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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; the list of samples further down is narrowed.

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

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The table below lists 1–10 of 20 samples, newest first — collected June 10, 2025 to December 10, 2025. The summary above covers all 20.

38 results from the 10 samples listed here: 10 detected, 28 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.

We withheld the location of 9 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for Blackjack Development Assn, every result from 1 to 10 of 20 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
Dec 10, 2025 09:30
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-175067-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 10, 2025 09:30, sampling point SM2 TTHM 2950 EPA method 524.2 Not recorded
Collected
Oct 8, 2025 10:15
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-167231-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Oct 8, 2025 10:15, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 8, 2025 10:15, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 8, 2025 10:15, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 8, 2025 10:15, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 8, 2025 10:15, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Oct 8, 2025 10:15, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
0.66 ug/l , sample collected Oct 8, 2025 10:15, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 8, 2025 10:15, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 8, 2025 10:15, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 8, 2025 10:15, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
0.66 ug/l , sample collected Oct 8, 2025 10:15, sampling point SM2 TTHM 2950 EPA method 524.2 Not recorded
Collected
Jun 10, 2025 07:30
Sampling point
LC004 Location withheld
Sample type
Routine
Lab sample
PB-250611-007
Laboratory
MSDH Lab
0.0708 mg/l , sample collected Jun 10, 2025 07:30, sampling point LC004 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 10, 2025 07:30, sampling point LC004 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 10, 2025 07:45
Sampling point
LC010 Location withheld
Sample type
Routine
Lab sample
PB-250611-001
Laboratory
MSDH Lab
0.0718 mg/l , sample collected Jun 10, 2025 07:45, sampling point LC010 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 10, 2025 07:45, sampling point LC010 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 10, 2025 08:00
Sampling point
LC006 Location withheld
Sample type
Routine
Lab sample
PB-250611-005
Laboratory
MSDH Lab
0.0703 mg/l , sample collected Jun 10, 2025 08:00, sampling point LC006 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 10, 2025 08:00, sampling point LC006 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 10, 2025 08:30
Sampling point
LC0021 Location withheld
Sample type
Routine
Lab sample
PB-250611-008
Laboratory
MSDH Lab
0.0526 mg/l , sample collected Jun 10, 2025 08:30, sampling point LC0021 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 10, 2025 08:30, sampling point LC0021 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 10, 2025 08:45
Sampling point
LC002 Location withheld
Sample type
Routine
Lab sample
PB-250611-004
Laboratory
MSDH Lab
0.0094 mg/l , sample collected Jun 10, 2025 08:45, sampling point LC002 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 10, 2025 08:45, sampling point LC002 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 10, 2025 09:00
Sampling point
LC003 Location withheld
Sample type
Routine
Lab sample
PB-250611-009
Laboratory
MSDH Lab
0.0019 mg/l , sample collected Jun 10, 2025 09:00, sampling point LC003 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 10, 2025 09:00, sampling point LC003 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 10, 2025 08:15
Sampling point
LC008 Location withheld
Sample type
Routine
Lab sample
PB-250611-003
Laboratory
MSDH Lab
0.0042 mg/l , sample collected Jun 10, 2025 08:15, sampling point LC008 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 10, 2025 08:15, sampling point LC008 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 10, 2025 08:00
Sampling point
LC011 Location withheld
Sample type
Routine
Lab sample
PB-250611-002
Laboratory
MSDH Lab
0.0079 mg/l , sample collected Jun 10, 2025 08:00, sampling point LC011 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 10, 2025 08:00, sampling point LC011 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025

Routine (10).