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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

MS0700014 , Three Forks Water Association

22 of the 57 analytes this system has been tested for have been detected at least once, across 207 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 207 samples on record, detections range from October 29, 2003 to July 20, 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 Three Forks Water Association, 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 60 of 60 results Aug 16, 2007 Aug 10, 2023
Lead 1030 Inorganic Chemical 41 of 60 results Aug 16, 2007 Aug 10, 2023
Barium 1010 Inorganic Chemical 20 of 20 results Oct 29, 2003 Mar 31, 2025
Fluoride 1025 Inorganic Chemical 20 of 20 results Oct 29, 2003 Mar 31, 2025
Nickel 1036 Inorganic Chemical 15 of 20 results Mar 31, 2004 Mar 31, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 21, 2011 Jul 11, 2012
Chromium 1020 Inorganic Chemical 9 of 20 results Mar 31, 2004 Mar 31, 2025
Sodium 1052 Inorganic Chemical 6 of 6 results Oct 7, 2019 Jul 20, 2026
TTHM 2950 Organic Chemical 5 of 17 results Sep 11, 2007 Nov 25, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 4 of 18 results Jul 15, 2010 Nov 25, 2024
Sulfate 1055 Inorganic Chemical 4 of 4 results Oct 29, 2003 Mar 31, 2004
Dichloroacetic Acid 2451 Organic Chemical 3 of 13 results Oct 29, 2020 Nov 25, 2024
Chloroform 2941 Organic Chemical 3 of 13 results Sep 13, 2016 Nov 25, 2024
Nitrite 1041 Inorganic Chemical 3 of 43 results May 20, 2020 Apr 6, 2022
Nitrate-Nitrite 1038 Inorganic Chemical 3 of 43 results Apr 4, 2011 May 20, 2020
Trichloroacetic Acid 2452 Organic Chemical 2 of 13 results Nov 25, 2024 Nov 25, 2024
Bromodichloromethane 2943 Organic Chemical 2 of 13 results Nov 25, 2024 Nov 25, 2024
Dibromochloromethane 2944 Organic Chemical 2 of 13 results Nov 25, 2024 Nov 25, 2024
Nitrate 1040 Inorganic Chemical 2 of 43 results Apr 4, 2011 Apr 4, 2011
Selenium 1045 Inorganic Chemical 2 of 20 results Mar 1, 2010 Mar 1, 2010
Cadmium 1015 Inorganic Chemical 2 of 20 results Mar 31, 2004 Mar 31, 2004
Monobromoacetic Acid 2453 Organic Chemical 1 of 13 results Oct 29, 2020 Oct 29, 2020

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 71–80 of 207 samples, newest first — collected August 16, 2017 to May 15, 2019. The summary above covers all 207.

31 results from the 10 samples listed here: 16 detected, 15 not detected. Across the whole record it is 219 of 1,035. 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 Three Forks Water Association, every result from 71 to 80 of 207 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 15, 2019 01:40
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
190516-014IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2019 01:40, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.1743 mg/l , sample collected May 15, 2019 01:40, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2019 01:40, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0011 mg/l , sample collected May 15, 2019 01:40, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.109 mg/l , sample collected May 15, 2019 01:40, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2019 01:40, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0016 mg/l , sample collected May 15, 2019 01:40, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2019 01:40, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2019 01:40, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2019 01:40, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2019 01:40, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Apr 4, 2018 12:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180405-015NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 4, 2018 12:45, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 4, 2018 12:45, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 4, 2018 12:45, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Apr 4, 2018 12:50
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
180405-006NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 4, 2018 12:50, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 4, 2018 12:50, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 4, 2018 12:50, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Aug 16, 2017 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170817-092PB
Laboratory
MSDH Lab
0.0341 mg/l , sample collected Aug 16, 2017 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.001 mg/l , sample collected Aug 16, 2017 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 16, 2017 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170817-091PB
Laboratory
MSDH Lab
0.0296 mg/l , sample collected Aug 16, 2017 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0011 mg/l , sample collected Aug 16, 2017 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 16, 2017 06:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170817-090PB
Laboratory
MSDH Lab
0.0051 mg/l , sample collected Aug 16, 2017 06:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 16, 2017 06:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 16, 2017 06:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170817-089PB
Laboratory
MSDH Lab
0.0105 mg/l , sample collected Aug 16, 2017 06:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0014 mg/l , sample collected Aug 16, 2017 06:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 16, 2017 06:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170817-088PB
Laboratory
MSDH Lab
0.1139 mg/l , sample collected Aug 16, 2017 06:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0026 mg/l , sample collected Aug 16, 2017 06:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 16, 2017 05:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170817-087PB
Laboratory
MSDH Lab
0.051 mg/l , sample collected Aug 16, 2017 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0017 mg/l , sample collected Aug 16, 2017 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 16, 2017 05:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170817-086PB
Laboratory
MSDH Lab
0.0058 mg/l , sample collected Aug 16, 2017 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 16, 2017 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017

Routine (10).