Kingbrook Iii Rural Water System
EPA ID: SD4600874 · 2,888 people served · 11 ZIP codes
ZipCheckup's reading of EPA records for Kingbrook Iii Rural Water System (SD4600874): no drinking-water violations recorded since 2021. Kingbrook Iii Rural Water System is listed without violations in federal records, across a service area of 2,888 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Kingbrook Iii Rural Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Kingbrook Iii Rural Water System have a median household income of $88,839 and about 17,387 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 69% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Kingbrook Iii Rural Water System'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
Kingbrook Iii Rural Water System (EPA ID: SD4600874) is a community water system in South Dakota that serves approximately 2,888 people from groundwater sources.
This system provides water to 11 ZIP codes across 11 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.003 mg/L | No | 2025-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
11 of 11 ZIP records with known zones are in EPA Radon Zone 1.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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.
- 57016 - Chester
- 57018 - Colton
- 57042 - Madison
- 57048 - Montrose
- 57050 - Nunda
- 57054 - Ramona
- 57058 - Salem
- 57075 - Wentworth
- 57076 - Winfred
- 57349 - Howard
- 57374 - Spencer
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Kingbrook Iii Rural Water System (SD4600874) on EPA.gov.
Frequently Asked Questions
Is Kingbrook Iii Rural Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Kingbrook Iii Rural Water System 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 Kingbrook Iii Rural Water System serve?
Kingbrook Iii Rural Water System serves approximately 2,888 people across 11 ZIP codes in South Dakota.
Where does Kingbrook Iii Rural Water System get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Kingbrook Iii Rural Water System Water Quality Report, SD. https://zipcheckup.com/water-system/sd4600874/
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author = {{ZipCheckup}},
title = {{Kingbrook Iii Rural Water System Water Quality Report, SD}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/sd4600874/}
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