Ralston Valley Water Supply District
EPA ID: CO0130667 · 1,610 people served · 4 ZIP codes
ZipCheckup's reading of EPA SDWIS for Ralston Valley Water Supply District (CO0130667): no EPA violations recorded in the last five years. Five clean years on EPA record - Ralston Valley Water Supply District, 1,610 residents served.
Data: EPA SDWIS
Service Area Map
Coverage area for Ralston Valley Water Supply District Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Ralston Valley Water Supply District serves a community with a median household income of $140,838 and an estimated 103,524 residents across its service area.
🌊 Where Does Your Water Come From?
Ralston Valley Water Supply District'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.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
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
Ralston Valley Water Supply District (EPA ID: CO0130667) is a community water system in Colorado that serves approximately 1,610 people from surface water sources.
This system provides water to 4 ZIP codes across 3 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0015 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 Ralston Valley Water Supply District (CO0130667) on EPA.gov.
Frequently Asked Questions
Is Ralston Valley Water Supply District water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Ralston Valley 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 Ralston Valley Water Supply District serve?
Ralston Valley Water Supply District serves approximately 1,610 people across 4 ZIP codes in Colorado.
Where does Ralston Valley Water Supply District get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Ralston Valley Water Supply District Water Report, CO. https://zipcheckup.com/water-system/co0130667/
@misc{zipcheckup-water-system-co0130667,
author = {{ZipCheckup}},
title = {{Ralston Valley Water Supply District Water Report, CO}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/co0130667/}
}