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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

MS0580010 , Troy Water Association

40 of the 75 analytes this system has been tested for have been detected at least once, across 254 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 254 samples on record, detections range from October 15, 2003 to August 19, 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 Troy 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 7, 2007 Jul 27, 2023
Lead 1030 Inorganic Chemical 36 of 60 results Aug 7, 2007 Jul 27, 2023
Barium 1010 Inorganic Chemical 20 of 20 results Oct 15, 2003 Mar 18, 2025
Fluoride 1025 Inorganic Chemical 17 of 20 results Oct 15, 2003 Mar 18, 2025
Nickel 1036 Inorganic Chemical 11 of 20 results Apr 11, 2005 Mar 18, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 11 of 12 results Mar 12, 2012 Oct 27, 2014
Arsenic 1005 Inorganic Chemical 10 of 20 results Apr 11, 2005 Mar 18, 2025
Nitrite 1041 Inorganic Chemical 8 of 45 results Sep 26, 2005 May 4, 2015
Chromium 1020 Inorganic Chemical 7 of 20 results Oct 15, 2003 May 6, 2013
Selenium 1045 Inorganic Chemical 7 of 20 results Apr 11, 2005 May 6, 2013
TTHM 2950 Organic Chemical 6 of 20 results Sep 4, 2007 Aug 19, 2025
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 20, 2019 Mar 5, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 3 of 45 results Sep 26, 2005 Jul 14, 2008
Bromoform 2942 Organic Chemical 2 of 14 results Dec 4, 2024 May 14, 2025
Dibromochloromethane 2944 Organic Chemical 2 of 14 results Feb 13, 2025 May 14, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 2 of 20 results Jun 28, 2010 Nov 3, 2021
Endrin 2005 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Toxaphene 2020 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Hexachlorocyclopentadiene 2042 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Heptachlor 2065 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Aldrin 2356 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Aroclor 1016 2388 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Aroclor 1221 2390 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Aroclor 1232 2392 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Aroclor 1242 2394 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Aroclor 1254 2398 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Aroclor 1260 2400 Organic Chemical 2 of 2 results Apr 6, 2020 Apr 6, 2020
Xylenes, Total 2955 Organic Chemical 2 of 46 results Aug 17, 2010 Aug 17, 2010
Nitrate 1040 Inorganic Chemical 2 of 45 results Jul 14, 2008 Jul 14, 2008
Cadmium 1015 Inorganic Chemical 2 of 20 results Apr 11, 2005 Apr 11, 2005
Sulfate 1055 Inorganic Chemical 2 of 4 results Mar 17, 2004 Mar 17, 2004
BHC-Gamma 2010 Organic Chemical 1 of 2 results Apr 6, 2020 Apr 6, 2020
Methoxychlor 2015 Organic Chemical 1 of 2 results Apr 6, 2020 Apr 6, 2020
Heptachlor Epoxide 2067 Organic Chemical 1 of 2 results Apr 6, 2020 Apr 6, 2020
Dieldrin 2070 Organic Chemical 1 of 2 results Apr 6, 2020 Apr 6, 2020
Hexachlorobenzene 2274 Organic Chemical 1 of 2 results Apr 6, 2020 Apr 6, 2020
Aroclor 1248 2396 Organic Chemical 1 of 2 results Apr 6, 2020 Apr 6, 2020
Chlordane 2959 Organic Chemical 1 of 2 results Apr 6, 2020 Apr 6, 2020
Cyanide 1024 Inorganic Chemical 1 of 20 results Apr 10, 2006 Apr 10, 2006
Dichloromethane 2964 Organic Chemical 1 of 46 results Aug 23, 2004 Aug 23, 2004

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 151–160 of 254 samples, newest first — collected August 6, 2012 to May 6, 2013. The summary above covers all 254.

52 results from the 10 samples listed here: 16 detected, 36 not detected. Across the whole record it is 247 of 1,728. 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 Troy Water Association, every result from 151 to 160 of 254 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
May 6, 2013 02:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130507-035IN
Laboratory
MSDH Lab
0.0009 mg/l , sample collected May 6, 2013 02:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0917 mg/l , sample collected May 6, 2013 02:00, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0015 mg/l , sample collected May 6, 2013 02:00, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.16 mg/l , sample collected May 6, 2013 02:00, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0036 mg/l , sample collected May 6, 2013 02:00, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
0.0037 mg/l , sample collected May 6, 2013 02:00, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
May 6, 2013 02:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
130507-034IN
Laboratory
MSDH Lab
0.0005 mg/l , sample collected May 6, 2013 02:00, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0952 mg/l , sample collected May 6, 2013 02:00, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.163 mg/l , sample collected May 6, 2013 02:00, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0027 mg/l , sample collected May 6, 2013 02:00, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 6, 2013 02:00, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Mar 11, 2013 01:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130312-071NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 01:45, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 01:45, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 01:45, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Collected
Mar 11, 2013 01:45
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
130312-067NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 01:45, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 01:45, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 01:45, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Collected
Oct 5, 2012 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
201301130095
Laboratory
Radiation Safety Engineering
1.1 pci/l , sample collected Oct 5, 2012 13:00, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.627 pci/l Minimum Reporting Level , sample collected Oct 5, 2012 13:00, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.627 pci/l Minimum Reporting Level , sample collected Oct 5, 2012 13:00, sampling point TF101 Radium-226 4020 EPA method 903.1 Oct 1, 2012 – Dec 31, 2012
Not detected below 0.47 pci/l Minimum Reporting Level , sample collected Oct 5, 2012 13:00, sampling point TF101 Radium-228 4030 EPA method 904.0 Oct 1, 2012 – Dec 31, 2012
Collected
Oct 5, 2012 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
201301120084
Laboratory
Radiation Safety Engineering
1 pci/l , sample collected Oct 5, 2012 13:00, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Oct 5, 2012 13:00, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.192 pci/l Minimum Reporting Level , sample collected Oct 5, 2012 13:00, sampling point TF102 Radium-226 4020 EPA method 903.1 Oct 1, 2012 – Dec 31, 2012
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Oct 5, 2012 13:00, sampling point TF102 Radium-228 4030 EPA method 904.0 Oct 1, 2012 – Dec 31, 2012
Collected
Oct 4, 2012 14:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
121005-076
Laboratory
Radiation Safety Engineering
1.1 pci/l , sample collected Oct 4, 2012 14:00, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.627 pci/l Minimum Reporting Level , sample collected Oct 4, 2012 14:00, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.627 pci/l Minimum Reporting Level , sample collected Oct 4, 2012 14:00, sampling point TF101 Radium-226 4020 EPA method 903.1 Oct 1, 2012 – Dec 31, 2012
Not detected below 0.47 pci/l Minimum Reporting Level , sample collected Oct 4, 2012 14:00, sampling point TF101 Radium-228 4030 EPA method 904.0 Oct 1, 2012 – Dec 31, 2012
Collected
Oct 4, 2012 14:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
121005-046
Laboratory
Radiation Safety Engineering
1 pci/l , sample collected Oct 4, 2012 14:00, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Oct 4, 2012 14:00, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.192 pci/l Minimum Reporting Level , sample collected Oct 4, 2012 14:00, sampling point TF102 Radium-226 4020 EPA method 903.1 Oct 1, 2012 – Dec 31, 2012
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Oct 4, 2012 14:00, sampling point TF102 Radium-228 4030 EPA method 904.0 Oct 1, 2012 – Dec 31, 2012
Collected
Aug 6, 2012 15:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120807-123
Laboratory
Radiation Safety Engineering
1.1 pci/l , sample collected Aug 6, 2012 15:00, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.627 pci/l Minimum Reporting Level , sample collected Aug 6, 2012 15:00, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.627 pci/l Minimum Reporting Level , sample collected Aug 6, 2012 15:00, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.47 pci/l Minimum Reporting Level , sample collected Aug 6, 2012 15:00, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Aug 6, 2012 14:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
120807-109
Laboratory
Radiation Safety Engineering
1 pci/l , sample collected Aug 6, 2012 14:00, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Aug 6, 2012 14:00, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.192 pci/l Minimum Reporting Level , sample collected Aug 6, 2012 14:00, sampling point TF102 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.33 pci/l Minimum Reporting Level , sample collected Aug 6, 2012 14:00, sampling point TF102 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012

Routine (10).