Rathbun Regional Water Assn (rathbun)
EPA ID: IA0400900 · 33,000 people served · 53 ZIP codes
ZipCheckup's reading of EPA SDWIS for Rathbun Regional Water Assn (rathbun) (IA0400900): no EPA violations recorded in the last five years. Five clean years on EPA record - Rathbun Regional Water Assn (rathbun), 33,000 residents served.
Data: EPA SDWIS
Service Area Map
Coverage area for Rathbun Regional Water Assn (rathbun) Source: EPA SDWIS service area boundaries.
Service area boundary - Grade C
Service Area Demographics
The Rathbun Regional Water Assn (rathbun) serves a community with a median household income of $63,046 and an estimated 119,061 residents across its service area. Approximately 73% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 46% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Rathbun Regional Water Assn (rathbun)'s water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 25 detections recorded.
Comparable Water Systems
Similar-sized systems in Iowa
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
Rathbun Regional Water Assn (rathbun) (EPA ID: IA0400900) is a community water system in Iowa that serves approximately 33,000 people from surface water sources.
This system provides water to 53 ZIP codes across 53 communities.
ZIP-Area Home Safety Context: C (67/100)
This is the average Home Safety Score for 9 of 53 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 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.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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 IA or modeled from parcel and building-footprint data.
This system serves 53 ZIP codes:
50008 · 50044 · 50049 · 50052 · 50060 50062 · 50068 · 50123 · 50138 · 50139 50144 · 50147 · 50150 · 50151 · 50238 52501 · 52531 · 52533 · 52535 · 52536 52537 · 52542 · 52544 · 52549 · 52551 52552 · 52553 · 52554 · 52555 · 52556 52560 · 52563 · 52565 · 52567 · 52569 52570 · 52571 · 52572 · 52573 · 52574 52580 · 52581 · 52583 · 52584 · 52585 52588 · 52590 · 52593 · 52594 · 52620 52626 · 52630 · 52651
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Rathbun Regional Water Assn (rathbun) (IA0400900) on EPA.gov.
Frequently Asked Questions
Is Rathbun Regional Water Assn (rathbun) water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Rathbun Regional Water Assn (rathbun) 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 Rathbun Regional Water Assn (rathbun) serve?
Rathbun Regional Water Assn (rathbun) serves approximately 33,000 people across 53 ZIP codes in Iowa.
Where does Rathbun Regional Water Assn (rathbun) get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Rathbun Regional Water Assn (rathbun), IA: Serves 33K People. https://zipcheckup.com/water-system/ia0400900/
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Rathbun Regional Water Assn (rathbun) (EPA ID: IA0400900) - request the latest Consumer Confidence Report or ask about specific contaminants.