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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.

Fluoride results

MS0620008 , Lake Water Works

33 samples have been analysed for Fluoride at Lake Water Works.

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 Fluoride result

The table below lists 1–10 of 33 samples, newest first — collected December 14, 2016 to March 25, 2025.

10 Fluoride results from the 10 samples listed here: 6 detected, 4 not detected. Those samples also carried 100 results for other analytes, which are on the full results page.

Fluoride results for Lake Water Works, from 1 to 10 of 33 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
Mar 25, 2025 09:05
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
IN-250326-006
Laboratory
MSDH Lab
0.185 mg/l , sample collected Mar 25, 2025 09:05, sampling point TF103 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Collected
Mar 25, 2025 08:52
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-250326-005
Laboratory
MSDH Lab
0.124 mg/l , sample collected Mar 25, 2025 08:52, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Collected
Mar 25, 2025 08:55
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250326-004
Laboratory
MSDH Lab
0.135 mg/l , sample collected Mar 25, 2025 08:55, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Collected
Oct 19, 2022 07:50
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
IN-221019-060
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 07:50, sampling point TF103 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Collected
Oct 19, 2022 07:40
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-221019-059
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 07:40, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Collected
Oct 19, 2022 07:35
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-221019-058
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 19, 2022 07:35, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Collected
Apr 16, 2019 12:31
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
190417-024IN
Laboratory
MSDH Lab
0.11 mg/l , sample collected Apr 16, 2019 12:31, sampling point TF103 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Collected
Apr 16, 2019 12:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
190417-023IN
Laboratory
MSDH Lab
0.111 mg/l , sample collected Apr 16, 2019 12:15, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Collected
Apr 16, 2019 12:23
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
190417-022IN
Laboratory
MSDH Lab
0.107 mg/l , sample collected Apr 16, 2019 12:23, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Collected
Dec 14, 2016 01:10
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
161215-033IN
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 14, 2016 01:10, sampling point TF103 Fluoride 1025 EPA method 300.0 Jan 1, 2014 – Dec 31, 2016

Routine (10).