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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 51–60 of 257 samples, newest first — collected October 6, 2020 to December 16, 2020. The summary above covers all 257.

51 results from the 10 samples listed here: 42 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 51 to 60 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
Dec 16, 2020 13:00
Sampling point
TF104 Treatment Facility TF 104
Sample type
Routine
Lab sample
CN-201217-003
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Dec 16, 2020 13:00, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2018 – Dec 31, 2020
Collected
Dec 11, 2020 08:00
Sampling point
WL004 Well WL004
Sample type
Routine
Lab sample
201215-004PC
Laboratory
MSDH Lab
1.089 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 Dec 11, 2020 08:00, sampling point WL004 Calcium 1016 EPA method 200.8 Not recorded
Not detected below 2 mg/l Minimum Reporting Level , sample collected Dec 11, 2020 08:00, sampling point WL004 Chloride 1017 EPA method 300.0 Not recorded
0.051 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 Dec 11, 2020 08:00, sampling point WL004 Fluoride 1025 EPA method 300.0 Not recorded
0.003 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 Dec 11, 2020 08:00, sampling point WL004 Iron 1028 EPA method 200.8 Not recorded
0.196 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 Dec 11, 2020 08:00, sampling point WL004 Magnesium 1031 EPA method 200.8 Not recorded
0.014 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 Dec 11, 2020 08:00, sampling point WL004 Manganese 1032 EPA method 200.8 Not recorded
1.973 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 Dec 11, 2020 08:00, sampling point WL004 Potassium 1042 EPA method 200.8 Not recorded
79.99 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 Dec 11, 2020 08:00, sampling point WL004 Sodium 1052 EPA method 200.8 Not recorded
6.619 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 Dec 11, 2020 08:00, sampling point WL004 Sulfate 1055 EPA method 300.0 Not recorded
185.25 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 Dec 11, 2020 08:00, sampling point WL004 Residue, Total, Filterable 1057 EPA method CALCUL LAB Not recorded
0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. 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 Dec 11, 2020 08:00, sampling point WL004 Alkalinity, Caco3 Stability 1067 EPA method 2320B Not recorded
0.25 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 Dec 11, 2020 08:00, sampling point WL004 Carbon Dioxide 1901 EPA method CALCUL LAB Not recorded
5 units 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 Dec 11, 2020 08:00, sampling point WL004 Color 1905 EPA method 2120B Not recorded
3.53 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 Dec 11, 2020 08:00, sampling point WL004 Hardness, Total (As Caco3) 1915 EPA method CALCUL LAB Not recorded
152.41 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 Dec 11, 2020 08:00, sampling point WL004 Alkalinity, Total 1927 EPA method 2320B Not recorded
0.08 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 Dec 11, 2020 08:00, sampling point WL004 Iron, Field Result FEFD EPA method 3500AL-D Not recorded
64.995 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 Dec 11, 2020 08:00, sampling point WL004 Calculated Sodium NACA EPA method CALCUL LAB Not recorded
8.2 units 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 Dec 11, 2020 08:00, sampling point WL004 PH, Field Result PHFD EPA method 3500AL-D Not recorded
Collected
Dec 11, 2020 08:30
Sampling point
WL003 Well W003
Sample type
Routine
Lab sample
201215-002PC
Laboratory
MSDH Lab
0.469 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 Dec 11, 2020 08:30, sampling point WL003 Calcium 1016 EPA method 200.8 Not recorded
Not detected below 2 mg/l Minimum Reporting Level , sample collected Dec 11, 2020 08:30, sampling point WL003 Chloride 1017 EPA method 300.0 Not recorded
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Dec 11, 2020 08:30, sampling point WL003 Fluoride 1025 EPA method 300.0 Not recorded
0.032 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 Dec 11, 2020 08:30, sampling point WL003 Iron 1028 EPA method 200.8 Not recorded
0.09 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 Dec 11, 2020 08:30, sampling point WL003 Magnesium 1031 EPA method 200.8 Not recorded
0.006 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 Dec 11, 2020 08:30, sampling point WL003 Manganese 1032 EPA method 200.8 Not recorded
1.186 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 Dec 11, 2020 08:30, sampling point WL003 Potassium 1042 EPA method 200.8 Not recorded
80.93 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 Dec 11, 2020 08:30, sampling point WL003 Sodium 1052 EPA method 200.8 Not recorded
6.511 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 Dec 11, 2020 08:30, sampling point WL003 Sulfate 1055 EPA method 300.0 Not recorded
181.3 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 Dec 11, 2020 08:30, sampling point WL003 Residue, Total, Filterable 1057 EPA method CALCUL LAB Not recorded
4.31 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 Dec 11, 2020 08:30, sampling point WL003 Alkalinity, Caco3 Stability 1067 EPA method 2320B Not recorded
0.25 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 Dec 11, 2020 08:30, sampling point WL003 Carbon Dioxide 1901 EPA method CALCUL LAB Not recorded
5 units 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 Dec 11, 2020 08:30, sampling point WL003 Color 1905 EPA method 2120B Not recorded
1.54 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 Dec 11, 2020 08:30, sampling point WL003 Hardness, Total (As Caco3) 1915 EPA method CALCUL LAB Not recorded
150.05 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 Dec 11, 2020 08:30, sampling point WL003 Alkalinity, Total 1927 EPA method 2320B Not recorded
0.09 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 Dec 11, 2020 08:30, sampling point WL003 Iron, Field Result FEFD EPA method 3500AL-D Not recorded
62.93 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 Dec 11, 2020 08:30, sampling point WL003 Calculated Sodium NACA EPA method CALCUL LAB Not recorded
8.2 units 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 Dec 11, 2020 08:30, sampling point WL003 PH, Field Result PHFD EPA method 3500AL-D Not recorded
Collected
Oct 7, 2020 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
201008-096PB
Laboratory
MSDH Lab
0.0118 mg/l , sample collected Oct 7, 2020 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 7, 2020 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Oct 6, 2020 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
201008-105PB
Laboratory
MSDH Lab
0.0385 mg/l , sample collected Oct 6, 2020 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2020 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Oct 6, 2020 10:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
201008-104PB
Laboratory
MSDH Lab
0.078 mg/l , sample collected Oct 6, 2020 10:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0005 mg/l , sample collected Oct 6, 2020 10:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Oct 6, 2020 05:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
201008-103PB
Laboratory
MSDH Lab
0.0487 mg/l , sample collected Oct 6, 2020 05:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0006 mg/l , sample collected Oct 6, 2020 05:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Oct 6, 2020 12:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
201008-102PB
Laboratory
MSDH Lab
0.0242 mg/l , sample collected Oct 6, 2020 12:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2020 12:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Oct 6, 2020 06:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
201008-101PB
Laboratory
MSDH Lab
0.0243 mg/l , sample collected Oct 6, 2020 06:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2020 06:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Oct 6, 2020 03:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
201008-100PB
Laboratory
MSDH Lab
0.0453 mg/l , sample collected Oct 6, 2020 03:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2020 03:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020

Routine (10).