Webster
EPA ID: SD4600360 · 1,728 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Webster (SD4600360): no EPA violations recorded in the last five years. Federal monitoring spanning five full years has produced zero violations at Webster - a clean record across every reporting cycle for a utility serving approximately 1,728 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Webster Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Webster serves a community with a median household income of $69,844 and an estimated 2,611 residents across its service area. Approximately 85% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 100% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Webster's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in South Dakota
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Webster (EPA ID: SD4600360) is a community water system in South Dakota that serves approximately 1,728 people from surface water sources.
This system serves ZIP code 57274 in Webster.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.003 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by SD or modeled from parcel and building-footprint data.
- 57274 - Webster
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Webster (SD4600360) on EPA.gov.
Frequently Asked Questions
Is Webster water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Webster in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Webster serve?
Webster serves approximately 1,728 people across 1 ZIP code in South Dakota.
Where does Webster get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Webster Water Quality Report, SD. https://zipcheckup.com/water-system/sd4600360/
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author = {{ZipCheckup}},
title = {{Webster Water Quality Report, SD}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/sd4600360/}
}