A
87

Excellent Water Quality

Steen, MN 56173

Rock County · Population served: 180 · Data updated March 2026

Water Systems Serving This Area

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Steen
Groundwater · Pop. 180
PWSID: MN1670006

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Copper
1500.0
1300 ppb 300 ppb Exceeded

Violation History (Last 5 Years)

3Total (5yr)
0Health-Based
2Major

Water Quality Summary

Understanding Your Water in Steen

Tap water quality in Steen, Minnesota (56173) receives an overall grade of A (Excellent) with a score of 87 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is roughly in line with the Minnesota state average of 88. Compared to the national average (75), this area performs significantly better. The area is served by Steen, a groundwater system providing water to approximately 180 people. Testing has found elevated levels of Copper that warrant attention.

Your Score 87/100 A
vs State 1 pts below Minnesota avg (88)
vs National 12 pts above national avg (75)

What a Grade A Means

A score of 87/100 means the water supply in Steen, MN meets or exceeds all EPA standards with minimal issues. Contaminant levels are well within safe limits, and the water system has maintained a strong compliance record. While no water supply is guaranteed perfect at the tap due to household plumbing, this is among the best-scoring areas in the country.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

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Copper in Your Water

Copper can leach into water from copper plumbing, especially in newer homes or when water is acidic.

Health Effects

Short-term exposure above 1,300 ppb can cause gastrointestinal distress. Long-term exposure may cause liver or kidney damage. People with Wilson's disease are especially vulnerable.

Common Sources

Copper pipes, fittings, and faucets are the most common source. Corrosive (low-pH) water accelerates copper leaching.

What You Can Do

If copper levels are elevated, flush pipes by running water for 15–30 seconds before use. Reverse osmosis and distillation systems effectively remove copper.

Common Questions

Frequently Asked Questions

Based on EPA data, tap water in Steen, Minnesota receives a grade of A (Excellent) with a score of 87/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.

ZIP code 56173 is served by 1 water system using groundwater sources, providing water to approximately 180 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.

No lead data is currently available for ZIP code 56173. This may mean lead testing results haven't been reported recently, or the serving water system uses monitoring waivers. You can request a free lead test kit from most water utilities or purchase a certified home testing kit.

No PFAS ("forever chemicals") were detected in water systems serving Steen, Minnesota during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.

Water systems serving Steen, Minnesota have received 3 violations 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 (copper), residents in Steen, Minnesota should consider: Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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