B
73

US Water Score: B

Schofield, WI 54476

Marathon County · Population served: 16,000 · Data updated July 2026

Service-area evidence: EPA service-area records associate the listed system with this ZIP. Boundaries may still overlap or change.

Water Systems Serving This Area

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WESTON MUNICIPAL UTILITIES
Groundwater · Pop. 16,000
PWSID: WI7370163

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
0.75
15 ppb 1 ppb Passed

PFAS / Forever Chemicals

8 detected 2 above comparison value

UCMR5 occurrence results are screening information, not a finding of regulatory compliance or noncompliance. PFAS rules and compliance dates are evolving.

CompoundLevelEPA MCLHealth GuidelineStatus
PFBS22.0 ppt2000 ppt100 pptBelow comparison value
PFOS13.0 ppt4 ppt4 pptAbove comparison value
PFOA5.9 ppt4 ppt4 pptAbove comparison value
PFHxS5.8 ppt10 ppt10 pptBelow comparison value
PFBA5.4 pptNo standard500 pptNo federal MCL shown
6:2 FTS5.2 pptNo standardNo federal MCL shown
PFPeA4.5 pptNo standardNo federal MCL shown
PFHxA3.6 pptNo standard400 pptNo federal MCL shown

Violation History (Last 5 Years)

1Total (5yr)
0Health-Based
1Major

Water Quality Summary

Understanding Your Water in Schofield

Tap water quality in Schofield, Wisconsin (54476) receives an overall grade of B (Moderate-low record-based concern) with a score of 73 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is roughly in line with the Wisconsin state average of 72. The area is served by Weston Municipal Utilities, a groundwater system providing water to approximately 16,000 people. Notably, 2 PFAS compounds exceed the EPA final MCL value used for comparison — a significant concern given the persistent nature of these chemicals.

Your Score 73/100 B
vs State 0 pts above Wisconsin avg (72)
vs National 2 pts below national avg (75)

What a Grade B Means

A score of 73/100 means Schofield, WI performs well in the US Water Score model, with only minor system-level concerns. Residents should still review their utility's Consumer Confidence Report for official compliance information and household-specific context.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

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Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

Based on public water-system records, Schofield, Wisconsin receives an internal US Water Score grade of B (Moderate-low record-based concern) with a score of 73/100. This indicates relatively few system-level concerns in our model, but it is not an EPA safety rating and does not guarantee tap conditions inside individual homes.

ZIP code 54476 is served by 1 water system using groundwater sources, providing water to approximately 16,000 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Lead levels in Schofield, Wisconsin are 0.75 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.

Yes — 8 PFAS compounds were detected in records associated with water serving Schofield, Wisconsin, and 2 results exceeded the numerical EPA MCL value used for comparison. UCMR5 occurrence results alone are not a regulatory compliance determination. PFAS rules and compliance timelines are evolving; verify current information with the utility and EPA.

Water systems serving Schofield, Wisconsin have received 1 violation in the last 5 years. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Based on detected contaminants (PFAS), residents in Schofield, Wisconsin should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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