Oskaloosa Municipal Water Department
EPA ID: IA6273005 · 12,808 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for Oskaloosa Municipal Water Department (IA6273005): 3 EPA violations in the last five years. A total of 3 EPA violations spanning the past five monitoring years sit on Oskaloosa Municipal Water Department's record - every finding has been officially cleared, and the supplier now holds current compliance status for its service population of approximately 12,808 people, with no outstanding enforcement of any kind.
Data: EPA SDWIS
Service Area Map
Coverage area for Oskaloosa Municipal Water Department Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Oskaloosa Municipal Water Department serves a community with a median household income of $64,357 and an estimated 14,943 residents across its service area. Approximately 79% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Oskaloosa Municipal Water Department'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.
Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points. Surface water sources near wastewater outfalls may face additional treatment challenges.
Infrastructure Risk
Detected Contaminants
How Oskaloosa Municipal Water Department compares to EPA limits
What This Means For You
Atrazine at 2 mg/L exceeds the EPA maximum of 0.003 mg/L. Endocrine disruption, cardiovascular & reproductive effects. Consider granular activated carbon (GAC) filtration.
Consumer Confidence Report Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Atrazine was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →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
Oskaloosa Municipal Water Department (EPA ID: IA6273005) is a community water system in Iowa that serves approximately 12,808 people from surface water sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 3 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| January 1, 2024 | Atrazine | Non-health-based | Resolved |
| October 1, 2023 | Atrazine | Non-health-based | Resolved |
| February 1, 2021 | Consumer Confidence Report Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Atrazine | Organic | 2 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0013 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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Oskaloosa Municipal Water Department (IA6273005) on EPA.gov.
Frequently Asked Questions
Is Oskaloosa Municipal Water Department water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Oskaloosa Municipal Water Department; its 3 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Oskaloosa Municipal Water Department serve?
Oskaloosa Municipal Water Department serves approximately 12,808 people across 2 ZIP codes in Iowa.
Where does Oskaloosa Municipal Water Department 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.
- #37 / 50 Most Disadvantaged Populations Served (Iowa)
- #10 / 24 Highest Exposure Burden (Iowa)
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Oskaloosa Municipal Water Department (IA): 3 EPA Violations. https://zipcheckup.com/water-system/ia6273005/
@misc{zipcheckup-water-system-ia6273005,
author = {{ZipCheckup}},
title = {{Oskaloosa Municipal Water Department (IA): 3 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ia6273005/}
}
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
Oskaloosa Municipal Water Department (EPA ID: IA6273005) - request the latest Consumer Confidence Report or ask about specific contaminants.