9, 2008, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 9, 2008, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 9, 2008, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 1.95 ug/l , sample collected Sep 9, 2008, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jul 1, 2008 – Sep 30, 2008 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Sep 9, 2008, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.002 mg/l , sample collected Sep 9, 2008, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 9, 2008, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 9, 2008, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 9, 2008, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. , sample collected Sep 9, 2008, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jul 1, 2008 – Sep 30, 2008 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jul 28, 2008, sampling point TF101 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2008 – Dec 31, 2008 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jul 28, 2008, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Jan 1, 2008 – Dec 31, 2008 |
| 0.02 mg/l , sample collected Jul 28, 2008, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Jan 1, 2008 – Dec 31, 2008 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jun 3, 2008, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.003 mg/l , sample collected Jun 3, 2008, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.001 mg/l , sample collected Jun 3, 2008, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 3, 2008, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 3, 2008, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Jun 3, 2008, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Apr 1, 2008 – Jun 30, 2008 |
|
||
| 4.08 ug/l , sample collected Jun 3, 2008, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 3, 2008, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 3, 2008, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 3, 2008, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 4.08 ug/l , sample collected Jun 3, 2008, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Apr 1, 2008 – Jun 30, 2008 |
|
||
| 20.7 ug/l , sample collected Feb 26, 2008, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 26, 2008, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 5.15 ug/l , sample collected Feb 26, 2008, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 1.58 ug/l , sample collected Feb 26, 2008, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 27.43 ug/l , sample collected Feb 26, 2008, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2008 – Mar 31, 2008 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Feb 26, 2008, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.01 mg/l , sample collected Feb 26, 2008, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.005 mg/l , sample collected Feb 26, 2008, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 26, 2008, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 26, 2008, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.015 mg/l , sample collected Feb 26, 2008, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2008 – Mar 31, 2008 |
|
||
| 0.0821 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 Oct 15, 2007, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2007 – Dec 31, 2007 |
|
||
| 79.8 ug/l , sample collected Oct 15, 2007, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 15, 2007, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 26.4 ug/l , sample collected Oct 15, 2007, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 7.46 ug/l , sample collected Oct 15, 2007, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 113.66 ug/l , sample collected Oct 15, 2007, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Oct 1, 2007 – Dec 31, 2007 |
-
- Collected
- Nov 10, 2008
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 081111-001HA
- 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
- 0.002 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 mg/l This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here.
- Monitoring period
- Oct 1, 2008 – Dec 31, 2008
-
- Collected
- Sep 9, 2008
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 080910-003TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 1.95 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
- 1.95 ug/l
- Monitoring period
- Jul 1, 2008 – Sep 30, 2008
-
- Collected
- Sep 9, 2008
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 080910-003HA
- 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
- 0.002 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 mg/l This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here.
- Monitoring period
- Jul 1, 2008 – Sep 30, 2008
-
- Collected
- Jul 28, 2008
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 080729-054NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2008 – Dec 31, 2008
-
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
- 0.02 mg/l
-
- Collected
- Jun 3, 2008
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 080604-001HA
- 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
- 0.003 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.001 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
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- Not detected below 0.006 mg/l Minimum Reporting Level
- Monitoring period
- Apr 1, 2008 – Jun 30, 2008
-
- Collected
- Jun 3, 2008
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 080604-011TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 4.08 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
- 4.08 ug/l
- Monitoring period
- Apr 1, 2008 – Jun 30, 2008
-
- Collected
- Feb 26, 2008
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 080227-009TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 20.7 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
- 5.15 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
- 27.43 ug/l
- Monitoring period
- Jan 1, 2008 – Mar 31, 2008
-
- Collected
- Feb 26, 2008
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 080227-009HA
- 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
- 0.01 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.005 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
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.015 mg/l
- Monitoring period
- Jan 1, 2008 – Mar 31, 2008
-
- Collected
- Oct 15, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 071016-007HA
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2007 – Dec 31, 2007
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.0821 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
- Oct 15, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 071016-007TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 79.8 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
- 26.4 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 7.46 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 113.66 ug/l
- Monitoring period
- Oct 1, 2007 – Dec 31, 2007
Routine (10).