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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

MS0400009 , Thomastown Water Association

42 of the 73 analytes this system has been tested for have been detected at least once, across 257 samples on record.

The other 31 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 257 samples on record, detections range from October 1, 2003 to December 8, 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 Thomastown 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 61 of 61 results Aug 11, 2004 Oct 7, 2020
Lead 1030 Inorganic Chemical 19 of 61 results Jun 28, 2007 Oct 6, 2020
TTHM 2950 Organic Chemical 18 of 23 results Jul 7, 2004 Dec 8, 2025
Barium 1010 Inorganic Chemical 16 of 16 results Oct 1, 2003 May 23, 2023
Chloroform 2941 Organic Chemical 14 of 16 results Jun 15, 2011 Dec 8, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 13 of 23 results Dec 12, 2005 Oct 14, 2025
Xylenes, Total 2955 Organic Chemical 13 of 72 results Sep 28, 2009 Aug 1, 2017
Dichloroacetic Acid 2451 Organic Chemical 12 of 16 results Jun 15, 2011 Oct 14, 2025
Bromodichloromethane 2943 Organic Chemical 12 of 16 results Jun 15, 2011 Oct 14, 2025
Chromium 1020 Inorganic Chemical 11 of 16 results Mar 8, 2004 May 23, 2023
Dibromochloromethane 2944 Organic Chemical 10 of 16 results Jun 15, 2011 Oct 14, 2025
Sodium 1052 Inorganic Chemical 8 of 8 results Sep 25, 2019 Feb 19, 2025
Trichloroacetic Acid 2452 Organic Chemical 7 of 16 results Jun 15, 2011 Oct 14, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 12, 2011 Jul 19, 2012
Sulfate 1055 Inorganic Chemical 4 of 4 results Oct 1, 2003 Dec 11, 2020
Bromoform 2942 Organic Chemical 3 of 16 results Oct 1, 2024 Mar 11, 2025
Nickel 1036 Inorganic Chemical 3 of 16 results Mar 23, 2006 Apr 2, 2014
Ethylbenzene 2992 Organic Chemical 3 of 72 results Jun 3, 2013 Oct 30, 2013
Dibromoacetic Acid 2454 Organic Chemical 2 of 16 results Oct 1, 2024 Oct 1, 2024
Calcium 1016 Inorganic Chemical 2 of 2 results Dec 11, 2020 Dec 11, 2020
Fluoride 1025 Inorganic Chemical 2 of 18 results Mar 28, 2005 Dec 11, 2020
Iron 1028 Inorganic Chemical 2 of 2 results Dec 11, 2020 Dec 11, 2020
Magnesium 1031 Inorganic Chemical 2 of 2 results Dec 11, 2020 Dec 11, 2020
Manganese 1032 Inorganic Chemical 2 of 2 results Dec 11, 2020 Dec 11, 2020
Potassium 1042 Inorganic Chemical 2 of 2 results Dec 11, 2020 Dec 11, 2020
Residue, Total, Filterable 1057 Water Quality 2 of 2 results Dec 11, 2020 Dec 11, 2020
Alkalinity, Caco3 Stability 1067 Water Quality 2 of 2 results Dec 11, 2020 Dec 11, 2020
Carbon Dioxide 1901 Water Quality 2 of 2 results Dec 11, 2020 Dec 11, 2020
Color 1905 Water Quality 2 of 2 results Dec 11, 2020 Dec 11, 2020
Hardness, Total (As Caco3) 1915 Water Quality 2 of 2 results Dec 11, 2020 Dec 11, 2020
Alkalinity, Total 1927 Water Quality 2 of 2 results Dec 11, 2020 Dec 11, 2020
Iron, Field Result FEFD Inorganic Chemical 2 of 2 results Dec 11, 2020 Dec 11, 2020
Calculated Sodium NACA Water Quality 2 of 2 results Dec 11, 2020 Dec 11, 2020
PH, Field Result PHFD Water Quality 2 of 2 results Dec 11, 2020 Dec 11, 2020
Monobromoacetic Acid 2453 Organic Chemical 2 of 16 results Aug 19, 2019 Sep 23, 2020
Arsenic 1005 Inorganic Chemical 2 of 16 results Apr 2, 2014 Apr 2, 2014
Dichloromethane 2964 Organic Chemical 2 of 72 results Aug 12, 2004 Apr 29, 2013
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 37 results Mar 26, 2024 Mar 26, 2024
Nitrate 1040 Inorganic Chemical 1 of 37 results Mar 26, 2024 Mar 26, 2024
Nitrite 1041 Inorganic Chemical 1 of 37 results Mar 26, 2024 Mar 26, 2024
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 7 results Dec 12, 2012 Dec 12, 2012
Radium-226 4020 Radionuclide 1 of 7 results Dec 12, 2012 Dec 12, 2012

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 241–250 of 257 samples, newest first — collected July 7, 2004 to August 11, 2004. The summary above covers all 257.

18 results from the 10 samples listed here: 9 detected, 9 not detected. Across the whole record it is 275 of 2,205. 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 Thomastown Water Association, every result from 241 to 250 of 257 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 11, 2004
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
040812-058PB
Laboratory
MSDH Lab
0.0133 mg/l , sample collected Aug 11, 2004, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 11, 2004, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Collected
Aug 11, 2004
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
040812-057PB
Laboratory
MSDH Lab
0.013 mg/l , sample collected Aug 11, 2004, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 11, 2004, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Collected
Aug 11, 2004
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
040812-056PB
Laboratory
MSDH Lab
0.013 mg/l , sample collected Aug 11, 2004, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 11, 2004, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Collected
Aug 11, 2004
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
040812-051PB
Laboratory
MSDH Lab
0.0144 mg/l , sample collected Aug 11, 2004, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 11, 2004, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Collected
Aug 11, 2004
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
040812-052PB
Laboratory
MSDH Lab
0.0014 mg/l , sample collected Aug 11, 2004, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 11, 2004, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Collected
Aug 11, 2004
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
040812-060PB
Laboratory
MSDH Lab
0.0118 mg/l , sample collected Aug 11, 2004, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 11, 2004, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Collected
Aug 11, 2004
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
040812-055PB
Laboratory
MSDH Lab
0.0021 mg/l , sample collected Aug 11, 2004, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 11, 2004, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Collected
Aug 11, 2004
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
040812-054PB
Laboratory
MSDH Lab
0.001 mg/l , sample collected Aug 11, 2004, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 11, 2004, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2004 – Dec 31, 2004
Collected
Jul 7, 2004
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
040708-001TH
Laboratory
MSDH Lab
22.2 ug/l , sample collected Jul 7, 2004, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2004 – Dec 31, 2004
Collected
Jul 7, 2004
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
040708-001HA
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Jul 7, 2004, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2004 – Dec 31, 2004

Routine (10).