Tolstoy, SD (57475): High Radon Potential Area
EPA data for Web Water Development Association
EPA records for the water systems mapped to 57475 in Tolstoy, 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
At a Glance
- Water No drinking-water violations in EPA records since 2021.
- Lead The reported 90th-percentile lead result of 0.002 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.
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Score Breakdown
Overall Home Safety Score: Score unavailable
Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.
Canonical components
Required domains
Coverage: 3 of 4 components and 2 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (5) HIGH
Your Water System
ZIP code 57475 in Tolstoy, South Dakota is mapped to the water system Web Water Development Association (EPA ID: SD4601089). This system provides water to approximately 20,750 people from surface water 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
- 57466 (Onaka) - 8 mi
- 57450 (Hoven) - 9 mi
- 57455 (Lebanon) - 12 mi
- 57473 (Seneca) - 13 mi
- 57428 (Bowdle) - 20 mi
- 57442 (Gettysburg) - 20 mi
- 57438 (Faulkton) - 21 mi
- 57452 (Java) - 22 mi
- 57471 (Roscoe) - 23 mi
- 57420 (Akaska) - 27 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Web Water Development Association (SD4601089) 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.
UCMR 5 PFAS monitoring: no reportable detections in available records
Available federal UCMR5 records for water systems mapped to ZIP code 57475 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.
Environmental Hazards (10) HIGH
Home & Infrastructure (6) HIGH
Cost & Community (7) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Tolstoy
Based on local data for ZIP 57475, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Gutter Installation & Repair
The median home in 57475 was built around 1975. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsWindow Replacement
The median build year of homes in Tolstoy is 1975; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
Estimate Your Home Maintenance CostsRoofing Inspection & Repair
Homes built around 1975 may be on their second or third roof. A professional inspection can catch damage before leaks start.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 57475 safe to drink?
EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 57475 (primary system: Web Water Development Association), 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 57475's water come from?
The recorded water source for Web Water Development Association, a system mapped to ZIP code 57475, is Surface water. This system serves approximately 20,750 people.
How can I get my water tested in Tolstoy?
If Web Water Development Association 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 57475 tap water?
The Lead and Copper Rule record selected for 57475 reports a 90th-percentile lead result of 0.002 mg/L for a water system mapped to this ZIP (record date 2025-12-31). 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 57475?
57475 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Potter 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
ZipCheckup. (2026). Tolstoy, SD (57475): High Radon Potential Area. https://zipcheckup.com/report/57475/
@misc{zipcheckup-report-57475,
author = {{ZipCheckup}},
title = {{Tolstoy, SD (57475): High Radon Potential Area}},
year = {2026},
url = {https://zipcheckup.com/report/57475/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 57475
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 57466 | Onaka, SD | 8.1 mi | N/A | 0 |
| 57450 | Hoven, SD | 8.7 mi | N/A | 0 |
| 57455 | Lebanon, SD | 12.4 mi | N/A | 0 |
| 57473 | Seneca, SD | 12.5 mi | N/A | 0 |
| 57428 | Bowdle, SD | 19.6 mi | N/A | 0 |
| 57442 | Gettysburg, SD | 20.2 mi | N/A | 0 |
| 57438 | Faulkton, SD | 21.4 mi | N/A | 0 |
| 57452 | Java, SD | 21.7 mi | N/A | 0 |
| 57471 | Roscoe, SD | 22.5 mi | N/A | 0 |
| 57420 | Akaska, SD | 26.8 mi | N/A | 0 |
Nearby ZIP Code Reports
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