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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 81–89 of 89 samples, newest first — collected August 25, 2014 to December 8, 2014. The summary above covers all 89.

55 results from the 9 samples listed here: 9 detected, 46 not detected. 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 81 to 89 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
Dec 8, 2014 12:15
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
201412110597GA
Laboratory
Radiation Safety Engineering
1.6 pci/l , sample collected Dec 8, 2014 12:15, sampling point TF081 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Oct 1, 2014 – Dec 31, 2014
Collected
Dec 8, 2014 12:15
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
201412110597
Laboratory
Radiation Safety Engineering
0.8 pci/l , sample collected Dec 8, 2014 12:15, sampling point TF081 Combined Radium (-226 & -228) 4010 Not recorded
0.8 pci/l , sample collected Dec 8, 2014 12:15, sampling point TF081 Radium-226 4020 EPA method 903.1 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 pci/l Minimum Reporting Level , sample collected Dec 8, 2014 12:15, sampling point TF081 Radium-228 4030 EPA method 904 Oct 1, 2014 – Dec 31, 2014
Collected
Dec 8, 2014 12:00
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
141209-010RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 8, 2014 12:00, sampling point TF081 Combined Uranium 4006 EPA method 200.8 Oct 1, 2014 – Dec 31, 2014
Collected
Nov 17, 2014 12:00
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
141118-008NI
Laboratory
MSDH Lab
0.45 mg/l , sample collected Nov 17, 2014 12:00, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
0.45 mg/l , sample collected Nov 17, 2014 12:00, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 17, 2014 12:00, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Collected
Oct 27, 2014 12:00
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
141028-002VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Xylenes, Total 2955 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Dichloromethane 2964 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 O-Dichlorobenzene 2968 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 P-Dichlorobenzene 2969 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Vinyl Chloride 2976 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 1,1-Dichloroethylene 2977 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 1,2-Dichloroethane 2980 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 1,1,1-Trichloroethane 2981 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Carbon Tetrachloride 2982 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 1,2-Dichloropropane 2983 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Trichloroethylene 2984 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 1,1,2-Trichloroethane 2985 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Tetrachloroethylene 2987 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Chlorobenzene 2989 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Benzene 2990 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Toluene 2991 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Ethylbenzene 2992 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 27, 2014 12:00, sampling point TF081 Styrene 2996 EPA method 524.2 Oct 1, 2014 – Dec 31, 2014
Collected
Sep 17, 2014 08:00
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
201409230134-GA
Laboratory
Radiation Safety Engineering
1.6 pci/l 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 17, 2014 08:00, sampling point TF081 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Jul 1, 2014 – Sep 30, 2014
Collected
Sep 17, 2014 08:00
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
201409230134
Laboratory
Radiation Safety Engineering
0.9 pci/l The agency recorded which kind of limit this result was below, but stored nothing 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 17, 2014 08:00, sampling point TF081 Combined Radium (-226 & -228) 4010 Not recorded
0.5 pci/l 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 17, 2014 08:00, sampling point TF081 Radium-226 4020 EPA method 903.1 Jul 1, 2014 – Sep 30, 2014
0.4 pci/l 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 17, 2014 08:00, sampling point TF081 Radium-228 4030 EPA method 904 Jul 1, 2014 – Sep 30, 2014
Collected
Sep 15, 2014 12:10
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
140916-001RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 15, 2014 12:10, sampling point TF081 Combined Uranium 4006 EPA method 200.8 Jul 1, 2014 – Sep 30, 2014
Collected
Aug 25, 2014 12:35
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
140826-014VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Xylenes, Total 2955 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Dichloromethane 2964 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 O-Dichlorobenzene 2968 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 P-Dichlorobenzene 2969 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Vinyl Chloride 2976 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 1,1-Dichloroethylene 2977 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 1,2-Dichloroethane 2980 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 1,1,1-Trichloroethane 2981 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Carbon Tetrachloride 2982 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 1,2-Dichloropropane 2983 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Trichloroethylene 2984 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 1,1,2-Trichloroethane 2985 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Tetrachloroethylene 2987 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Chlorobenzene 2989 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Benzene 2990 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Toluene 2991 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Ethylbenzene 2992 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 25, 2014 12:35, sampling point TF081 Styrene 2996 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014

Routine (9).