Clear Lake
EPA ID: SD4600092 · 1,218 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Clear Lake (SD4600092): no drinking-water violations recorded since 2021. Clear Lake is listed without violations in federal records, across a service area of 1,218 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Clear Lake Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Clear Lake have a median household income of $71,250 and about 1,834 residents live in those ZIP codes (Census; not the number of people this system supplies). 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 classified in EPA records as a groundwater source. 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
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 | 2023-12-31 |
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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 available EPA compliance records 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/
@misc{zipcheckup-water-system-sd4600092,
author = {{ZipCheckup}},
title = {{Clear Lake Water Quality Report, SD}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/sd4600092/}
}