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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.

Selenium results

MS0070002 , Big Creek Water Association

44 samples have been analysed for Selenium at Big Creek Water Association.

This is one analyte out of the system’s whole record. For what has ever been detected here, and when, see all chemical and radiological results; for everything the system is tested for, see the analyte list.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

No date range is applied: this list draws on every sample on record. Show the last two years only.

Every Selenium result

The table below lists 1–10 of 44 samples, newest first — collected May 15, 2023 to June 11, 2026.

10 Selenium results from the 10 samples listed here: 7 detected, 3 not detected. Those samples also carried 98 results for other analytes, which are on the full results page.

Units in this table

Selenium is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Selenium results for Big Creek Water Association, from 1 to 10 of 44 samples shown analysed for it, newest first. This view leaves out other analytes on the same samples. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Jun 11, 2026
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
35043610001
Laboratory
Pace Analytical Services, LLC
2.9 ug/l , sample collected Jun 11, 2026, sampling point TF102 Selenium 1045 EPA method 200.8 Not recorded
Collected
Oct 8, 2025 12:20
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-251009-002
Laboratory
MSDH Lab
0.006 mg/l , sample collected Oct 8, 2025 12:20, sampling point TF101 Selenium 1045 EPA method 200.8 Oct 1, 2025 – Dec 31, 2025
Collected
Jul 8, 2025 16:25
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250709-001
Laboratory
MSDH Lab
0.0059 mg/l , sample collected Jul 8, 2025 16:25, sampling point TF101 Selenium 1045 EPA method 200.8 Jul 1, 2025 – Sep 30, 2025
Collected
Apr 9, 2025 16:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250410-047
Laboratory
MSDH Lab
0.0062 mg/l , sample collected Apr 9, 2025 16:15, sampling point TF101 Selenium 1045 EPA method 200.8 Apr 1, 2025 – Jun 30, 2025
Collected
Jan 14, 2025 14:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250115-021
Laboratory
MSDH Lab
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 14, 2025 14:45, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2025 – Mar 31, 2025
Collected
Nov 1, 2023 15:55
Sampling point
WL001 Well W001
Sample type
Routine
Lab sample
IN-231102-010
Laboratory
MSDH Lab
0.0028 mg/l , sample collected Nov 1, 2023 15:55, sampling point WL001 Selenium 1045 EPA method 200.8 Not recorded
Collected
Oct 24, 2023 16:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-231025-003
Laboratory
MSDH Lab
0.0035 mg/l , sample collected Oct 24, 2023 16:00, sampling point TF102 Selenium 1045 EPA method 200.8 Oct 1, 2023 – Dec 31, 2023
Collected
Jul 10, 2023 14:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-230711-004
Laboratory
MSDH Lab
0.0032 mg/l , sample collected Jul 10, 2023 14:00, sampling point TF102 Selenium 1045 EPA method 200.8 Jul 1, 2023 – Sep 30, 2023
Collected
May 15, 2023 11:44
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-230516-007
Laboratory
MSDH Lab
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 15, 2023 11:44, sampling point TF102 Selenium 1045 EPA method 200.8 Apr 1, 2023 – Jun 30, 2023
Collected
May 15, 2023 12:21
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-230516-006
Laboratory
MSDH Lab
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 15, 2023 12:21, sampling point TF101 Selenium 1045 EPA method 200.8 Not recorded

Routine (10).