Lyon-sioux Rws-rock Rapids
EPA ID: IA6000800 · 1,187 people served · 4 ZIP codes
ZipCheckup's reading of EPA records for Lyon-sioux Rws-rock Rapids (IA6000800): no drinking-water violations recorded since 2021. Across the monitored periods in available EPA data, Lyon-sioux Rws-rock Rapids has no violations listed for its service population of 1,187.
Data: EPA SDWIS
Service Area Map
Coverage area for Lyon-sioux Rws-rock Rapids Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Lyon-sioux Rws-rock Rapids have a median household income of $75,134 and about 9,121 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 66% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Lyon-sioux Rws-rock Rapids'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 Iowa
System Overview
Lyon-sioux Rws-rock Rapids (EPA ID: IA6000800) is a community water system in Iowa that serves approximately 1,187 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 | 2024-12-31 |
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
4 of 4 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 IA 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 Lyon-sioux Rws-rock Rapids (IA6000800) on EPA.gov.
Frequently Asked Questions
Is Lyon-sioux Rws-rock Rapids water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Lyon-sioux Rws-rock Rapids 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 Lyon-sioux Rws-rock Rapids serve?
Lyon-sioux Rws-rock Rapids serves approximately 1,187 people across 4 ZIP codes in Iowa.
Where does Lyon-sioux Rws-rock Rapids get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Lyon-sioux Rws-rock Rapids Water Quality Report, IA. https://zipcheckup.com/water-system/ia6000800/
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title = {{Lyon-sioux Rws-rock Rapids Water Quality Report, IA}},
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url = {https://zipcheckup.com/water-system/ia6000800/}
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