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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

MS0810033 , Tri-Lakes Water Assn-East

18 of the 57 analytes this system has been tested for have been detected at least once, across 130 samples on record.

The other 39 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 130 samples on record, detections range from November 5, 2003 to April 8, 2025. These figures cover the whole record; the list of samples further down is narrowed.

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 Tri-Lakes Water Assn-East, 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 55 of 55 results Jul 12, 2007 Aug 15, 2023
Lead 1030 Inorganic Chemical 29 of 55 results Jul 12, 2007 Aug 15, 2023
Barium 1010 Inorganic Chemical 10 of 10 results Nov 5, 2003 Apr 8, 2025
TTHM 2950 Organic Chemical 7 of 7 results Sep 13, 2004 Mar 29, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 6 of 7 results Nov 28, 2005 Mar 29, 2023
Nickel 1036 Inorganic Chemical 5 of 10 results Apr 5, 2004 Apr 8, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 12, 2011 Jul 19, 2012
Chromium 1020 Inorganic Chemical 4 of 10 results May 2, 2005 Apr 8, 2025
Fluoride 1025 Inorganic Chemical 4 of 10 results May 2, 2005 Apr 8, 2025
Chloroform 2941 Organic Chemical 4 of 4 results Oct 17, 2006 Aug 14, 2017
Bromodichloromethane 2943 Organic Chemical 4 of 4 results Oct 17, 2006 Aug 14, 2017
Dibromochloromethane 2944 Organic Chemical 4 of 4 results Oct 17, 2006 Aug 14, 2017
Dichloroacetic Acid 2451 Organic Chemical 3 of 3 results Jun 21, 2011 Aug 14, 2017
Trichloroacetic Acid 2452 Organic Chemical 3 of 3 results Jun 21, 2011 Aug 14, 2017
Sodium 1052 Inorganic Chemical 2 of 2 results Sep 23, 2019 Mar 21, 2023
Monochloroacetic Acid 2450 Organic Chemical 2 of 3 results Jul 14, 2014 Aug 14, 2017
Sulfate 1055 Inorganic Chemical 2 of 2 results Nov 5, 2003 Apr 5, 2004
Arsenic 1005 Inorganic Chemical 1 of 10 results May 10, 2010 May 10, 2010

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

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The most recent samples, result by result

The 4 samples collected between September 25, 2024 and September 25, 2026 are listed below, newest first.

15 results from the 4 samples listed here: 4 detected, 11 not detected. 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 Tri-Lakes Water Assn-East, every result from the 4 samples on record, 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
Nov 18, 2025 13:10
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-251119-008
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Nov 18, 2025 13:10, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Sep 30, 2025 12:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-251001-012
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 30, 2025 12:40, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Apr 15, 2025 12:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-250416-042
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 15, 2025 12:15, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 15, 2025 12:15, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 15, 2025 12:15, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Apr 8, 2025 12:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250409-029
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 12:40, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0211 mg/l , sample collected Apr 8, 2025 12:40, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 12:40, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0013 mg/l , sample collected Apr 8, 2025 12:40, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.137 mg/l , sample collected Apr 8, 2025 12:40, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
0.0012 mg/l , sample collected Apr 8, 2025 12:40, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 12:40, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 12:40, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 12:40, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 12:40, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025

Routine (4).