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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

MS0360069 , Twelve Oaks Water System

11 of the 55 analytes this system has been tested for have been detected at least once, across 89 samples on record.

The other 44 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 89 samples on record, detections range from September 17, 2014 to July 6, 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 Twelve Oaks Water System, 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 40 of 40 results Oct 26, 2015 Sep 17, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 13 of 13 results Nov 17, 2014 Jul 6, 2026
Nitrate 1040 Inorganic Chemical 13 of 13 results Nov 17, 2014 Jul 6, 2026
Lead 1030 Inorganic Chemical 7 of 40 results Oct 26, 2015 Sep 17, 2025
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 18, 2019 Feb 25, 2025
Barium 1010 Inorganic Chemical 3 of 3 results Apr 13, 2015 Feb 5, 2024
Chromium 1020 Inorganic Chemical 3 of 3 results Apr 13, 2015 Feb 5, 2024
Gross Alpha, Incl. Radon & U 4002 Radionuclide 2 of 2 results Sep 17, 2014 Dec 8, 2014
Combined Radium (-226 & -228) 4010 Radionuclide 2 of 2 results Sep 17, 2014 Dec 8, 2014
Radium-226 4020 Radionuclide 2 of 2 results Sep 17, 2014 Dec 8, 2014
Radium-228 4030 Radionuclide 1 of 2 results Sep 17, 2014 Sep 17, 2014

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 89 samples, newest first — collected October 26, 2015 to August 8, 2016. The summary above covers all 89.

21 results from the 10 samples listed here: 15 detected, 6 not detected. Across the whole record it is 89 of 427. 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 Twelve Oaks Water System, every result from 61 to 70 of 89 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
Aug 8, 2016 07:30
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
160810-024PB
Laboratory
MSDH Lab
0.0294 mg/l , sample collected Aug 8, 2016 07:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2016 – Dec 31, 2016
0.0009 mg/l , sample collected Aug 8, 2016 07:30, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2016 – Dec 31, 2016
Collected
Aug 8, 2016 10:42
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
160810-023PB
Laboratory
MSDH Lab
0.1024 mg/l , sample collected Aug 8, 2016 10:42, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2016 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 8, 2016 10:42, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2016 – Dec 31, 2016
Collected
May 16, 2016 08:30
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
160517-015PB
Laboratory
MSDH Lab
0.0243 mg/l , sample collected May 16, 2016 08:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 16, 2016 08:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 16, 2016 05:10
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
160517-014PB
Laboratory
MSDH Lab
0.0151 mg/l , sample collected May 16, 2016 05:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 16, 2016 05:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 16, 2016 08:30
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
160517-013PB
Laboratory
MSDH Lab
0.0196 mg/l , sample collected May 16, 2016 08:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 16, 2016 08:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 16, 2016 05:00
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
160517-012PB
Laboratory
MSDH Lab
0.0254 mg/l , sample collected May 16, 2016 05:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 16, 2016 05:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 16, 2016 08:00
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
160517-011PB
Laboratory
MSDH Lab
0.0151 mg/l , sample collected May 16, 2016 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
0.0008 mg/l , sample collected May 16, 2016 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
Apr 18, 2016 13:00
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
160419-038NI
Laboratory
MSDH Lab
0.64 mg/l , sample collected Apr 18, 2016 13:00, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
0.63 mg/l , sample collected Apr 18, 2016 13:00, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 18, 2016 13:00, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Oct 26, 2015 19:00
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
151030-015PB
Laboratory
MSDH Lab
0.0368 mg/l , sample collected Oct 26, 2015 19:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2015 – Dec 31, 2015
0.0008 mg/l , sample collected Oct 26, 2015 19:00, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2015 – Dec 31, 2015
Collected
Oct 26, 2015 07:00
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
151030-014PB
Laboratory
MSDH Lab
0.0952 mg/l , sample collected Oct 26, 2015 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2015 – Dec 31, 2015
0.0007 mg/l , sample collected Oct 26, 2015 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2015 – Dec 31, 2015

Routine (10).