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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 161–170 of 207 samples, newest first — collected August 16, 2007 to December 1, 2008. The summary above covers all 207.

23 results from the 10 samples listed here: 15 detected, 8 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 161 to 170 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
Dec 1, 2008
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
081202-012NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Dec 1, 2008, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Dec 1, 2008, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Dec 1, 2008, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
Sep 11, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070912-008HA
Laboratory
MSDH Lab
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Sep 11, 2007, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2005 – Dec 31, 2007
Collected
Sep 11, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070912-008TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 11, 2007, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 11, 2007, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 11, 2007, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 11, 2007, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Sep 11, 2007, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2005 – Dec 31, 2007
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-211PB
Laboratory
MSDH Lab
0.0175 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0016 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-330PB
Laboratory
MSDH Lab
0.0408 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.009 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-214PB
Laboratory
MSDH Lab
0.0133 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.004 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-213PB
Laboratory
MSDH Lab
0.011 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0011 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-217PB
Laboratory
MSDH Lab
0.0325 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0033 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-233PB
Laboratory
MSDH Lab
0.0188 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.014 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-075PB
Laboratory
MSDH Lab
0.0175 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0026 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008

Routine (10).