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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

MS0810004 , East End Water Association

22 of the 57 analytes this system has been tested for have been detected at least once, across 235 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 235 samples on record, detections range from November 3, 2003 to April 9, 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 East End 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 80 of 80 results Sep 18, 2007 Aug 14, 2023
Lead 1030 Inorganic Chemical 52 of 80 results Sep 18, 2007 Aug 14, 2023
Barium 1010 Inorganic Chemical 20 of 20 results Nov 3, 2003 Apr 9, 2025
Fluoride 1025 Inorganic Chemical 18 of 20 results Nov 3, 2003 Apr 9, 2025
Chromium 1020 Inorganic Chemical 11 of 20 results Nov 3, 2003 Apr 9, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 12, 2011 Jul 20, 2012
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 8 results Sep 13, 2004 Dec 6, 2022
TTHM 2950 Organic Chemical 7 of 9 results Sep 13, 2004 Dec 6, 2022
Nickel 1036 Inorganic Chemical 6 of 20 results May 12, 2010 Apr 9, 2025
Sodium 1052 Inorganic Chemical 4 of 4 results Sep 24, 2019 Mar 20, 2023
Xylenes, Total 2955 Organic Chemical 4 of 30 results Sep 7, 2004 Jul 22, 2010
Dichloroacetic Acid 2451 Organic Chemical 3 of 3 results Jun 22, 2011 Aug 15, 2017
Trichloroacetic Acid 2452 Organic Chemical 3 of 3 results Jun 22, 2011 Aug 15, 2017
Chloroform 2941 Organic Chemical 3 of 4 results Jun 22, 2011 Aug 15, 2017
Bromodichloromethane 2943 Organic Chemical 3 of 4 results Jun 22, 2011 Aug 15, 2017
Dibromochloromethane 2944 Organic Chemical 3 of 4 results Jun 22, 2011 Aug 15, 2017
Nitrate 1040 Inorganic Chemical 2 of 42 results Aug 17, 2006 Aug 17, 2006
Cadmium 1015 Inorganic Chemical 2 of 20 results May 2, 2005 May 2, 2005
Selenium 1045 Inorganic Chemical 2 of 20 results May 2, 2005 May 2, 2005
Sulfate 1055 Inorganic Chemical 2 of 4 results Nov 3, 2003 Nov 3, 2003
Cyanide 1024 Inorganic Chemical 1 of 22 results Oct 21, 2013 Oct 21, 2013
Ethylbenzene 2992 Organic Chemical 1 of 30 results Sep 7, 2004 Sep 7, 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 21–30 of 235 samples, newest first — collected November 30, 2022 to August 14, 2023. The summary above covers all 235.

36 results from the 10 samples listed here: 11 detected, 25 not detected. Across the whole record it is 244 of 1,264. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 3 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for East End Water Association, every result from 21 to 30 of 235 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 14, 2023 09:00
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-230816-121
Laboratory
MSDH Lab
0.0118 mg/l , sample collected Aug 14, 2023 09:00, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.8 ug/l , sample collected Aug 14, 2023 09:00, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 14, 2023 05:00
Sampling point
LC0011 Location withheld
Sample type
Routine
Lab sample
PB-230816-120
Laboratory
MSDH Lab
0.109 mg/l , sample collected Aug 14, 2023 05:00, sampling point LC0011 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 14, 2023 05:00, sampling point LC0011 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Mar 20, 2023 13:55
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NA-230321-009
Laboratory
MSDH Lab
70.2 mg/l , sample collected Mar 20, 2023 13:55, sampling point TF102 Sodium 1052 EPA method 200.7 Not recorded
Collected
Mar 20, 2023 13:55
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NA-230321-008
Laboratory
MSDH Lab
68.8 mg/l , sample collected Mar 20, 2023 13:55, sampling point TF101 Sodium 1052 EPA method 200.7 Not recorded
Collected
Mar 20, 2023 13:45
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-230321-008
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 20, 2023 13:45, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 20, 2023 13:45, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 20, 2023 13:45, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Mar 20, 2023 13:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-230321-007
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 20, 2023 13:45, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 20, 2023 13:45, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 20, 2023 13:45, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Dec 6, 2022 15:00
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
HA-221207-019
Laboratory
MSDH Lab
6.16 ug/l , sample collected Dec 6, 2022 15:00, sampling point SMD Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2023
Collected
Dec 6, 2022 15:00
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
TH-221207-020
Laboratory
MSDH Lab
5.57 ug/l , sample collected Dec 6, 2022 15:00, sampling point SMD TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Collected
Nov 30, 2022 15:10
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-221201-015
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0038 mg/l , sample collected Nov 30, 2022 15:10, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.121 mg/l , sample collected Nov 30, 2022 15:10, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Nov 30, 2022 15:10
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-221201-016
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0036 mg/l , sample collected Nov 30, 2022 15:10, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.127 mg/l , sample collected Nov 30, 2022 15:10, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 30, 2022 15:10, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022

Routine (10).