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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

MS0740002 , Improve Water Association

21 of the 58 analytes this system has been tested for have been detected at least once, across 219 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 219 samples on record, detections range from October 29, 2003 to July 30, 2026. 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 Improve 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 60 of 60 results Aug 14, 2007 Aug 9, 2023
Nitrate-Nitrite 1038 Inorganic Chemical 42 of 43 results Jun 14, 2004 Jul 30, 2026
Nitrate 1040 Inorganic Chemical 42 of 43 results Jun 14, 2004 Jul 30, 2026
Lead 1030 Inorganic Chemical 26 of 60 results Aug 14, 2007 Aug 9, 2023
Barium 1010 Inorganic Chemical 21 of 21 results Oct 29, 2003 Jul 30, 2026
Nickel 1036 Inorganic Chemical 11 of 19 results Apr 5, 2004 Apr 1, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 8 of 8 results Mar 14, 2012 Oct 1, 2019
Combined Radium (-226 & -228) 4010 Radionuclide 7 of 9 results Mar 14, 2012 Oct 1, 2019
Radium-226 4020 Radionuclide 7 of 9 results Mar 14, 2012 Oct 1, 2019
Radium-228 4030 Radionuclide 7 of 9 results Mar 14, 2012 Oct 1, 2019
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 23, 2019 Jul 30, 2026
Fluoride 1025 Inorganic Chemical 5 of 21 results Apr 2, 2014 Jan 13, 2021
Chromium 1020 Inorganic Chemical 3 of 21 results May 29, 2013 Apr 1, 2025
Selenium 1045 Inorganic Chemical 3 of 21 results Apr 5, 2004 Apr 17, 2006
Mercury 1035 Inorganic Chemical 2 of 21 results Dec 14, 2016 Jul 30, 2026
Arsenic 1005 Inorganic Chemical 2 of 21 results Apr 5, 2004 Apr 1, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 2 of 19 results Jul 15, 2010 Oct 28, 2020
TTHM 2950 Organic Chemical 2 of 18 results Sep 19, 2007 Jul 15, 2010
Monobromoacetic Acid 2453 Organic Chemical 1 of 14 results Oct 28, 2020 Oct 28, 2020
Gross Alpha Particle Activity 4109 Radionuclide 1 of 1 result Mar 13, 2014 Mar 13, 2014
Cyanide 1024 Inorganic Chemical 1 of 19 results Apr 17, 2006 Apr 17, 2006

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 219 samples, newest first — collected August 9, 2023 to April 24, 2024. The summary above covers all 219.

27 results from the 10 samples listed here: 10 detected, 17 not detected. Across the whole record it is 259 of 1,235. 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 Improve Water Association, every result from 21 to 30 of 219 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
Apr 24, 2024 12:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-240425-024
Laboratory
MSDH Lab
1.29 mg/l , sample collected Apr 24, 2024 12:30, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
1.29 mg/l , sample collected Apr 24, 2024 12:30, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 24, 2024 12:30, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Feb 14, 2024 12:20
Sampling point
TF082 Treatment Facility TF082
Sample type
Routine
Lab sample
IN-240215-010
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2024 12:20, sampling point TF082 Arsenic 1005 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.0661 mg/l , sample collected Feb 14, 2024 12:20, sampling point TF082 Barium 1010 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2024 12:20, sampling point TF082 Cadmium 1015 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2024 12:20, sampling point TF082 Chromium 1020 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 14, 2024 12:20, sampling point TF082 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2024 12:20, sampling point TF082 Mercury 1035 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.0009 mg/l , sample collected Feb 14, 2024 12:20, sampling point TF082 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 14, 2024 12:20, sampling point TF082 Selenium 1045 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2024 12:20, sampling point TF082 Antimony, Total 1074 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2024 12:20, sampling point TF082 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2024 12:20, sampling point TF082 Thallium, Total 1085 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Jan 10, 2024 11:45
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
RU-240111-009
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 10, 2024 11:45, sampling point TF080 Combined Uranium 4006 EPA method 200.8 Jan 1, 2022 – Dec 31, 2030
Collected
Aug 30, 2023 11:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-230831-017
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 30, 2023 11:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023
Collected
Aug 30, 2023 11:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-230831-017
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 30, 2023 11:00, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Dec 31, 2023
Collected
Aug 9, 2023 06:04
Sampling point
LC0014 Location withheld
Sample type
Routine
Lab sample
PB-230810-050
Laboratory
MSDH Lab
0.274 mg/l , sample collected Aug 9, 2023 06:04, sampling point LC0014 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 9, 2023 06:04, sampling point LC0014 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 9, 2023 04:00
Sampling point
LC0019 Location withheld
Sample type
Routine
Lab sample
PB-230810-049
Laboratory
MSDH Lab
0.047 mg/l , sample collected Aug 9, 2023 04:00, sampling point LC0019 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 9, 2023 04:00, sampling point LC0019 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 9, 2023 05:30
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-230810-048
Laboratory
MSDH Lab
1.2 mg/l , sample collected Aug 9, 2023 05:30, 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 Aug 9, 2023 05:30, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 9, 2023 05:30
Sampling point
LC0020 Location withheld
Sample type
Routine
Lab sample
PB-230810-047
Laboratory
MSDH Lab
0.176 mg/l , sample collected Aug 9, 2023 05:30, sampling point LC0020 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 9, 2023 05:30, sampling point LC0020 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 9, 2023 06:40
Sampling point
LC0015 Location withheld
Sample type
Routine
Lab sample
PB-230810-046
Laboratory
MSDH Lab
0.473 mg/l , sample collected Aug 9, 2023 06:40, sampling point LC0015 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
1.4 ug/l , sample collected Aug 9, 2023 06:40, sampling point LC0015 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023

Routine (10).