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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

MS0160006 , Town of Seminary

28 of the 58 analytes this system has been tested for have been detected at least once, across 198 samples on record.

The other 30 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 198 samples on record, detections range from August 31, 1993 to June 25, 2025. 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 Town of Seminary, 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 48 of 72 results Aug 31, 1993 Jun 25, 2025
Lead 1030 Inorganic Chemical 41 of 72 results Aug 31, 1993 Jun 25, 2025
Barium 1010 Inorganic Chemical 17 of 17 results Apr 23, 2002 Feb 3, 2025
Fluoride 1025 Inorganic Chemical 17 of 17 results Apr 23, 2002 Feb 3, 2025
Chromium 1020 Inorganic Chemical 11 of 17 results Apr 23, 2002 Feb 3, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 7 results May 19, 2004 Mar 27, 2023
TTHM 2950 Organic Chemical 7 of 7 results May 19, 2004 Mar 27, 2023
Xylenes, Total 2955 Organic Chemical 7 of 24 results Aug 16, 2012 Sep 5, 2018
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 12, 2011 Jul 10, 2012
Sodium 1052 Inorganic Chemical 4 of 4 results Feb 1, 2021 Oct 16, 2024
Chloroform 2941 Organic Chemical 4 of 4 results Sep 20, 2006 Aug 9, 2017
Bromodichloromethane 2943 Organic Chemical 4 of 4 results Sep 20, 2006 Aug 9, 2017
Nickel 1036 Inorganic Chemical 4 of 17 results Jan 25, 2006 Apr 15, 2014
Gross Alpha Particle Activity 4109 Radionuclide 4 of 4 results Jun 18, 2012 Jan 15, 2013
Dichloroacetic Acid 2451 Organic Chemical 3 of 3 results Jun 20, 2011 Aug 9, 2017
Trichloroacetic Acid 2452 Organic Chemical 3 of 3 results Jun 20, 2011 Aug 9, 2017
Sulfate 1055 Inorganic Chemical 3 of 3 results Apr 23, 2002 Jan 26, 2004
Arsenic 1005 Inorganic Chemical 2 of 17 results Oct 1, 2018 Feb 3, 2025
Nitrite 1041 Inorganic Chemical 2 of 36 results Jan 10, 2022 Jan 10, 2022
Cyanide 1024 Inorganic Chemical 2 of 14 results Aug 17, 2011 Apr 20, 2020
Ethylbenzene 2992 Organic Chemical 2 of 24 results May 21, 2018 Sep 5, 2018
Dibromochloromethane 2944 Organic Chemical 2 of 4 results Sep 20, 2006 Jun 20, 2011
Cadmium 1015 Inorganic Chemical 2 of 17 results Mar 2, 2005 Jan 25, 2006
Selenium 1045 Inorganic Chemical 2 of 17 results Mar 2, 2005 Jan 25, 2006
Styrene 2996 Organic Chemical 1 of 24 results May 21, 2018 May 21, 2018
Monochloroacetic Acid 2450 Organic Chemical 1 of 3 results Aug 9, 2017 Aug 9, 2017
Dichloromethane 2964 Organic Chemical 1 of 24 results Oct 14, 2014 Oct 14, 2014
Monobromoacetic Acid 2453 Organic Chemical 1 of 3 results Jun 20, 2011 Jun 20, 2011

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 141–150 of 198 samples, newest first — collected October 12, 2004 to September 20, 2006. The summary above covers all 198.

59 results from the 10 samples listed here: 17 detected, 42 not detected. Across the whole record it is 207 of 1,054. 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 Town of Seminary, every result from 141 to 150 of 198 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
Sep 20, 2006
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
060921-004TH
Laboratory
MSDH Lab
9.42 ug/l , sample collected Sep 20, 2006, sampling point MRT000 Chloroform 2941 EPA method 551.1 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 20, 2006, sampling point MRT000 Bromoform 2942 EPA method 551.1 Not recorded
3.02 ug/l , sample collected Sep 20, 2006, sampling point MRT000 Bromodichloromethane 2943 EPA method 551.1 Not recorded
1.12 ug/l , sample collected Sep 20, 2006, sampling point MRT000 Dibromochloromethane 2944 EPA method 551.1 Not recorded
13.56 ug/l , sample collected Sep 20, 2006, sampling point MRT000 TTHM 2950 EPA method 551.1 Jan 1, 2006 – Dec 31, 2008
Collected
Jun 12, 2006
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
060613-107NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jun 12, 2006, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jun 12, 2006, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jun 12, 2006, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Collected
Jan 25, 2006
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
060126-001CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Jan 25, 2006
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
060126-060IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.004866 mg/l , sample collected Jan 25, 2006, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.000161 mg/l , sample collected Jan 25, 2006, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.002917 mg/l , sample collected Jan 25, 2006, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.509801 mg/l , sample collected Jan 25, 2006, sampling point TF102 Fluoride 1025 EPA method 380-75WE Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.000593 mg/l , sample collected Jan 25, 2006, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
0.004103 mg/l , sample collected Jan 25, 2006, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 25, 2006, sampling point TF102 Uranium-238 4009 Not recorded
Collected
Nov 30, 2005
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
051201-001HA
Laboratory
MSDH Lab
0.007 mg/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 Nov 30, 2005, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2005 – Dec 31, 2005
Collected
Nov 30, 2005
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
051201-001TH
Laboratory
MSDH Lab
11.4 ug/l , sample collected Nov 30, 2005, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2005 – Dec 31, 2005
Collected
Jul 18, 2005
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
050719-120NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jul 18, 2005, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jul 18, 2005, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 18, 2005, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Collected
Mar 2, 2005
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
050303-055CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Mar 2, 2005, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Mar 2, 2005
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
050303-054IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2005, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.005834 mg/l , sample collected Mar 2, 2005, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.000117 mg/l , sample collected Mar 2, 2005, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.003084 mg/l , sample collected Mar 2, 2005, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.415358 mg/l , sample collected Mar 2, 2005, sampling point TF102 Fluoride 1025 EPA method 380-75WE Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 2, 2005, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2005, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
0.001845 mg/l , sample collected Mar 2, 2005, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2005, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 2, 2005, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 2, 2005, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Collected
Oct 12, 2004
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
041013-052VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Benzene 2990 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Toluene 2991 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 12, 2004, sampling point TF102 Styrene 2996 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004

Routine (10).