Mulino Water District
EPA ID: OR4100547 · 700 people served · 4 ZIP codes
ZipCheckup's reading of EPA records for Mulino Water District (OR4100547): 9 violations on record since 2021. Per the federal file, all 9 violations logged for Mulino Water District carry a resolved status, and around 700 people get water from this system.
Data: EPA SDWIS
Service Area Map
Coverage area for Mulino Water District Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Mulino Water District have a median household income of $104,876 and about 88,961 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 57% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Mulino Water District'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.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Oregon
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
Mulino Water District (EPA ID: OR4100547) is a community water system in Oregon that serves approximately 700 people from groundwater sources.
This system provides water to 4 ZIP codes across 4 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 9 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 |
|---|---|---|---|
| July 1, 2025 | Consumer Confidence Rule | Non-health-based | Resolved |
| July 1, 2024 | Consumer Confidence Rule | Non-health-based | Resolved |
| July 1, 2023 | Lead and Copper Rule | Non-health-based | Resolved |
| January 1, 2023 | Lead and Copper Rule | Non-health-based | Resolved |
| January 1, 2023 | Lead and Copper Rule | Non-health-based | Resolved |
| July 1, 2021 | Lead and Copper Rule | Non-health-based | Resolved |
| July 1, 2021 | Lead and Copper Rule | Non-health-based | Resolved |
| July 1, 2021 | Lead and Copper Rule | Non-health-based | Resolved |
| July 1, 2021 | Lead and Copper 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 |
|---|---|---|---|
| Lead and Copper Rule | Monitoring & Reporting | 7 | No |
| Consumer Confidence Rule | Other (notice or report rule) | 2 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.005 mg/L | 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
4 of 4 ZIP records with known zones are in EPA Radon Zone 3.
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 OR 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 Mulino Water District (OR4100547) on EPA.gov.
Frequently Asked Questions
Is Mulino Water District water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Mulino Water District; its 9 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Mulino Water District serve?
Mulino Water District serves approximately 700 people across 4 ZIP codes in Oregon.
Where does Mulino Water District get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Mulino Water District (OR): 9 EPA Violations. https://zipcheckup.com/water-system/or4100547/
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author = {{ZipCheckup}},
title = {{Mulino Water District (OR): 9 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/or4100547/}
}
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
Mulino Water District (EPA ID: OR4100547) - request the latest Consumer Confidence Report or ask about specific contaminants.