ZipCheckup grade for 57041: C.

A mixed picture - some signals here are worth your attention.

Your top priority: test this home for radon. Check your ZIP → EPA radon map

Water Quality Report

Lyons, SD (57041): High Radon Potential Area - 67/100

EPA data for Minnehaha Community Water Corporation

High County Radon Potential

EPA records for the water systems mapped to 57041 in Lyons, SD contain zero recorded violations for inclusive record years 2021 through 2026. This does not establish that every category was monitored or published, and it does not cover events outside that source window.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources

Latest air quality, EPA records and weather alerts Current data temporarily unavailable

Current EPA violation data unavailable

Safety Score

C 67/100

Water Quality No violations

Lead Risk Below action level 0.001 mg/L, 90th percentile, sample period ending 2024-12-31

NFIP Claim History N/A

Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

Water No drinking-water violations in EPA records since 2021.
Lead The reported 90th-percentile lead result of 0.001 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.

Contaminant Summary

Evidence unavailable

Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record

ZIP-level Home Safety model score: 67 / 100

Bottom 35% of U.S. ZIP codes

Water System

13,435

People Served

Health Violations (since 2021)

Groundwater

Water Source

0.001 mg/L

Reported Lead ResultBelow the national median of system results

Zone 1

County Radon Potential · High

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Score Breakdown

Overall Home Safety Score: 67/100

This is the published model score. Component and domain values are shown independently; they are not added together on this page.

Canonical components

EPA water compliance

100/100

Observed

PFAS MCL screen

100/100

Observed

EPA radon zone

0/100

Observed

Annual EPA AirData AQI

100/100

Observed

Required domains

Drinking water

100/100

Indoor environment

0/100

Outdoor environment

100/100

Coverage: 4 of 4 components and 3 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (6) HIGH

Your Water System

ZIP code 57041 in Lyons, South Dakota is mapped to the water system Minnehaha Community Water Corporation (EPA ID: SD4600432). This system provides water to approximately 13,435 people from groundwater sources.

Other Water Quality Reports in South Dakota

57001 (Alcester) - 2 violations recorded for mapped water systems
57002 (Aurora)
57003 (Baltic)
57004 (Beresford) - 2 violations recorded for mapped water systems
57005 (Brandon) - 3 violations recorded for mapped water systems
57006 (Brookings) - 3 violations recorded for mapped water systems
57007 (Brookings)
57010 (Burbank)
57012 (Canistota)
57013 (Canton) - 3 violations recorded for mapped water systems
57014 (Centerville) - 2 violations recorded for mapped water systems
57015 (Chancellor) - 2 violations recorded for mapped water systems
57016 (Chester) - 1 violation recorded for mapped water systems
57017 (Colman) - 1 violation recorded for mapped water systems
57018 (Colton)
57020 (Crooks)
57021 (Davis)
57022 (Dell Rapids) - 1 violation recorded for mapped water systems
57024 (Egan) - 3 violations recorded for mapped water systems
57025 (Elk Point)

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Minnehaha Community Water Corporation (SD4600432) on EPA.gov.

5 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →

UCMR 5 PFAS monitoring: no reportable detections in available records

Available federal UCMR5 records for water systems mapped to ZIP code 57041 show no PFAS detections among the compounds tested, at the program's reporting levels.

The EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR5) required community and non-transient non-community water systems serving 3,300 or more people to test for 29 PFAS compounds and lithium between 2023 and 2025. Systems with no detections at the federal minimum reporting level had no results at or above that reporting level.

📊 EPA UCMR5 · View source →

Environmental Hazards (10) MODERATE

Home & Infrastructure (6) OK

Cost & Community (7) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Frequently Asked Questions

Is the tap water in 57041 safe to drink?

EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 57041 (primary system: Minnehaha Community Water Corporation), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 57041's water come from?

The recorded water source for Minnehaha Community Water Corporation, a system mapped to ZIP code 57041, is Groundwater. This system serves approximately 13,435 people.

How does Lyons water compare to the national average?

Lyons's Home Safety Score ranks lower than 65% of U.S. ZIP codes, and lower than 80% of ZIP codes within South Dakota.

How can I get my water tested in Lyons?

If Minnehaha Community Water Corporation supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

Is lead a concern in 57041 tap water?

The Lead and Copper Rule record selected for 57041 reports a 90th-percentile lead result of 0.001 mg/L for a water system mapped to this ZIP (record date 2024-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.

What is the radon risk for 57041?

57041 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Minnehaha County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

How to cite this page

APA ZipCheckup. (2026). Lyons, SD (57041): High Radon Potential Area - 67/100. https://zipcheckup.com/report/57041/

BibTeX

@misc{zipcheckup-report-57041,
  author = {{ZipCheckup}},
  title  = {{Lyons, SD (57041): High Radon Potential Area - 67/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/57041/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 57041

ZIP Code	City, State	Distance	Grade
57020	Crooks, SD	4.9 mi	C
57109	Sioux Falls, SD	5.4 mi	N/A
57117	Sioux Falls, SD	5.4 mi	C
57118	Sioux Falls, SD	5.4 mi	N/A
57193	Sioux Falls, SD	5.4 mi	N/A
57197	Sioux Falls, SD	5.4 mi	N/A
57198	Sioux Falls, SD	5.4 mi	N/A
57003	Baltic, SD	5.7 mi	C
57018	Colton, SD	6.3 mi	C
57033	Hartford, SD	8.8 mi	C