Skip to content
TapBuff
ZIP

Murdock

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
306 people
Connections
140
Water source
Groundwater
Based in
Murdock, MN
County
Swift
Owner
Local government
The ZIP code it serves

56271

The short answer

1 result is above the health goal. The worst: Lead, above the health goal. No health-based violations on file since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2017 to 2024.

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

Fluoride and chromium (total): EPA’s compliance monitoring file, samples taken from Jan. 17, 2012 to Oct. 30, 2019. Newer results are in the utility’s annual water quality report.

Above the health goal1

Lead

Comes from pipes, often your own

Above the health goal

1.0ppb

90th percentile, 2022 to 2024

In the latest period, 9 in 10 homes sampled were at or below 1.0 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

What handles it

Below EPA’s limits4

Fluoride

Forms or is added in treatment

Below EPA’s limits

1.1ppm

Highest yearly average, 2012 to 2019

Averaged by year, the highest was 1.1 ppm, in 2019, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 1.2 ppm. That was also the latest year on file.

What handles it

Nitrate

Comes from the source

Below EPA’s limits

0.7ppm

Highest yearly average, 2023 to 2025

Averaged by year, the highest was 0.7 ppm, in 2025, below EPA’s legal limit of 10 ppm. That was also the latest year on file.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

3.7ppb

Highest yearly average, 2023 to 2025

2025 average: 2.1 ppb

Averaged by year, the highest was 3.7 ppb, in 2023, below EPA’s legal limit of 60 ppb. In 2025, the latest year on file, it averaged 2.1 ppb.

What handles it

No certification claim covers this compound yet.

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

3.5ppb

Highest yearly average, 2023 to 2025

2025 average: 1.6 ppb

Averaged by year, the highest was 3.5 ppb, in 2023, below EPA’s legal limit of 80 ppb. In 2025, the latest year on file, it averaged 1.6 ppb.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
2 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Compare five-year costs

The best water filters for lead, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There are 2 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Nitrate, haloacetic acids (HAA5), total trihalomethanes (TTHM) and arsenic results here are Minnesota’s own yearly summaries from 2023 on, with EPA’s national file for 2012 to 2019. Fluoride and chromium (total) come from EPA’s file alone, which ends in 2019. Murdock’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 Jan. 17, 2012 to Oct. 30, 2019.

Testing your own tap

Murdock’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 Murdock serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Steven M. Traut Wells, Inc.

    Alexandria, MN · about 44 miles

    Certified for bacteria, nitrate

    (320) 762-1528

  • Southwest Health and Human Services

    Marshall, MN · about 58 miles

    Certified for bacteria, nitrate

    (507) 537-6713

  • 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 MN1760007. Rebuilt from EPA data on Oct. 18, 2026.

Also in Swift County

All Minnesota utilities

What to do next