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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 61–70 of 252 samples, newest first — collected June 19, 2019 to January 20, 2021. The summary above covers all 252.

39 results from the 10 samples listed here: 14 detected, 25 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.

Units in this table

Sodium is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Chemical and radiological sample results for Blackjack Development Assn, every result from 61 to 70 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
Jan 20, 2021 14:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NA-210121-025
Laboratory
MSDH Lab
3.81 mg/l , sample collected Jan 20, 2021 14:00, sampling point TF101 Sodium 1052 EPA method 200.7 Not recorded
Collected
Jan 20, 2021 14:30
Sampling point
TF102
Sample type
Routine
Lab sample
NI-210121-052
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 20, 2021 14:30, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 20, 2021 14:30, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 20, 2021 14:30, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Collected
Jan 20, 2021 14:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-210121-051
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 20, 2021 14:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 20, 2021 14:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 20, 2021 14:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Collected
Mar 30, 2020 15:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
200331-008IN
Laboratory
MSDH Lab
0.0008 mg/l , sample collected Mar 30, 2020 15:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0405 mg/l , sample collected Mar 30, 2020 15:00, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:00, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0024 mg/l , sample collected Mar 30, 2020 15:00, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.124 mg/l , sample collected Mar 30, 2020 15:00, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:00, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0016 mg/l , sample collected Mar 30, 2020 15:00, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:00, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:00, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:00, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:00, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Mar 30, 2020 15:15
Sampling point
TF102
Sample type
Routine
Lab sample
200331-007IN
Laboratory
MSDH Lab
0.0008 mg/l , sample collected Mar 30, 2020 15:15, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0415 mg/l , sample collected Mar 30, 2020 15:15, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:15, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0028 mg/l , sample collected Mar 30, 2020 15:15, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.126 mg/l , sample collected Mar 30, 2020 15:15, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:15, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0017 mg/l , sample collected Mar 30, 2020 15:15, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:15, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:15, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:15, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 30, 2020 15:15, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jan 13, 2020 14:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
200114-047NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 13, 2020 14:15, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 13, 2020 14:15, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 13, 2020 14:15, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Collected
Jan 13, 2020 14:00
Sampling point
TF102
Sample type
Routine
Lab sample
200114-046NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 13, 2020 14:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 13, 2020 14:00, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 13, 2020 14:00, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Collected
Sep 17, 2019 10:10
Sampling point
TF102
Sample type
Routine
Lab sample
680-174320-42
Laboratory
Test America-Savannah
3300 ug/l , sample collected Sep 17, 2019 10:10, sampling point TF102 Sodium 1052 EPA method 200.7 Not recorded
Collected
Sep 17, 2019 10:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
680-174320-41
Laboratory
Test America-Savannah
10000 ug/l , sample collected Sep 17, 2019 10:00, sampling point TF101 Sodium 1052 EPA method 200.7 Not recorded
Collected
Jun 19, 2019 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
190620-077PB
Laboratory
MSDH Lab
0.0073 mg/l , sample collected Jun 19, 2019 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 19, 2019 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019

Routine (10).