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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

MS0050016 , Blackjack Development Assn

22 of the 57 analytes this system has been tested for have been detected at least once, across 252 samples on record.

The other 35 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 252 samples on record, detections range from May 26, 1994 to October 8, 2025. 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 Blackjack Development Assn, 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 78 of 107 results May 26, 1994 Jun 10, 2025
Lead 1030 Inorganic Chemical 33 of 107 results May 26, 1994 Jun 19, 2019
Barium 1010 Inorganic Chemical 19 of 19 results Jan 29, 2002 Jan 21, 2025
Fluoride 1025 Inorganic Chemical 18 of 19 results Jan 12, 2004 Jan 21, 2025
Nickel 1036 Inorganic Chemical 17 of 19 results Jan 29, 2002 Jan 21, 2025
Chromium 1020 Inorganic Chemical 11 of 19 results Jan 29, 2002 Mar 30, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 5, 2011 Jul 10, 2012
TTHM 2950 Organic Chemical 9 of 20 results Jun 25, 2007 Oct 8, 2025
Arsenic 1005 Inorganic Chemical 9 of 19 results Mar 4, 2015 Jan 21, 2025
Chloroform 2941 Organic Chemical 7 of 16 results Aug 4, 2014 Oct 8, 2025
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 17, 2019 Oct 14, 2024
Combined Radium (-226 & -228) 4010 Radionuclide 5 of 10 results Dec 5, 2011 Jul 10, 2012
Radium-226 4020 Radionuclide 5 of 10 results Dec 5, 2011 Jul 10, 2012
Bromodichloromethane 2943 Organic Chemical 3 of 16 results May 20, 2024 Aug 5, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 3 of 22 results Jun 25, 2007 Jan 31, 2022
Sulfate 1055 Inorganic Chemical 2 of 2 results Jan 29, 2002 Jan 12, 2004
Cyanide 1024 Inorganic Chemical 1 of 17 results Apr 13, 2021 Apr 13, 2021
Monochloroacetic Acid 2450 Organic Chemical 1 of 17 results Aug 29, 2017 Aug 29, 2017
Dichloroacetic Acid 2451 Organic Chemical 1 of 17 results Aug 29, 2017 Aug 29, 2017
Monobromoacetic Acid 2453 Organic Chemical 1 of 17 results Aug 29, 2017 Aug 29, 2017
Cadmium 1015 Inorganic Chemical 1 of 19 results Feb 14, 2005 Feb 14, 2005
Selenium 1045 Inorganic Chemical 1 of 19 results Feb 14, 2005 Feb 14, 2005

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 181–190 of 252 samples, newest first — collected July 9, 2007 to March 10, 2008. The summary above covers all 252.

35 results from the 10 samples listed here: 13 detected, 22 not detected. Across the whole record it is 241 of 1,024. 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 Blackjack Development Assn, every result from 181 to 190 of 252 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
Mar 10, 2008
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
080311-012IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 10, 2008, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.07279 mg/l , sample collected Mar 10, 2008, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 10, 2008, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 10, 2008, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.114 mg/l , sample collected Mar 10, 2008, sampling point TF101 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 10, 2008, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.007136 mg/l , sample collected Mar 10, 2008, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 10, 2008, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 10, 2008, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 10, 2008, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 10, 2008, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Mar 10, 2008
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
080311-004CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Mar 10, 2008, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Mar 10, 2008
Sampling point
TF102
Sample type
Routine
Lab sample
080311-003CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Mar 10, 2008, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Dec 3, 2007
Sampling point
TF102
Sample type
Routine
Lab sample
071204-027IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 3, 2007, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.049581 mg/l , sample collected Dec 3, 2007, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Dec 3, 2007, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 3, 2007, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.115 mg/l , sample collected Dec 3, 2007, sampling point TF102 Fluoride 1025 EPA method 380-75WE Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Dec 3, 2007, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.012086 mg/l , sample collected Dec 3, 2007, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 3, 2007, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 3, 2007, sampling point TF102 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 Dec 3, 2007, sampling point TF102 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 Dec 3, 2007, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Collected
Dec 3, 2007
Sampling point
TF102
Sample type
Routine
Lab sample
071204-005CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Dec 3, 2007, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Jul 9, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070711-017PB
Laboratory
MSDH Lab
0.096 mg/l , sample collected Jul 9, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 9, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Jul 9, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070711-014PB
Laboratory
MSDH Lab
0.0063 mg/l , sample collected Jul 9, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 9, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Jul 9, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070711-019PB
Laboratory
MSDH Lab
0.0137 mg/l , sample collected Jul 9, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0006 mg/l , sample collected Jul 9, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Jul 9, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070711-016PB
Laboratory
MSDH Lab
0.0091 mg/l , sample collected Jul 9, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0005 mg/l , sample collected Jul 9, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Jul 9, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070711-015PB
Laboratory
MSDH Lab
0.0066 mg/l , sample collected Jul 9, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 9, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008

Routine (10).