Rathbun Regional Water Assn (rathbun)
EPA ID: IA0400900 · 33,000 people served · 53 ZIP codes
ZipCheckup's reading of EPA records for Rathbun Regional Water Assn (rathbun) (IA0400900): no drinking-water violations recorded since 2021. EPA data: Rathbun Regional Water Assn (rathbun) - zero violation entries, 33,000 served.
Data: EPA SDWIS
Service Area Map
Coverage area for Rathbun Regional Water Assn (rathbun) Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: C
Demographics of ZIP Codes Served
The ZIP codes associated with Rathbun Regional Water Assn (rathbun) have a median household income of $63,046 and about 119,061 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 73% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 46% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). 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 in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 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 |
|---|---|---|
| Below the reporting limit | 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.
Radon Risk in Service Area
53 of 53 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.
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 available EPA compliance records 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: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
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
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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.