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County water report

Chippewa County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Chippewa County, Wisconsin.

Water grade

C

Water score

56.0

State rank

#15

of 71

Health violations

3

EPA SDWIS, 5-year lookback

Watershed impaired

5.4%

809 water bodies assessed

Monitoring sites

99

9,829 recent measurements

Live streamflow

72%

CHIPPEWA RIVER AT CHIPPEWA FALLS, WI

Water at a glance

Key Water Indicators for Chippewa County

EPA SDWIS

Safety Grade

C

Score: 56.0 / 100

EPA SDWIS

Active Violations

3

5-year health-based lookback

EPA ATTAINS

Watershed Health

5% impaired

809 bodies assessed

USGS NWIS

Streamflow Snapshot

72% of mean

CHIPPEWA RIVER AT CHIPPEWA FALLS, WI

EPA WQP

Monitoring Sites

99

9,829 recent readings

Source: EPA SDWIS · Safe Drinking Water Information System

Drinking Water Compliance

Compliance grade

C

Based on EPA SDWIS compliance history.

Water score

Higher scores indicate cleaner recent compliance records.

56.0/100

Health violations

3

Health-based violations

Violations per 100K served

9.6

Population-normalized SDWIS rate

Editorial analysis

Understanding Chippewa County’s Water

Drinking Water Quality Overview

EPA SDWIS

Chippewa County's drinking water earned a C grade, scoring 56.0 out of 100. Over the past five years, EPA SDWIS records 3 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). A small share — 5.4% — of assessed waterways are impaired (44 of 809 water bodies) across Chippewa County's watersheds. The leading impairment causes are phosphorus, total and mercury. Impairment does not mean tap water is unsafe — it measures ambient waterway conditions upstream of treatment, not finished drinking water.

River & Streamflow Status

USGS NWIS

USGS NWIS gauge data (as of 2026-05-14T14:00:00.000-05:00) puts CHIPPEWA RIVER at 3.7k cfs — running somewhat below its historical average at 72% of mean. Streamflow is a leading indicator of drought stress, sediment load, and dilution capacity: low flows concentrate pollutants and warm water temperatures, stressing aquatic life and, in surface-water-dependent systems, the source water quality for treatment plants.

Monitoring Network

EPA WQP

EPA's Water Quality Portal (WQP) aggregates monitoring data from federal, state, and tribal agencies. Chippewa County has extensive coverage with 99 active monitoring sites with 9,829 recent measurements on record. Predominant monitoring categories include organics, pesticide and physical. More monitoring sites generally indicate greater scientific attention to local water conditions — and provide the baseline data that regulators use to set future impairment listings.

Editorial advisory

What the data suggests for Chippewa County

Water Verdict

Chippewa County, Wisconsin receives a fair water quality assessment with a grade of C and a score of 56.0 out of 100. The water supply meets baseline federal standards, but there may be periods of elevated contaminant levels or infrastructure concerns worth monitoring. Separately, EPA ATTAINS assessments cover 809 water bodies in the county's watershed, with 5.4% listed as impaired under the Clean Water Act — a source-water measure that is tracked independently of tap-water compliance. At the most recent USGS reading, local streamflow was below its historical mean at 71.9% — worth watching in drier seasons.

Violation Context

EPA SDWIS records for Chippewa County, Wisconsin show 3 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 9.6 violations per 100,000 people served, this rate is high and signals significant water quality management issues. For independent context, 9,829 water-quality monitoring results have been recorded across the county in the EPA Water Quality Portal over the past five years.

Consumer Guidance

Tap water in Chippewa County meets baseline standards but the compliance record shows room for improvement, with a Grade C rating. Chippewa County's drinking-water compliance score is 56.0 out of 100. The violation rate for Chippewa County is 9.6 per 100,000 people served. Residents who are immunocompromised, pregnant, or have young children may benefit from using an NSF 53-certified filter. Contacting your local utility for the current Consumer Confidence Report will confirm which specific violations were recorded and whether they have been resolved. Phosphorus, Total is the leading impairment cause in Chippewa County's watershed. With 99 active water-quality monitoring sites in Chippewa County, data coverage is strong. A pipeline streamflow snapshot from the CHIPPEWA RIVER gauge is also available on this page.

Regional Context

Chippewa County has better water quality than the average county in Wisconsin. Its water score is 16.5 points higher than the state average, indicating stronger water system performance relative to 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 Chippewa County's water environment

Watershed Impairment Causes (EPA ATTAINS)

  • 1

    Phosphorus (excess nutrients)

    Impairment cause per EPA Clean Water Act §303(d) assessment

  • 2

    Mercury

    Impairment cause per EPA Clean Water Act §303(d) assessment

  • 3

    Total Suspended Solids (Tss)

    Impairment cause per EPA Clean Water Act §303(d) assessment

Source: EPA ATTAINS · Reporting cycle 2022

Official EPA Resources for Chippewa County

EPA How's My Waterway

Interactive watershed health data for Chippewa County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Chippewa County

Consumer Confidence Reports (WI)

Annual water quality reports from utilities in Wisconsin

Clean Water Act §303(d)

Watershed Health

Impaired Water Bodies

5.4%

44 of 809 assessed

Mostly healthy

Top Impairment Causes

  • 1

    PHOSPHORUS, TOTAL

  • 2

    MERCURY

  • 3

    TOTAL SUSPENDED SOLIDS (TSS)

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.

Past 5 years

Water Quality Monitoring

Monitoring Sites

99

Active in the past 5 years

Measurements Recorded

9.8K

9,829 total readings

Most Measured

  • Organics, Pesticide
  • Physical
  • Microbiological

Categories measured most frequently

Data from the EPA Water Quality Portal (WQP), aggregating monitoring records from federal, state, and tribal sources. Each measurement represents a single sample analyzed for a specific characteristic (e.g., E. coli, pH, dissolved oxygen, nitrogen).

Live USGS Streamgage

River & Stream Conditions

Current Discharge

3,670cfs

May 14, 7:00 PM UTC

vs Long-Term Average

72%

Below typical

Primary Streamgage

CHIPPEWA RIVER AT CHIPPEWA FALLS, WI

USGS site
05365500
Drainage area
5,650 sq mi
Long-term mean
5,108 cfs

One representative streamgage (the one with the largest drainage area in the county). Many counties have multiple gauges; this view summarizes the primary one. The long-term mean is the full-record annual average; the percent-of-typical value compares the latest reading against that average.

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Estimate Your Water Costs

Water Cost Estimate

3

3 people  ·  ~225 gal/day

Annual Total

$558

Monthly

$47

Water Bill

$558/yr

Filter Cost

$0/yr

Safety Grade for Chippewa 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 Chippewa County, Wisconsin?
Chippewa County, Wisconsin has a drinking-water quality grade of C with a score of 56.0/100, based on EPA SDWIS compliance data. The county has 3 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 Chippewa County?
Chippewa County has 3 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 Chippewa County?
EPA ATTAINS assessments under Clean Water Act §303(d) indicate 5.4% of Chippewa County's 809 assessed water bodies are classified as impaired (44 impaired). The top reported causes are PHOSPHORUS, TOTAL, MERCURY, TOTAL SUSPENDED SOLIDS (TSS). 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 much water-quality monitoring happens in Chippewa County?
EPA's Water Quality Portal records 9,829 measurements from 99 monitoring sites in Chippewa County over the past five years. The most frequently measured characteristic groups are Organics, Pesticide, Physical, Microbiological. Each measurement is a single sample analyzed for one characteristic (E. coli, pH, dissolved oxygen, etc.). High monitoring density means more scientific evidence behind any reported signal — it does not by itself indicate water quality.
What's happening with rivers in Chippewa County right now?
Chippewa County's primary USGS streamgage on the CHIPPEWA RIVER has a pipeline snapshot of 3,670 cubic feet per second — 72% of the long-term mean of 5,107.61 cfs. Flow is within typical range for this gauge. For the latest gauge feed, visit waterdata.usgs.gov.
How does Chippewa County water compare to the Wisconsin average?
Chippewa County's SDWIS water quality score of 56.0/100 is higher than the Wisconsin state average of 39.5. The average water quality grade across Wisconsin is F, based on data from 71 counties with available SDWIS data.
Is tap water safe to drink in Chippewa County?
Based on EPA SDWIS data, Chippewa County has a water quality grade of C (56.0/100). This indicates moderate compliance. Some violations have been recorded but overall standards are maintained. 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 Chippewa County have clean drinking water?
Chippewa County has 3 health-based drinking water violations according to EPA records. With a water quality score of 56.0/100 and grade C, 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 Chippewa County rank for water quality in Wisconsin?
Chippewa County ranks #15 out of 71 counties in Wisconsin by SDWIS water quality score (1 = best). With a score of 56.0/100, it falls in the top 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

Rock County

Wisconsin

C

57.1

Water score

Waupaca County

Wisconsin

C

58.1

Water score

St. Croix County

Wisconsin

C

53.8

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.

Water-quality monitoring counts from the EPA Water Quality Portal (WQP), federated USGS, EPA, and state agency sampling records over a rolling 5-year window.

Live streamflow from the USGS National Water Information System (NWIS), continuous discharge measurements from the largest-drainage gauge in each county, compared against the full-record long-term annual mean.

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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