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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

MS0060009 , Town of Gunnison

26 of the 56 analytes this system has been tested for have been detected at least once, across 516 samples on record.

The other 30 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 516 samples on record, detections range from October 13, 1993 to February 28, 2024. 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 Gunnison, 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 324 of 361 results Oct 13, 1993 Sep 29, 2023
Lead 1030 Inorganic Chemical 234 of 361 results Oct 13, 1993 Sep 29, 2023
Barium 1010 Inorganic Chemical 16 of 16 results Feb 5, 2002 Feb 7, 2024
Fluoride 1025 Inorganic Chemical 15 of 16 results Nov 15, 2004 Feb 7, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 14 of 18 results Jun 25, 2007 Feb 28, 2024
TTHM 2950 Organic Chemical 14 of 17 results May 3, 2004 Feb 28, 2024
Chromium 1020 Inorganic Chemical 12 of 16 results Feb 5, 2002 Feb 7, 2024
Dichloroacetic Acid 2451 Organic Chemical 12 of 13 results Mar 9, 2009 Sep 6, 2017
Selenium 1045 Inorganic Chemical 11 of 16 results Nov 15, 2004 Sep 19, 2018
Chloroform 2941 Organic Chemical 11 of 13 results Jun 25, 2007 Aug 6, 2014
Arsenic 1005 Inorganic Chemical 10 of 16 results Nov 15, 2004 Feb 7, 2024
Trichloroacetic Acid 2452 Organic Chemical 7 of 13 results Mar 9, 2009 Jul 13, 2011
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 10 results Dec 6, 2011 Jul 12, 2012
Dibromoacetic Acid 2454 Organic Chemical 5 of 13 results Mar 9, 2009 Jul 13, 2011
Nickel 1036 Inorganic Chemical 4 of 16 results Mar 10, 2008 May 5, 2014
Bromodichloromethane 2943 Organic Chemical 4 of 13 results Jun 25, 2007 Jul 13, 2011
Dibromochloromethane 2944 Organic Chemical 4 of 13 results Jun 25, 2007 Jul 13, 2011
Bromoform 2942 Organic Chemical 3 of 13 results Jun 25, 2007 Sep 8, 2009
Nitrate-Nitrite 1038 Inorganic Chemical 2 of 42 results Apr 6, 2020 Jan 25, 2022
Nitrate 1040 Inorganic Chemical 2 of 42 results Apr 6, 2020 Jan 25, 2022
Nitrite 1041 Inorganic Chemical 2 of 42 results Feb 7, 2018 Feb 7, 2018
Monochloroacetic Acid 2450 Organic Chemical 2 of 13 results Dec 7, 2009 Dec 7, 2009
Monobromoacetic Acid 2453 Organic Chemical 2 of 13 results Sep 8, 2009 Sep 8, 2009
Cadmium 1015 Inorganic Chemical 2 of 16 results Feb 14, 2005 Mar 10, 2008
Xylenes, Total 2955 Organic Chemical 2 of 26 results Oct 4, 2004 Oct 4, 2004
Toluene 2991 Organic Chemical 1 of 26 results Mar 29, 2004 Mar 29, 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 1–10 of 516 samples, newest first — collected September 29, 2023 to May 20, 2025. The summary above covers all 516.

28 results from the 10 samples listed here: 10 detected, 18 not detected. Across the whole record it is 720 of 1,791. 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 Town of Gunnison, every result from 1 to 10 of 516 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
May 20, 2025 09:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
CN-250521-023
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 20, 2025 09:00, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
May 20, 2025 09:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-250521-022
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 20, 2025 09:00, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Jan 29, 2025 09:15
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-250130-007
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 29, 2025 09:15, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 29, 2025 09:15, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 29, 2025 09:15, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Jul 17, 2024 15:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-240718-015
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jul 17, 2024 15:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jul 17, 2024 15:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 17, 2024 15:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Feb 28, 2024 09:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-240229-015
Laboratory
MSDH Lab
5.53 ug/l , sample collected Feb 28, 2024 09:00, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 28, 2024 09:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
TH-240229-015
Laboratory
MSDH Lab
10.1 ug/l , sample collected Feb 28, 2024 09:00, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 7, 2024 09:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-240208-030
Laboratory
MSDH Lab
0.0016 mg/l , sample collected Feb 7, 2024 09:30, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0487 mg/l , sample collected Feb 7, 2024 09:30, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 7, 2024 09:30, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0038 mg/l , sample collected Feb 7, 2024 09:30, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.195 mg/l , sample collected Feb 7, 2024 09:30, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 7, 2024 09:30, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 7, 2024 09:30, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 7, 2024 09:30, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 7, 2024 09:30, sampling point TF102 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 Feb 7, 2024 09:30, sampling point TF102 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 Feb 7, 2024 09:30, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 25, 2024 08:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-240126-008
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 25, 2024 08:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 25, 2024 08:00, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 25, 2024 08:00, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Sep 29, 2023 06:09
Sampling point
LC0019 Location withheld
Sample type
Routine
Lab sample
PB-231003-010
Laboratory
MSDH Lab
0.071 mg/l , sample collected Sep 29, 2023 06:09, sampling point LC0019 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.55 ug/l , sample collected Sep 29, 2023 06:09, sampling point LC0019 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 29, 2023 07:30
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-231003-009
Laboratory
MSDH Lab
0.0305 mg/l , sample collected Sep 29, 2023 07:30, sampling point LC0003 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
3.39 ug/l , sample collected Sep 29, 2023 07:30, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023

Routine (10).