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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 111–120 of 207 samples, newest first — collected July 10, 2012 to October 2, 2013. The summary above covers all 207.

52 results from the 10 samples listed here: 9 detected, 43 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 111 to 120 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
Oct 2, 2013 01:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
131003-005CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 2, 2013 01:30, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013
Collected
Sep 11, 2013 01:50
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
130912-010HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2011 – Dec 31, 2013
Collected
Sep 11, 2013 01:50
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
130912-010TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 4 ug/l Minimum Reporting Level , sample collected Sep 11, 2013 01:50, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2011 – Dec 31, 2013
Collected
May 22, 2013 02:15
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
130523-044IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:15, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.1708 mg/l , sample collected May 22, 2013 02:15, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:15, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:15, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.15 mg/l , sample collected May 22, 2013 02:15, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:15, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0078 mg/l , sample collected May 22, 2013 02:15, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:15, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:15, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:15, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:15, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
May 22, 2013 02:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130523-043IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.1663 mg/l , sample collected May 22, 2013 02:00, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:00, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:00, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.149 mg/l , sample collected May 22, 2013 02:00, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:00, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.007 mg/l , sample collected May 22, 2013 02:00, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:00, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:00, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:00, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 22, 2013 02:00, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
May 15, 2013 03:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
130516-014NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 15, 2013 03:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2013 – Dec 31, 2013
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 15, 2013 03:00, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2013 – Dec 31, 2013
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 15, 2013 03:00, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2013 – Dec 31, 2013
Collected
May 15, 2013 03:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130516-013NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 15, 2013 03:15, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2013 – Dec 31, 2013
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 15, 2013 03:15, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2013 – Dec 31, 2013
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 15, 2013 03:15, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2013 – Dec 31, 2013
Collected
Jul 11, 2012 01:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
201211300127
Laboratory
Radiation Safety Engineering
1.1 pci/l , sample collected Jul 11, 2012 01:30, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.38 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 01:30, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.252 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 01:30, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.38 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 01:30, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 11, 2012 01:55
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
201211300126
Laboratory
Radiation Safety Engineering
0.5 pci/l , sample collected Jul 11, 2012 01:55, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 01:55, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.215 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 01:55, sampling point TF102 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 01:55, sampling point TF102 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 10, 2012 13:20
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120711-021
Laboratory
Radiation Safety Engineering
1.1 pci/l , sample collected Jul 10, 2012 13:20, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.38 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 13:20, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.252 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 13:20, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.38 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 13:20, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012

Routine (10).