COUNTY REPORT WI

Forest County, Wisconsin

7 ZIP codes · Avg score 70/100 · Grade B · Updated 2026-06-03

Recent water monitoring in Forest County shows 7 ZIP codes with consistently safe results.

How Forest County Compares

Forest County70/100
Wisconsin avg66/100
National avg68/100

How Forest County Compares

B
County Grade
70/100
Avg Safety Score
7
ZIP Codes
5
Water Systems

Forest County scores 4 points above the Wisconsin state average (66/100) and 2 points above the national average (68/100).

Data: EPA SDWIS Last verified: 2026-06-03

B
County Grade
70
Avg Safety Score
7
ZIP Codes
Best ZIP: 54566 (83/100)
Lowest ZIP: 54511 (63/100)
$178K
Median Home Value
$1,729
Avg Remediation (97% of home value)

ZIP Code Risk Map

Water Quality Map: Forest County, Wisconsin

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Key Risk Factors

Health risk index: 16.3 (asthma 11.8%, diabetes 15.6%)

Estimated additional annual cost per homeowner: $553, driven primarily by energy_code_gap

Infrastructure: 0.34% avg pipe failure probability, 14% of ZIPs at high risk

54.9% of homes built before 1978 (lead paint era)

Violation History (2022–2025)

→ Stable trend

EPA violation counts by year across Forest County water systems. Health-based shown in red, total in blue.

2022
1 (1 health)
2024
4 (4 health)
2025
2 (2 health)

Peak year: 2024 with 4 violations. Past 5 years: 7 total (7 health-based).

Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.

County Health Indicators vs National Average

Asthma 11.8% (national: 8.9%)
Diabetes 15.6% (national: 10.5%)
Obesity 45.1% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1982
Median Build Year
54.9%
Pre-1978 Housing
34%
Pipe Failure Probability
14%
ZIPs at High Infra Risk
Moderate
Lead Pipe Risk

Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $553

Energy Code Gap $244/yr
Flood $143/yr
Water / Lead $86/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

10,931 housing units in Forest County

Pre-1940 10%
1940–1959 11%
1960–1979 23%
1980–1999 34%
2000+ 22%

Source: U.S. Census Bureau ACS B25034 (Year Structure Built).

Water Safety Affordability

How much it costs to fix water issues relative to home values in Forest County

$178K
Median Home Value
$1,729
Est. Remediation Cost
1.0%
of Home Value
Remediation as % of home value low burden

Remediation costs are relatively manageable for most homeowners in Forest County, representing a small fraction of property value.

Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.

Health Outcomes vs National Average

CDC PLACES data for Forest County residents

Asthma 11.8% (US avg: 8.9%)
Diabetes 15.6% (US avg: 11%)
Obesity 45.1% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water Systems with Most Violations

Top 5 systems in Forest County ranked by EPA violation count.

# Water System Population Violations
1 Laona Sanitary District 950 9
2 Blackwell Civilian Consvtn Ctr 190 9
3 Nu Roc Health and Rehabilitation Center 86 9
4 CRANDON WATERWORKS 1,958 3
5 WABENO SANITARY DIST 1 750 0

All ZIP Codes in Forest County

7 ZIP codes tracked in Forest County.

# ZIP Code City Safety Score Grade Violations Home Value
1 54566 Wabeno 83 B 0 $178K
2 54520 Crandon 82 B 3 (1 health) $166K
3 54541 Laona 76 B 9 (3 health) $154K
4 54138 Lakewood 63 C 0 $206K
5 54175 Townsend 63 C 0 $253K
6 54465 Pickerel 63 C 0 $232K
7 54511 Argonne 63 C 0 $154K

Recommended Buyer Guides for Forest County

Editorial methodology pairs each documented risk in this county with the buyer category that addresses it, drawing on water-quality detections, housing-stock lead exposure, EPA Radon Zone designation, and FEMA flood and wildfire ratings. NSF-certified options surface where applicable, and products that match the specific contaminant take priority.

Overview

Forest County in Wisconsin covers 7 ZIP codes with an average Home Safety Score of B (70/100).

2 of 7 ZIP codes have recorded EPA violations. 4 health-based violations have been documented.

← Back to Wisconsin water quality report

Data Sources

Updated daily.

Frequently Asked Questions

Is water safe in Forest County?
Forest County receives a grade of B, indicating generally safe tap water across its 7 ZIP codes.
How many water systems serve Forest County?
Forest County is served by 5 public water systems that supply drinking water to residents across 7 ZIP codes.
What is the biggest environmental risk in Forest County?
The primary environmental risk factor in Forest County is energy_code_gap. This contributes to an estimated additional annual cost of $553 per homeowner.
How old are homes in Forest County?
The median home build year in Forest County is 1982. 54.9% of homes were built before 1978, which means they may contain lead-based paint and older plumbing materials.
How does Forest County compare to Wisconsin?
Forest County has an average water safety score of 70/100, which is above the Wisconsin state average of 66/100.

Get safety alerts for Forest, Wisconsin

Free updates when EPA data changes for this area. No spam.

Unsubscribe anytime. Privacy Policy.

Share This Page

X Facebook
Check your water filter options Free tool — no phone call required.