Skip to content

City water profile

Roseau water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Roseau, Minnesota.

Median indexed hardness

541PPM

One indexed ZIP

Range 540.5–540.5 PPM

State comparison
223 PPM above
State hardness rank
#6 of 250
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Roseau has 1 published ZIP profile across Roseau County. The indexed median is 541 PPM, compared with 318 PPM across Minnesota.

Among the 250 Minnesotacities with an indexed median, Roseau ranks #6from highest to lowest. Across all 321 state ZIP profiles, available estimates run from 46.1to 716 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
65.5 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jan 8, 2016 to Jan 8, 2026.

ZIP directory

Water reports in Roseau

Open a ZIP for site-level provenance and measurements.

ZIP code

56751

Very Hard

540.5 PPM

Nearest site
65.5 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Roseau

PWSID MN1680003

Groundwater
System population served
2,729
Last reported
May 28, 2026

A municipal system, in-state city, and served county all agree with this Census ZCTA.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Revised Total Coliform RuleMN1680003Oct 1, 2025Resolved
ChlorineMN1680003Oct 1, 2025Archived
TTHMMN1680003Jul 1, 2021Resolved
Total Haloacetic Acids (HAA5)MN1680003Jul 1, 2021Archived
Revised Total Coliform RuleMN1680003Mar 1, 2021Resolved
ChlorineMN1680003Jan 1, 2021Archived

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Roseau

Is the water hard?

The indexed city median is 541 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.