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 101–110 of 176 samples, newest first — collected August 24, 2010 to June 20, 2011. The summary above covers all 176.

48 results from the 10 samples listed here: 13 detected, 35 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 101 to 110 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 Jun 20, 2011 Sampling point DS000 Distribution Sample type Routine Lab sample 110621-010PB Laboratory MSDH Lab
0.1939 mg/l , sample collected Jun 20, 2011, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 20, 2011, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2011 – Dec 31, 2013
Collected Jun 20, 2011 Sampling point DS000 Distribution Sample type Routine Lab sample 110621-009PB Laboratory MSDH Lab
0.1894 mg/l , sample collected Jun 20, 2011, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2011 – Dec 31, 2013
0.004 mg/l , sample collected Jun 20, 2011, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2011 – Dec 31, 2013
Collected Jun 20, 2011 Sampling point DS000 Distribution Sample type Routine Lab sample 110621-008PB Laboratory MSDH Lab
0.0302 mg/l , sample collected Jun 20, 2011, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2011 – Dec 31, 2013
0.0016 mg/l , sample collected Jun 20, 2011, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2011 – Dec 31, 2013
Collected Jun 20, 2011 Sampling point DS000 Distribution Sample type Routine Lab sample 110621-007PB Laboratory MSDH Lab
0.2307 mg/l , sample collected Jun 20, 2011, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2011 – Dec 31, 2013
0.0006 mg/l , sample collected Jun 20, 2011, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2011 – Dec 31, 2013
Collected Jun 20, 2011 Sampling point DS000 Distribution Sample type Routine Lab sample 110621-006PB Laboratory MSDH Lab
0.2503 mg/l , sample collected Jun 20, 2011, sampling point DS000	Copper, Free 1022 EPA method 200.8	Jan 1, 2011 – Dec 31, 2013
0.0012 mg/l , sample collected Jun 20, 2011, sampling point DS000	Lead 1030 EPA method 200.8	Jan 1, 2011 – Dec 31, 2013
Collected Apr 6, 2011 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample 110407-077NI Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 6, 2011, sampling point TF101	Nitrate-Nitrite 1038 EPA method 353.2	Jan 1, 2011 – Dec 31, 2011
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 6, 2011, sampling point TF101	Nitrate 1040 EPA method 353.2	Jan 1, 2011 – Dec 31, 2011
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 6, 2011, sampling point TF101	Nitrite 1041 EPA method 353.2	Jan 1, 2011 – Dec 31, 2011
Collected Oct 11, 2010 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample 101012-001VO Laboratory MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	1,2,4-Trichlorobenzene 2378 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Cis-1,2-Dichloroethylene 2380 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Xylenes, Total 2955 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Dichloromethane 2964 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	O-Dichlorobenzene 2968 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	P-Dichlorobenzene 2969 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Vinyl Chloride 2976 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	1,1-Dichloroethylene 2977 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Trans-1,2-Dichloroethylene 2979 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	1,2-Dichloroethane 2980 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	1,1,1-Trichloroethane 2981 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Carbon Tetrachloride 2982 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	1,2-Dichloropropane 2983 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Trichloroethylene 2984 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	1,1,2-Trichloroethane 2985 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Tetrachloroethylene 2987 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Chlorobenzene 2989 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Benzene 2990 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Toluene 2991 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Ethylbenzene 2992 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 11, 2010, sampling point TF101	Styrene 2996 EPA method 524.2	Jan 1, 2005 – Dec 31, 2010
Collected Sep 29, 2010 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample 100930-039NI Laboratory MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Sep 29, 2010, sampling point TF101	Nitrate-Nitrite 1038 EPA method 353.2	Jan 1, 2010 – Dec 31, 2010
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Sep 29, 2010, sampling point TF101	Nitrate 1040 EPA method 353.2	Jan 1, 2010 – Dec 31, 2010
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Sep 29, 2010, sampling point TF101	Nitrite 1041 EPA method 353.2	Jan 1, 2010 – Dec 31, 2010
Collected Aug 24, 2010 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample 100825-004TH Laboratory MSDH Lab
2.81 ug/l , sample collected Aug 24, 2010, sampling point MRT000	Chloroform 2941 EPA method 524.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 24, 2010, sampling point MRT000	Bromoform 2942 EPA method 524.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 24, 2010, sampling point MRT000	Bromodichloromethane 2943 EPA method 524.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 24, 2010, sampling point MRT000	Dibromochloromethane 2944 EPA method 524.2	Not recorded
2.81 ug/l , sample collected Aug 24, 2010, sampling point MRT000	TTHM 2950 EPA method 524.2	Jan 1, 2010 – Dec 31, 2010
Collected Aug 24, 2010 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample 100825-004HA Laboratory MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 24, 2010, sampling point MRT000	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
0.003 mg/l , sample collected Aug 24, 2010, 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 24, 2010, 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 24, 2010, sampling point MRT000	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 24, 2010, 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 Aug 24, 2010, sampling point MRT000	Total Haloacetic Acids (Haa5) 2456	Jan 1, 2010 – Dec 31, 2010

Collected
Jun 20, 2011

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
110621-010PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2011 – Dec 31, 2013
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.1939 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Jun 20, 2011

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
110621-009PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2011 – Dec 31, 2013
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.1894 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.004 mg/l
Collected
Jun 20, 2011

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
110621-008PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2011 – Dec 31, 2013
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0302 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0016 mg/l
Collected
Jun 20, 2011

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
110621-007PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2011 – Dec 31, 2013
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.2307 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0006 mg/l
Collected
Jun 20, 2011

Sampling point
DS000 Distribution

Sample type
Routine

Lab sample
110621-006PB

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2011 – Dec 31, 2013
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.2503 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.0012 mg/l
Collected
Apr 6, 2011

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
110407-077NI

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2011 – Dec 31, 2011
- 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
Oct 11, 2010

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
101012-001VO

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2005 – Dec 31, 2010
- 1,2,4-Trichlorobenzene 2378 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Cis-1,2-Dichloroethylene 2380 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Xylenes, Total 2955 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Dichloromethane 2964 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- O-Dichlorobenzene 2968 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- P-Dichlorobenzene 2969 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Vinyl Chloride 2976 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- 1,1-Dichloroethylene 2977 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Trans-1,2-Dichloroethylene 2979 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- 1,2-Dichloroethane 2980 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- 1,1,1-Trichloroethane 2981 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Carbon Tetrachloride 2982 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- 1,2-Dichloropropane 2983 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Trichloroethylene 2984 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- 1,1,2-Trichloroethane 2985 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Tetrachloroethylene 2987 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Chlorobenzene 2989 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Benzene 2990 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Toluene 2991 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Ethylbenzene 2992 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Styrene 2996 EPA method 524.2
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
Collected
Sep 29, 2010

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
100930-039NI

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2010 – Dec 31, 2010
- Nitrate-Nitrite 1038 EPA method 353.2
  
  Result
  Not detected below 0.25 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method 353.2
  
  Result
  Not detected below 0.2 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method 353.2
  
  Result
  Not detected below 0.05 mg/l Minimum Reporting Level
Collected
Aug 24, 2010

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
100825-004TH

Laboratory
MSDH Lab
- Chloroform 2941 EPA method 524.2
  
  Result
  2.81 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
  2.81 ug/l
  
  Monitoring period
  Jan 1, 2010 – Dec 31, 2010
Collected
Aug 24, 2010

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
100825-004HA

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
  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
  Jan 1, 2010 – Dec 31, 2010

Routine (10).