Clear Lake
EPA ID: SD4600092 · 1,218 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Clear Lake (SD4600092): no EPA violations recorded in the last five years. In the most recent five-year monitoring window, Clear Lake posted zero EPA violations serving 1,218 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Clear Lake Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Clear Lake serves a community with a median household income of $71,250 and an estimated 1,834 residents across its service area. Approximately 80% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Clear Lake's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
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
Clear Lake (EPA ID: SD4600092) is a community water system in South Dakota that serves approximately 1,218 people from groundwater sources.
This system serves ZIP code 57226 in Clear Lake.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.008 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.
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.
- 57226 - Clear Lake
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Clear Lake (SD4600092) on EPA.gov.
Frequently Asked Questions
Is Clear Lake water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Clear Lake 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 Clear Lake serve?
Clear Lake serves approximately 1,218 people across 1 ZIP code in South Dakota.
Where does Clear Lake get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Clear Lake Water Quality Report, SD. https://zipcheckup.com/water-system/sd4600092/
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title = {{Clear Lake Water Quality Report, SD}},
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url = {https://zipcheckup.com/water-system/sd4600092/}
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