Whetstone Ranch Water System
EPA ID: AZ0402125 · 183 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Whetstone Ranch Water System (AZ0402125): 1 past health-based violation, since resolved. Over the tracked period, Whetstone Ranch Water System logged 6 EPA violations - each has been remedied, and the system now supplies 183 people in good standing.
Data: EPA SDWIS
Service Area Map
Coverage area for Whetstone Ranch Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Whetstone Ranch Water System serves a community with a median household income of $49,306 and an estimated 1,942 residents across its service area.
Environmental Justice Note: 69% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Whetstone Ranch Water System'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 Whetstone Ranch Water System compares to EPA limits
What This Means For You
Stage 2 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Lead and Copper Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Comparable Water Systems
Similar-sized systems in Arizona
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
Whetstone Ranch Water System (EPA ID: AZ0402125) is a community water system in Arizona that serves approximately 183 people from groundwater sources.
This system serves ZIP code 85630 in Saint David.
Violation History
Status breakdown for accepted records with record years 2021-2026: 5 resolved, 1 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 |
|---|---|---|---|
| February 1, 2026 | Consumer Confidence Report Rule | Non-health-based | Archived |
| December 20, 2024 | Lead and Copper Rule | Non-health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Non-health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| January 1, 2024 | Stage 1 DBP Rule | Non-health-based | Resolved |
| October 2, 2022 | 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 |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
| Lead and Copper Rule | Treatment Failure | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.003 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 AZ or modeled from parcel and building-footprint data.
- 85630 - Saint David
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Whetstone Ranch Water System (AZ0402125) on EPA.gov.
Frequently Asked Questions
Is Whetstone Ranch Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Whetstone Ranch Water System; its 6 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Whetstone Ranch Water System serve?
Whetstone Ranch Water System serves approximately 183 people across 1 ZIP code in Arizona.
Where does Whetstone Ranch Water System get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Whetstone Ranch Water System (AZ): 1 Health Violation. https://zipcheckup.com/water-system/az0402125/
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title = {{Whetstone Ranch Water System (AZ): 1 Health Violation}},
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url = {https://zipcheckup.com/water-system/az0402125/}
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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
Whetstone Ranch Water System (EPA ID: AZ0402125) - request the latest Consumer Confidence Report or ask about specific contaminants.