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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

MS0240270 , HCUA-West

11 of the 42 analytes this system has been tested for have been detected at least once, across 352 samples on record.

The other 31 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 352 samples on record, detections range from December 9, 2014 to February 12, 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 HCUA-West, 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
Xylenes, Total 2955 Organic Chemical 80 of 176 results Mar 11, 2015 Jan 5, 2022
Ethylbenzene 2992 Organic Chemical 47 of 176 results Mar 11, 2015 May 18, 2021
Barium 1010 Inorganic Chemical 24 of 24 results Mar 9, 2015 Feb 12, 2025
Fluoride 1025 Inorganic Chemical 24 of 24 results Mar 9, 2015 Feb 12, 2025
Sodium 1052 Inorganic Chemical 12 of 12 results Mar 15, 2021 Dec 3, 2024
Chromium 1020 Inorganic Chemical 12 of 24 results Mar 9, 2015 Oct 23, 2018
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 12 results Dec 9, 2014 Mar 30, 2015
Nickel 1036 Inorganic Chemical 3 of 24 results Apr 26, 2022 Feb 12, 2025
Cyanide 1024 Inorganic Chemical 1 of 24 results May 22, 2018 May 22, 2018
Arsenic 1005 Inorganic Chemical 1 of 24 results Mar 11, 2015 Mar 11, 2015
Combined Uranium 4006 Radionuclide 1 of 26 results Feb 5, 2015 Feb 5, 2015

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 352 samples, newest first — collected February 12, 2025 to August 26, 2025. The summary above covers all 352.

50 results from the 10 samples listed here: 9 detected, 41 not detected. Across the whole record it is 215 of 4,268. 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 HCUA-West, every result from 1 to 10 of 352 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 26, 2025 12:00
Sampling point
TF106 Treatment Facility TF106
Sample type
Routine
Lab sample
CN-250827-009
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 26, 2025 12:00, sampling point TF106 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 26, 2025 12:25
Sampling point
TF105 Treatment Facility TF105
Sample type
Routine
Lab sample
CN-250827-008
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 26, 2025 12:25, sampling point TF105 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 26, 2025 12:35
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
CN-250827-007
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 26, 2025 12:35, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 26, 2025 11:50
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
CN-250827-006
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 26, 2025 11:50, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 26, 2025 11:35
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
CN-250827-005
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 26, 2025 11:35, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 26, 2025 11:20
Sampling point
TF101 Treatment Facility TF101
Sample type
Routine
Lab sample
CN-250827-004
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 26, 2025 11:20, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Feb 12, 2025 08:40
Sampling point
TF106 Treatment Facility TF106
Sample type
Routine
Lab sample
IN-250213-015
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:40, sampling point TF106 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0034 mg/l , sample collected Feb 12, 2025 08:40, sampling point TF106 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 12, 2025 08:40, sampling point TF106 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:40, sampling point TF106 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.211 mg/l , sample collected Feb 12, 2025 08:40, sampling point TF106 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 12, 2025 08:40, sampling point TF106 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 12, 2025 08:40, sampling point TF106 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:40, sampling point TF106 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 12, 2025 08:40, sampling point TF106 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 12, 2025 08:40, sampling point TF106 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 12, 2025 08:40, sampling point TF106 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 12, 2025 08:06
Sampling point
TF105 Treatment Facility TF105
Sample type
Routine
Lab sample
IN-250213-014
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:06, sampling point TF105 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0217 mg/l , sample collected Feb 12, 2025 08:06, sampling point TF105 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 12, 2025 08:06, sampling point TF105 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:06, sampling point TF105 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.482 mg/l , sample collected Feb 12, 2025 08:06, sampling point TF105 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 12, 2025 08:06, sampling point TF105 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0008 mg/l , sample collected Feb 12, 2025 08:06, sampling point TF105 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:06, sampling point TF105 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 12, 2025 08:06, sampling point TF105 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 12, 2025 08:06, sampling point TF105 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 12, 2025 08:06, sampling point TF105 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 12, 2025 08:20
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
IN-250213-013
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:20, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0351 mg/l , sample collected Feb 12, 2025 08:20, sampling point TF104 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 12, 2025 08:20, sampling point TF104 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:20, sampling point TF104 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.59 mg/l , sample collected Feb 12, 2025 08:20, sampling point TF104 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 12, 2025 08:20, sampling point TF104 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 12, 2025 08:20, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:20, sampling point TF104 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 12, 2025 08:20, sampling point TF104 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 12, 2025 08:20, sampling point TF104 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 12, 2025 08:20, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 12, 2025 08:50
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
IN-250213-012
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:50, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0068 mg/l , sample collected Feb 12, 2025 08:50, sampling point TF103 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 12, 2025 08:50, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:50, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.147 mg/l , sample collected Feb 12, 2025 08:50, sampling point TF103 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 12, 2025 08:50, sampling point TF103 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 12, 2025 08:50, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 12, 2025 08:50, sampling point TF103 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 12, 2025 08:50, sampling point TF103 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 12, 2025 08:50, sampling point TF103 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 12, 2025 08:50, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025

Routine (10).