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Brook Park

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
133 people
Connections
54
Water source
Groundwater
Based in
Brook Park, MN
County
Pine
Owner
Local government
The ZIP code it serves

55007

The short answer

1 result is above EPA’s legal limit. The worst: Haloacetic acids (HAA5), above the legal limit. 7 health-based violations since 2016.

What was found

Haloacetic acids (HAA5), total trihalomethanes (TTHM), arsenic and nitrate: Minnesota’s yearly summaries per water system, 2023 to 2025, with EPA’s 2012 to 2019 file for earlier years.

Fluoride, chromium (total) and uranium: EPA’s compliance monitoring file, samples taken from Feb. 7, 2012 to Nov. 13, 2019. Newer results are in the utility’s annual water quality report.

Above the legal limit1

Haloacetic acids (HAA5)

Forms or is added in treatment

Above the legal limit

49.3ppb

Highest yearly average, 2023 to 2025

2025 average: 28.2 ppb

Averaged by year, the highest was 49.3 ppb, in 2023, below EPA’s legal limit of 60 ppb. In 2025, the latest year on file, it averaged 28.2 ppb. EPA judges this limit at each sampling point, and recorded a violation for haloacetic acids (HAA5) at this utility in 2022.

What handles it

No certification claim covers this compound yet.

Below EPA’s limits2

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

55.6ppb

Highest yearly average, 2023 to 2025

2025 average: 35.5 ppb

Averaged by year, the highest was 55.6 ppb, in 2023, below EPA’s legal limit of 80 ppb. In 2025, the latest year on file, it averaged 35.5 ppb.

What handles it

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

Fluoride

Forms or is added in treatment

Below EPA’s limits

1.3ppm

Highest yearly average, 2012 to 2019

2019: not found

Averaged by year, the highest was 1.3 ppm, in 2015, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 1.5 ppm. In 2019, the latest year on file, it wasn’t found in any of its three samples.

What handles it

5 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Lead
  • Nitrate
  • Uranium

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2026 to March 31, 20260.0033 MG/LArchived
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2025 to Dec. 31, 20250.012 MG/LArchived
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2025 to Sept. 30, 20250.021 MG/LArchived
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2024 to Sept. 30, 20240.037 MG/LArchived
Total Haloacetic Acids (HAA5)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2022 to June 30, 20220.063 MG/LArchived
Combined Radium (-226 and -228)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2019 to June 30, 20198.6 PCI/LResolved
Combined Radium (-226 and -228)The running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2018 to Dec. 31, 20189.1 PCI/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 9 monitoring or reporting violations not shown.

What this report can’t tell you

  • Everything else. Haloacetic acids (HAA5), total trihalomethanes (TTHM), arsenic and nitrate results here are Minnesota’s own yearly summaries from 2023 on, with EPA’s national file for 2012 to 2019. Fluoride, chromium (total) and uranium come from EPA’s file alone, which ends in 2019. Brook Park’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 Feb. 7, 2012 to Nov. 13, 2019.

Testing your own tap

Brook Park’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 3 labs Minnesota certifies closest to the area Brook Park serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Water Laboratories, Inc.

    Elk River, MN · about 49 miles

    Certified for bacteria, nitrate, lead and copper, metals

    (763) 441-7509

  • A.W. Research Laboratories, Inc.

    Brainerd, MN · about 54 miles

    Certified for bacteria, nitrate, lead and copper, metals

    (218) 829-7974

  • Traut Water Analysis Lab

    St. Joseph, MN · about 61 miles

    Certified for bacteria, nitrate

    (320) 251-5090

All 24 certified labs for Minnesota

Sources

PWSID MN1580017. Rebuilt from EPA data on Oct. 18, 2026.

Nearby

All Minnesota utilities

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