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Federal water data

County water report

Wibaux County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Wibaux County, Montana.

Water grade

F

Water score

9.4

State rank

#46

of 55

Health violations

2

EPA SDWIS, 5-year lookback

Watershed impaired

0.0%

8 water bodies assessed

Monitoring sites

N/A

EPA Water Quality Portal

Live streamflow

No gauge

Primary USGS station not mapped

Water at a glance

Key Water Indicators for Wibaux County

EPA SDWIS

Safety Grade

F

Score: 9.4 / 100

EPA SDWIS

Active Violations

2

5-year health-based lookback

EPA ATTAINS

Watershed Health

0% impaired

8 bodies assessed

USGS NWIS

Streamflow Snapshot

No gauge

Primary USGS gauge not mapped

EPA WQP

Monitoring Sites

N/A

Rolling 5-year window

Source: EPA SDWIS · Safe Drinking Water Information System

Drinking Water Compliance

Compliance grade

F

Based on EPA SDWIS compliance history.

Water score

Higher scores indicate cleaner recent compliance records.

9.4/100

Health violations

2

Health-based violations

Violations per 100K served

363.6

Population-normalized SDWIS rate

Editorial analysis

Understanding Wibaux County’s Water

Drinking Water Quality Overview

EPA SDWIS

Wibaux County's water systems carry a failing grade, scoring 9.4 out of 100. Over the past five years, EPA SDWIS records 2 health-based violations — a small cluster that warrants attention.

Watershed Conditions

EPA ATTAINS

Under the Clean Water Act §303(d), EPA ATTAINS tracks whether waterways meet quality standards for drinking, recreation, and aquatic life (reporting cycle: 2022). None of the assessed waterways are listed as impaired (0 of 8 water bodies) across Wibaux County's watersheds. Impairment does not mean tap water is unsafe — it measures ambient waterway conditions upstream of treatment, not finished drinking water.

Editorial advisory

What the data suggests for Wibaux County

Water Verdict

Wibaux County receives a poor water quality assessment with a grade of F and a score of 9.4 out of 100. The water supply has documented quality issues. Residents are strongly encouraged to use filtered or bottled water for drinking and to stay informed about utility improvement plans.

Violation Context

Wibaux County has recorded 2 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 363.6 violations per 100,000 people served, this rate is high and signals significant water quality management issues.

Consumer Guidance

Drinking-water compliance in Wibaux County is rated Grade F, reflecting significant health-based violations in the recent reporting period. Wibaux County's drinking-water compliance score is 9.4 out of 100. An NSF 53 or NSF 58-certified filter is recommended for drinking and cooking water. Check the Consumer Confidence Report from your utility to identify the specific contaminants and required corrective actions — utilities are legally required to notify customers of violations.

Regional Context

Wibaux County has poorer water quality than the average county in Montana. Its water score is 39.5 points lower than the state average, suggesting more challenges with contamination control or infrastructure than neighboring counties.

Advisory text summarizes county-level public records and is not a replacement for your utility's current Consumer Confidence Report or direct local notices.

Contaminants & Resources

Key issues flagged in Wibaux County's water environment

Official EPA Resources for Wibaux County

EPA How's My Waterway

Interactive watershed health data for Wibaux County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Wibaux County

Consumer Confidence Reports (MT)

Annual water quality reports from utilities in Montana

Clean Water Act §303(d)

Watershed Health

Impaired Water Bodies

0.0%

0 of 8 assessed

Mostly healthy

Top Impairment Causes

No specific impairment causes reported for the assessed water bodies in this county.

Source: EPA ATTAINS · Reporting cycle 2022

Impairment is determined under the Clean Water Act §303(d): a water body is impaired when it fails to meet state-defined quality standards for designated uses (drinking, recreation, aquatic life). Assessment coverage varies by state; counties without assessed water bodies are not shown.

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Filter Cost

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Safety Grade for Wibaux County:C — Moderate

Some violations or watershed impairment detected.

Estimates use the national average residential water rate ($0.0068/gal, EPA/AWWA 2023) and EPA WaterSense per-person consumption baseline (75 gal/person/day). Actual bills vary by utility, usage tier, and local infrastructure fees. For informational purposes only.

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Frequently Asked Questions

What is the water quality in Wibaux County, Montana?
Wibaux County, Montana has a drinking-water quality grade of F with a score of 9.4/100, based on EPA SDWIS compliance data. The county has 2 health-based drinking water violations over the past 5 years. Watershed health, monitoring records, and streamflow snapshots are reported separately on this page.
Are there any water violations in Wibaux County?
Wibaux County has 2 health-based drinking water violations recorded by the EPA over the past 5 years. Health-based violations indicate instances where contaminant levels exceeded EPA Maximum Contaminant Levels (MCLs). Violations may have been resolved — check with your local water utility for current status.
How healthy are the watersheds in Wibaux County?
EPA ATTAINS assessments under Clean Water Act §303(d) indicate 0.0% of Wibaux County's 8 assessed water bodies are classified as impaired (0 impaired). Impairment means the water body fails to meet state quality standards for at least one designated use — drinking water source, recreation, aquatic life, or fish consumption. Note: watershed impairment doesn't always translate to tap-water issues; treatment plants can remove most regulated contaminants.
How does Wibaux County water compare to the Montana average?
Wibaux County's SDWIS water quality score of 9.4/100 is lower than the Montana state average of 48.9. The average water quality grade across Montana is D, based on data from 55 counties with available SDWIS data.
Is tap water safe to drink in Wibaux County?
Based on EPA SDWIS data, Wibaux County has a water quality grade of F (9.4/100). This indicates below-average compliance with significant violations. Residents may want to consider home water filtration or independent testing. The grade speaks to the public water system, not the watershed — for watershed-level concerns, see the Watershed Health zone. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).
Does Wibaux County have clean drinking water?
Wibaux County has 2 health-based drinking water violations according to EPA records. With a water quality score of 9.4/100 and grade F, the county's drinking water has had some compliance issues but continues to be monitored. Note: drinking-water compliance speaks to the public water system, not necessarily to the watershed itself — check the Watershed Health zone for ATTAINS §303(d) data.
How does Wibaux County rank for water quality in Montana?
Wibaux County ranks #46 out of 55 counties in Montana by SDWIS water quality score (1 = best). With a score of 9.4/100, it falls in the bottom third of counties statewide. The ranking reflects EPA SDWIS compliance only — not watershed impairment, monitoring density, or streamflow, which are tracked separately on this page.

Counties with Similar Water Quality

Richland County

Montana

F

8.6

Water score

Dawson County

Montana

F

13.2

Water score

Rosebud County

Montana

F

5.5

Water score

Data Sources

Drinking-water compliance data from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.

Watershed health and impaired-waterway data from the EPA ATTAINS Clean Water Act §303(d) assessments, state-reported and EPA-finalized.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

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