Greatrock North Water Supply District
EPA ID: CO0101063 · 1,250 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for Greatrock North Water Supply District (CO0101063): no EPA violations recorded in the last five years. Zero EPA violations over five years - Greatrock North Water Supply District has kept tap water compliance clean for its full service population of 1,250.
Data: EPA SDWIS
Service Area Map
Coverage area for Greatrock North Water Supply District Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Greatrock North Water Supply District serves a community with a median household income of $105,620 and an estimated 75,661 residents across its service area.
💧 Where Does Your Water Come From?
Greatrock North Water Supply District'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.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 9 detections recorded. 1 exceeds federal EPA limits (4 ppt for PFOA/PFOS).
Comparable Water Systems
Similar-sized systems in Colorado
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
Greatrock North Water Supply District (EPA ID: CO0101063) is a community water system in Colorado that serves approximately 1,250 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 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 CO 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 Greatrock North Water Supply District (CO0101063) on EPA.gov.
Frequently Asked Questions
Is Greatrock North Water Supply District water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Greatrock North Water Supply District 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 Greatrock North Water Supply District serve?
Greatrock North Water Supply District serves approximately 1,250 people across 2 ZIP codes in Colorado.
Where does Greatrock North Water Supply District get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Greatrock North Water Supply District Water Report, CO. https://zipcheckup.com/water-system/co0101063/
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