Milbank
EPA ID: SD4600207 · 3,544 people served · 4 ZIP codes
ZipCheckup's reading of EPA records for Milbank (SD4600207): no drinking-water violations recorded since 2021. Milbank is listed without violations in federal records, across a service area of 3,544 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Milbank Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Milbank have a median household income of $78,271 and about 6,752 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 67% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Milbank'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
Milbank (EPA ID: SD4600207) is a community water system in South Dakota that serves approximately 3,544 people from groundwater sources.
This system provides water to 4 ZIP codes across 4 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 mg/L | No | 2025-12-31 |
The accepted LCR snapshot contains 1 reported copper action-level exceedance record for this PWSID. The source does not provide a verified copper level for publication.
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Milbank (SD4600207) on EPA.gov.
Frequently Asked Questions
Is Milbank water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Milbank 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 Milbank serve?
Milbank serves approximately 3,544 people across 4 ZIP codes in South Dakota.
Where does Milbank get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Milbank Water Quality Report, SD. https://zipcheckup.com/water-system/sd4600207/
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author = {{ZipCheckup}},
title = {{Milbank Water Quality Report, SD}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/sd4600207/}
}