Grand Ronde Community Wtr Assn
EPA ID: OR4100338 · 2,500 people served · 6 ZIP codes
ZipCheckup's reading of EPA SDWIS for Grand Ronde Community Wtr Assn (OR4100338): 5 EPA violations in the last five years. Grand Ronde Community Wtr Assn carries 5 resolved violations in the five-year EPA record - each has been formally closed, and the supplier, which serves approximately 2,500 people, now meets all applicable federal drinking water standards with no open enforcement activity remaining.
Data: EPA SDWIS
Service Area Map
Coverage area for Grand Ronde Community Wtr Assn Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Grand Ronde Community Wtr Assn serves a community with a median household income of $62,322 and an estimated 52,937 residents across its service area. Approximately 54% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Grand Ronde Community Wtr Assn's water is pumped from underground aquifers. 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
Detected Contaminants
How Grand Ronde Community Wtr Assn compares to EPA limits
What This Means For You
Total Coliform at 1 presence exceeds the EPA maximum of presence.
Gross Alpha at 1 pCi/L exceeds the EPA maximum of pCi/L. Increased cancer risk from radioactive particles. Consider reverse osmosis filtration.
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Gross Alpha was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →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
Grand Ronde Community Wtr Assn (EPA ID: OR4100338) is a community water system in Oregon that serves approximately 2,500 people from groundwater sources.
This system provides water to 6 ZIP codes across 6 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 5 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, 2024 | Surface Water Treatment Rule | Non-health-based | Resolved |
| January 2, 2023 | Total Coliform | Non-health-based | Resolved |
| April 1, 2021 | Combined Radium | Non-health-based | Resolved |
| April 1, 2021 | Gross Beta | Non-health-based | Resolved |
| April 1, 2021 | Gross Alpha | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Coliform | Microbiological | 1 | No |
| Gross Alpha | Radionuclides | 1 | No |
| Combined Radium | Radionuclides | 1 | No |
| Gross Beta | Radionuclides | 1 | No |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0023 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 3 (Low Risk)
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 OR or modeled from parcel and building-footprint data.
- 97338 - Dallas
- 97344 - Falls City
- 97347 - Grand Ronde
- 97361 - Monmouth
- 97378 - Sheridan
- 97396 - Willamina
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Grand Ronde Community Wtr Assn (OR4100338) on EPA.gov.
Frequently Asked Questions
Is Grand Ronde Community Wtr Assn water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Grand Ronde Community Wtr Assn; its 5 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Grand Ronde Community Wtr Assn serve?
Grand Ronde Community Wtr Assn serves approximately 2,500 people across 6 ZIP codes in Oregon.
Where does Grand Ronde Community Wtr Assn get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Grand Ronde Community Wtr Assn (OR): 5 EPA Violations. https://zipcheckup.com/water-system/or4100338/
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author = {{ZipCheckup}},
title = {{Grand Ronde Community Wtr Assn (OR): 5 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/or4100338/}
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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
Grand Ronde Community Wtr Assn (EPA ID: OR4100338) - request the latest Consumer Confidence Report or ask about specific contaminants.