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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

MS0270003 , Town of Isola

35 of the 72 analytes this system has been tested for have been detected at least once, across 373 samples on record.

The other 37 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 373 samples on record, detections range from July 14, 1993 to April 10, 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 Town of Isola, 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 100 of 142 results Jul 14, 1993 Jul 31, 2023
Lead 1030 Inorganic Chemical 56 of 142 results Jul 14, 1993 Jul 31, 2023
Fluoride 1025 Inorganic Chemical 36 of 37 results Sep 17, 2003 Feb 24, 2025
Barium 1010 Inorganic Chemical 31 of 34 results Sep 17, 2003 Feb 24, 2025
Chromium 1020 Inorganic Chemical 21 of 34 results Sep 17, 2003 Jun 10, 2019
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 12 of 12 results Aug 9, 2004 Apr 10, 2025
TTHM 2950 Organic Chemical 11 of 11 results Aug 9, 2004 Apr 10, 2025
Sodium 1052 Inorganic Chemical 9 of 9 results Jul 29, 2010 Feb 24, 2025
Sulfate 1055 Inorganic Chemical 9 of 9 results Sep 17, 2003 Jul 29, 2010
Nickel 1036 Inorganic Chemical 5 of 34 results Apr 14, 2008 May 23, 2022
Dichloroacetic Acid 2451 Organic Chemical 5 of 5 results Sep 23, 2008 Sep 23, 2019
Trichloroacetic Acid 2452 Organic Chemical 5 of 5 results Sep 23, 2008 Sep 23, 2019
Chloroform 2941 Organic Chemical 5 of 5 results Aug 1, 2007 Sep 25, 2018
Nitrate-Nitrite 1038 Inorganic Chemical 3 of 65 results Feb 17, 2022 Feb 17, 2022
Nitrate 1040 Inorganic Chemical 3 of 65 results Feb 17, 2022 Feb 17, 2022
Monochloroacetic Acid 2450 Organic Chemical 3 of 5 results Aug 21, 2012 Sep 23, 2019
Bromodichloromethane 2943 Organic Chemical 3 of 5 results Aug 21, 2012 Sep 25, 2018
Calcium 1016 Inorganic Chemical 3 of 3 results Jul 29, 2010 Jul 29, 2010
Potassium 1042 Inorganic Chemical 3 of 3 results Jul 29, 2010 Jul 29, 2010
Residue, Total, Filterable 1057 Water Quality 3 of 3 results Jul 29, 2010 Jul 29, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 3 of 3 results Jul 29, 2010 Jul 29, 2010
Carbon Dioxide 1901 Water Quality 3 of 3 results Jul 29, 2010 Jul 29, 2010
Color 1905 Water Quality 3 of 3 results Jul 29, 2010 Jul 29, 2010
Hardness, Total (As Caco3) 1915 Water Quality 3 of 3 results Jul 29, 2010 Jul 29, 2010
Alkalinity, Total 1927 Water Quality 3 of 3 results Jul 29, 2010 Jul 29, 2010
Iron, Field Result FEFD Inorganic Chemical 3 of 3 results Jul 29, 2010 Jul 29, 2010
Calculated Sodium NACA Water Quality 3 of 3 results Jul 29, 2010 Jul 29, 2010
PH, Field Result PHFD Water Quality 3 of 3 results Jul 29, 2010 Jul 29, 2010
Cadmium 1015 Inorganic Chemical 3 of 34 results Mar 10, 2005 Mar 10, 2005
Selenium 1045 Inorganic Chemical 3 of 34 results Mar 10, 2005 Mar 10, 2005
Monobromoacetic Acid 2453 Organic Chemical 2 of 5 results Aug 21, 2012 Jul 21, 2015
Nitrite 1041 Inorganic Chemical 2 of 65 results Aug 15, 2005 Jul 7, 2010
Xylenes, Total 2955 Organic Chemical 1 of 40 results Feb 15, 2023 Feb 15, 2023
Manganese 1032 Inorganic Chemical 1 of 3 results Jul 29, 2010 Jul 29, 2010
Antimony, Total 1074 Inorganic Chemical 1 of 34 results Sep 17, 2003 Sep 17, 2003

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 31–40 of 373 samples, newest first — collected February 15, 2023 to July 31, 2023. The summary above covers all 373.

21 results from the 10 samples listed here: 8 detected, 13 not detected. Across the whole record it is 363 of 1,932. 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 5 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 Town of Isola, every result from 31 to 40 of 373 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
Jul 31, 2023 07:00
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-230801-038
Laboratory
MSDH Lab
0.0175 mg/l , sample collected Jul 31, 2023 07:00, sampling point LC0007 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 Jul 31, 2023 07:00, sampling point LC0007 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Jul 31, 2023 07:30
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-230801-034
Laboratory
MSDH Lab
0.0072 mg/l , sample collected Jul 31, 2023 07:30, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.8 ug/l , sample collected Jul 31, 2023 07:30, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Jul 31, 2023 07:11
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-230801-037
Laboratory
MSDH Lab
0.0293 mg/l , sample collected Jul 31, 2023 07:11, sampling point LC0003 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 Jul 31, 2023 07:11, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Jul 31, 2023 07:03
Sampling point
LC0018 Location withheld
Sample type
Routine
Lab sample
PB-230801-031
Laboratory
MSDH Lab
0.103 mg/l , sample collected Jul 31, 2023 07:03, sampling point LC0018 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 Jul 31, 2023 07:03, sampling point LC0018 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Jul 31, 2023 07:01
Sampling point
LC0017 Location withheld
Sample type
Routine
Lab sample
PB-230801-040
Laboratory
MSDH Lab
0.0054 mg/l , sample collected Jul 31, 2023 07:01, sampling point LC0017 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 Jul 31, 2023 07:01, sampling point LC0017 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
May 22, 2023 10:50
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-230523-004
Laboratory
MSDH Lab
13.7 ug/l , sample collected May 22, 2023 10:50, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Collected
May 22, 2023 10:40
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-230523-004
Laboratory
MSDH Lab
7.13 ug/l , sample collected May 22, 2023 10:40, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Dec 31, 2023
Collected
Feb 15, 2023 13:15
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NI-230216-001
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 15, 2023 13:15, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 15, 2023 13:15, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 15, 2023 13:15, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Feb 15, 2023 13:20
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-230216-002
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 15, 2023 13:20, 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 Feb 15, 2023 13:20, 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 Feb 15, 2023 13:20, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Feb 15, 2023 13:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-230216-003
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 15, 2023 13:30, 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 Feb 15, 2023 13:30, 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 Feb 15, 2023 13:30, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023

Routine (10).