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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.

Every analyte ever detected for Delta Branch Experiment Sta, with how many results found it and when it was first and last detected. Covers the whole record, not only 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 41–50 of 176 samples, newest first — collected May 21, 2019 to May 21, 2019. The summary above covers all 176.

20 results from the 10 samples listed here: 15 detected, 5 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.

Chemical and radiological sample results for Delta Branch Experiment Sta, every result from 41 to 50 of 176 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
May 21, 2019 07:19
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190524-010PB
Laboratory
MSDH Lab
0.0213 mg/l , sample collected May 21, 2019 07:19, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 07:19, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Collected
May 21, 2019 07:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190524-009PB
Laboratory
MSDH Lab
0.1138 mg/l , sample collected May 21, 2019 07:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
0.0051 mg/l , sample collected May 21, 2019 07:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Collected
May 21, 2019 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190524-008PB
Laboratory
MSDH Lab
0.0274 mg/l , sample collected May 21, 2019 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Collected
May 21, 2019 08:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190524-007PB
Laboratory
MSDH Lab
0.0343 mg/l , sample collected May 21, 2019 08:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
0.0012 mg/l , sample collected May 21, 2019 08:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Collected
May 21, 2019
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190524-006PB
Laboratory
MSDH Lab
0.106 mg/l , sample collected May 21, 2019, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
0.0031 mg/l , sample collected May 21, 2019, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Collected
May 21, 2019 06:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190524-005PB
Laboratory
MSDH Lab
0.022 mg/l , sample collected May 21, 2019 06:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 06:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Collected
May 21, 2019 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190524-004PB
Laboratory
MSDH Lab
0.1419 mg/l , sample collected May 21, 2019 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
0.0031 mg/l , sample collected May 21, 2019 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Collected
May 21, 2019 07:19
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190524-003PB
Laboratory
MSDH Lab
0.0241 mg/l , sample collected May 21, 2019 07:19, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 07:19, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Collected
May 21, 2019 07:01
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190524-002PB
Laboratory
MSDH Lab
0.1179 mg/l , sample collected May 21, 2019 07:01, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
0.0045 mg/l , sample collected May 21, 2019 07:01, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Collected
May 21, 2019 07:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190524-001PB
Laboratory
MSDH Lab
0.0725 mg/l , sample collected May 21, 2019 07:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2019 07:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Jun 30, 2019

Routine (10).