Oak Ridge Estates
EPA ID: MT0004250 · 200 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Oak Ridge Estates (MT0004250): 1 EPA violation in the last five years. Despite the 1 historical violation in its record, Oak Ridge Estates has cleared every one and now meets EPA standards serving 200 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Oak Ridge Estates Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Oak Ridge Estates serves a community with a median household income of $122,374 and an estimated 20,232 residents across its service area.
💧 Where Does Your Water Come From?
Oak Ridge Estates'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.
Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points.
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
Detected Contaminants
How Oak Ridge Estates compares to EPA limits
What This Means For You
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Comparable Water Systems
Similar-sized systems in Montana
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
Oak Ridge Estates (EPA ID: MT0004250) is a community water system in Montana that serves approximately 200 people from groundwater sources.
This system serves ZIP code 59106 in Billings.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 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, 2023 | Surface Water Treatment 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 |
|---|---|---|---|
| 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 |
|---|---|---|
| 0.005 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.
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 MT or modeled from parcel and building-footprint data.
- 59106 - Billings
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Oak Ridge Estates (MT0004250) on EPA.gov.
Frequently Asked Questions
Is Oak Ridge Estates water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Oak Ridge Estates; its 1 accepted 2021-2026 record are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Oak Ridge Estates serve?
Oak Ridge Estates serves approximately 200 people across 1 ZIP code in Montana.
Where does Oak Ridge Estates get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Oak Ridge Estates (MT): 1 EPA Violation. https://zipcheckup.com/water-system/mt0004250/
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author = {{ZipCheckup}},
title = {{Oak Ridge Estates (MT): 1 EPA Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/mt0004250/}
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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
Oak Ridge Estates (EPA ID: MT0004250) - request the latest Consumer Confidence Report or ask about specific contaminants.