US Water Score: B
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
0.0
|
15 ppb | 1 ppb | Passed |
UCMR5 occurrence results are screening information, not a finding of regulatory compliance or noncompliance. PFAS rules and compliance dates are evolving.
| Compound | Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| PFHxS | 5.7 ppt | 10 ppt | 10 ppt | Below comparison value |
| PFPeA | 5.1 ppt | No standard | — | No federal MCL shown |
| PFHxA | 3.9 ppt | No standard | 400 ppt | No federal MCL shown |
Water Quality Summary
Tap water quality in Tomah, Wisconsin (54660) receives an overall grade of B (Moderate-low record-based concern) with a score of 79 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 6 points above the Wisconsin state average of 72. The area is served by Tomah Waterworks, a groundwater system providing water to approximately 9,192 people. PFAS testing detected 3 compounds, all below the EPA final MCL values used for comparison. Over the past 5 years, water systems here have accumulated 1 violations, including 1 health-based violations.
A score of 79/100 means Tomah, 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.
Health Information
Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.
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.
Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.
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
Based on public water-system records, Tomah, Wisconsin receives an internal US Water Score grade of B (Moderate-low record-based concern) with a score of 79/100. 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 54660 is served by 1 water system using groundwater sources, providing water to approximately 9,192 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 Tomah, Wisconsin are 0.0 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.
3 PFAS compounds were detected in water serving Tomah, Wisconsin, with reported values below the EPA final MCL values used by this site. This comparison is informational: federal compliance timelines and the status of some PFAS standards are still evolving. Activated carbon or reverse osmosis filters can reduce some PFAS when appropriately certified and maintained.
Water systems serving Tomah, Wisconsin have received 1 violation in the last 5 years, including 1 health-based violation. 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 Tomah, 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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