CITY REPORT MN

Walnut Grove, MN Water - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
0
ZIPs Linked to Systems with Violations
Zone 1
County Radon Potential (High)
$126K
Median Home Value

Walnut Grove Water: The Quick Version

  • Average of reported 90th-percentile lead results: 0.002 mg/L.
  • Homes built before 1986: 87% - older plumbing may contain lead solder.
  • Health risk index (ZipCheckup composite of CDC data): 13.85.

Water Systems Serving Walnut Grove

Listed supplier for Walnut Grove, MN: one system, of 1 on federal record.

Overview

We track home safety data for 1 ZIP code in Walnut Grove, Minnesota (population ~1,203), covering 1 community water system serving approximately 5,840 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.

Water Sources

Walnut Grove water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0020 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Areas with No Violations

ZIP Code Safety Score System Population
56180 — Red Rock Rural Water System 5,840

All ZIP Codes in Walnut Grove

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

CDC Health Data for Walnut Grove

10.2%
Asthma (US: 9.8%)
12.8%
Diabetes (US: 10.4%)
15.9%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 10.2% ↑
Diabetes 12.8% ↑
Mental Health 15.9% ↑

Vertical line = national average. ■ Above national · ■ Below national

How Old Is Walnut Grove's Housing Stock?

1957
Median Build Year
87%
Built Before 1986
67%
Built Before 1970
Galvanized Steel or Copper
Likely Pipe Material

With 87% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

Lead can reach tap water from service lines, solder and brass fittings inside a building, which is why housing age draws attention in Walnut Grove, where the median build year is 1957.

1957
Median Year Built
87%
Pre-1986 (lead solder era; lead paint banned 1978)
67%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (67%) 1970–1986 (20%) Post-1986 (13%)

Over half of homes in Walnut Grove were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

Protecting Children from Lead in Walnut Grove

87%
Homes Built Before 1986
0.002
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Frequently Asked Questions

Does Walnut Grove water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Walnut Grove is 0.002 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Walnut Grove?
Our records map 1 water system to 1 ZIP code in Walnut Grove. The related population figure in our data is approximately 1,203 people; it is not a count of people served citywide.
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How to cite this page

APA ZipCheckup. (2026). Walnut Grove, MN Water - Home Safety Score unavailable. https://zipcheckup.com/cities/mn/walnut-grove/
BibTeX
@misc{zipcheckup-cities-mn-walnut-grove,
  author = {{ZipCheckup}},
  title  = {{Walnut Grove, MN Water - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/mn/walnut-grove/}
}

Page version: October 2026.

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