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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

MS0780018 , Webster Center Water Assn

23 of the 57 analytes this system has been tested for have been detected at least once, across 162 samples on record.

The other 34 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 162 samples on record, detections range from November 3, 2003 to March 24, 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 Webster Center Water Assn, 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 35 of 35 results Jul 11, 2007 Aug 22, 2023
Lead 1030 Inorganic Chemical 21 of 35 results Jul 11, 2007 Aug 22, 2023
Barium 1010 Inorganic Chemical 19 of 19 results Nov 3, 2003 Mar 24, 2025
Chromium 1020 Inorganic Chemical 12 of 19 results Nov 3, 2003 May 13, 2019
Fluoride 1025 Inorganic Chemical 11 of 19 results May 4, 2005 Mar 24, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 13, 2011 Jul 17, 2012
Combined Radium (-226 & -228) 4010 Radionuclide 5 of 10 results Dec 13, 2011 Jul 17, 2012
Radium-226 4020 Radionuclide 5 of 10 results Dec 13, 2011 Jul 17, 2012
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 16, 2019 Mar 23, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 3 of 7 results Aug 10, 2010 Oct 17, 2022
TTHM 2950 Organic Chemical 3 of 7 results Sep 11, 2007 Sep 17, 2013
Nickel 1036 Inorganic Chemical 3 of 19 results Apr 8, 2004 May 29, 2013
Sulfate 1055 Inorganic Chemical 3 of 4 results Nov 3, 2003 Apr 8, 2004
Xylenes, Total 2955 Organic Chemical 2 of 14 results Oct 17, 2022 Oct 17, 2022
Selenium 1045 Inorganic Chemical 2 of 19 results Apr 8, 2004 Mar 9, 2010
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 39 results Sep 7, 2022 Sep 7, 2022
Nitrate 1040 Inorganic Chemical 1 of 39 results Sep 7, 2022 Sep 7, 2022
Arsenic 1005 Inorganic Chemical 1 of 19 results Dec 13, 2016 Dec 13, 2016
Dichloroacetic Acid 2451 Organic Chemical 1 of 3 results Sep 17, 2013 Sep 17, 2013
Trichloroacetic Acid 2452 Organic Chemical 1 of 3 results Sep 17, 2013 Sep 17, 2013
Chloroform 2941 Organic Chemical 1 of 4 results Sep 17, 2013 Sep 17, 2013
Bromodichloromethane 2943 Organic Chemical 1 of 4 results Sep 17, 2013 Sep 17, 2013
Dibromochloromethane 2944 Organic Chemical 1 of 4 results Sep 17, 2013 Sep 17, 2013

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 111–120 of 162 samples, newest first — collected September 11, 2007 to August 10, 2010. The summary above covers all 162.

42 results from the 10 samples listed here: 7 detected, 35 not detected. Across the whole record it is 145 of 812. 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 Webster Center Water Assn, every result from 111 to 120 of 162 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 10, 2010
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
100811-012TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 10, 2010, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 10, 2010, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 10, 2010, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 10, 2010, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — 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 a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. 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 Aug 10, 2010, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2008 – Dec 31, 2010
Collected
Apr 29, 2010
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
100430-002CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Apr 29, 2010, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Apr 29, 2010
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
100430-001CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Apr 29, 2010, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Mar 9, 2010
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
100310-002IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0608 mg/l , sample collected Mar 9, 2010, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0072 mg/l , sample collected Mar 9, 2010, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF103 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
0.0009 mg/l , sample collected Mar 9, 2010, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Mar 9, 2010
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
100310-001IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0213 mg/l , sample collected Mar 9, 2010, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0062 mg/l , sample collected Mar 9, 2010, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.111 mg/l , sample collected Mar 9, 2010, sampling point TF102 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 9, 2010, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Oct 28, 2009
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
091029-001NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Oct 28, 2009, sampling point TF103 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Oct 28, 2009, sampling point TF103 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Oct 28, 2009, sampling point TF103 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Oct 19, 2009
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
091020-010NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Oct 19, 2009, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Oct 19, 2009, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Oct 19, 2009, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Jul 28, 2008
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
080729-070NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jul 28, 2008, sampling point TF103 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jul 28, 2008, sampling point TF103 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 28, 2008, sampling point TF103 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
Jul 28, 2008
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
080729-067NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jul 28, 2008, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jul 28, 2008, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 28, 2008, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
Sep 11, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070912-007HA
Laboratory
MSDH Lab
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Sep 11, 2007, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2005 – Dec 31, 2007

Routine (10).