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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 71–80 of 89 samples, newest first — collected March 9, 2015 to October 26, 2015. The summary above covers all 89.

74 results from the 10 samples listed here: 8 detected, 66 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 71 to 80 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
Oct 26, 2015 19:55
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
151030-013PB
Laboratory
MSDH Lab
0.0538 mg/l , sample collected Oct 26, 2015 19:55, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2015 – Dec 31, 2015
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 26, 2015 19:55, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2015 – Dec 31, 2015
Collected
Oct 26, 2015 06:30
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
151030-012PB
Laboratory
MSDH Lab
0.0138 mg/l , sample collected Oct 26, 2015 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2015 – Dec 31, 2015
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 26, 2015 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2015 – Dec 31, 2015
Collected
Oct 26, 2015
Sampling point
DS000 Distribution DS000
Sample type
Routine
Lab sample
151030-011PB
Laboratory
MSDH Lab
0.0613 mg/l , sample collected Oct 26, 2015, 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, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2015 – Dec 31, 2015
Collected
Aug 17, 2015 12:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
150818-003TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 4 ug/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2014 – Dec 31, 2016
Collected
Aug 17, 2015 12:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
150818-003HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Aug 17, 2015 12:00, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2014 – Dec 31, 2016
Collected
May 18, 2015 01:00
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
150519-026VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Xylenes, Total 2955 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Dichloromethane 2964 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 O-Dichlorobenzene 2968 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 P-Dichlorobenzene 2969 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Vinyl Chloride 2976 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 1,1-Dichloroethylene 2977 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 1,2-Dichloroethane 2980 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 1,1,1-Trichloroethane 2981 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Carbon Tetrachloride 2982 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 1,2-Dichloropropane 2983 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Trichloroethylene 2984 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 1,1,2-Trichloroethane 2985 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Tetrachloroethylene 2987 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Chlorobenzene 2989 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Benzene 2990 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Toluene 2991 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Ethylbenzene 2992 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2015 01:00, sampling point TF081 Styrene 2996 EPA method 524.2 Apr 1, 2015 – Jun 30, 2015
Collected
Apr 13, 2015 01:15
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
150414-065IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 13, 2015 01:15, sampling point TF081 Arsenic 1005 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0205 mg/l , sample collected Apr 13, 2015 01:15, sampling point TF081 Barium 1010 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 13, 2015 01:15, sampling point TF081 Cadmium 1015 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
0.0011 mg/l , sample collected Apr 13, 2015 01:15, sampling point TF081 Chromium 1020 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 13, 2015 01:15, sampling point TF081 Fluoride 1025 EPA method 300.0 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 13, 2015 01:15, sampling point TF081 Mercury 1035 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 13, 2015 01:15, sampling point TF081 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 13, 2015 01:15, sampling point TF081 Selenium 1045 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 13, 2015 01:15, sampling point TF081 Antimony, Total 1074 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 13, 2015 01:15, sampling point TF081 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 13, 2015 01:15, sampling point TF081 Thallium, Total 1085 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Collected
Mar 30, 2015 13:30
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
150331-069NI
Laboratory
MSDH Lab
0.45 mg/l , sample collected Mar 30, 2015 13:30, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
0.45 mg/l , sample collected Mar 30, 2015 13:30, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 30, 2015 13:30, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Mar 9, 2015 12:00
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
150310-052CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Mar 9, 2015 12:00
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
150310-021VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Dichloromethane 2964 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Benzene 2990 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Toluene 2991 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 9, 2015 12:00, sampling point TF081 Styrene 2996 EPA method 524.2 Jan 1, 2015 – Mar 31, 2015

Routine (10).