Federal Correctional Institution

What EPA’s and Minnesota’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves: 1,587 people
Connections: 1
Water source: Groundwater
Based in: Sandstone, MN
County: Pine
Owner: Private

The ZIP code it serves

55072

The short answer

Nothing in EPA’s and Minnesota’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. No health-based violations on file since 2016.

What was found

Total trihalomethanes (TTHM), haloacetic acids (HAA5), arsenic and nitrate: Minnesota’s yearly summaries per water system, 2023 to 2025.

Chromium (total): EPA’s compliance monitoring file, samples taken from Nov. 13, 2014 to Nov. 13, 2014. Newer results are in the utility’s annual water quality report.

Below EPA’s limits2

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

29.6ppb

Highest yearly average, 2023 to 2025

2025 average: 24.9 ppb

Averaged by year, the highest was 29.6 ppb, in 2023, below EPA’s legal limit of 80 ppb. In 2025, the latest year on file, it averaged 24.9 ppb.

What handles it

NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

5.0ppb

Highest yearly average, 2023 to 2025

2025 average: 2.2 ppb

Averaged by year, the highest was 5.0 ppb, in 2023, below EPA’s legal limit of 60 ppb. In 2025, the latest year on file, it averaged 2.2 ppb.

What handles it

No certification claim covers this compound yet.

4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.

Arsenic
Chromium (total)
Lead
Nitrate

Violations since 2016

No health-based violations on file with EPA since 2016.

What this report can’t tell you

Everything else. Total trihalomethanes (TTHM), haloacetic acids (HAA5), arsenic and nitrate results here are Minnesota’s own yearly summaries from 2023 on, with EPA’s national file for 2012 to 2019. Chromium (total) comes from EPA’s file alone, which ends in 2019. Federal Correctional Institution’s own annual report, which it must send you every year, has newer results for those and the contaminants this page does not show.
Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.
Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; Minnesota’s yearly summaries cover 2023 to 2025; EPA’s compliance samples are from Nov. 13, 2014 to Nov. 13, 2014.

Testing your own tap

Federal Correctional Institution’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Minnesota certifies.

The 2 labs Minnesota certifies closest to the area Federal Correctional Institution serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

Pace Analytical Services, LLC - Duluth
Duluth, MN · about 47 miles
Certified for bacteria, nitrate
(218) 727-6380
Water Laboratories, Inc.
Elk River, MN · about 73 miles
Certified for bacteria, nitrate, lead and copper, metals
(763) 441-7509