San Simon Dwid
EPA ID: AZ0402027 · 312 people served · 1 ZIP code
In the most recent EPA reporting cycle, San Simon Dwid carried 28 violations still marked as unresolved — each remains active in the federal enforcement ledger while the utility continues operations for its service population of approximately 312 people across the area it supplies.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 2 (2022) to 4 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for San Simon Dwid Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The San Simon Dwid serves a community with a median household income of $54,167 and an estimated 873 residents across its service area. Approximately 51% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
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?
San Simon Dwid'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.
About 1% of homes in Cochise County, Arizona rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How San Simon Dwid compares to EPA limits
What This Means For You
Revised Total Coliform Rule at 7 presence exceeds the EPA maximum of presence.
Nickel at 19 mg/L (secondary standard: 2.0 mg/L) exceeds the EPA maximum of 4 mg/L (secondary standard: 2.0 mg/L). Tooth & bone damage at high levels. Consider reverse osmosis filtration.
Lead and Copper Rule at 4 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 4 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Nickel was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
San Simon Dwid (EPA ID: AZ0402027) is a community water system in Arizona that serves approximately 312 people from groundwater sources.
This system serves ZIP code 85632 in San Simon.
Average Home Safety Score: C (58/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| September 1, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| July 24, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| July 1, 2025 | Nickel | Health-based | Unresolved |
| July 1, 2025 | Revised Total Coliform Rule | Monitoring | Unresolved |
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Unresolved |
| June 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| May 1, 2025 | Revised Total Coliform Rule | Monitoring | Unresolved |
| April 1, 2025 | Nickel | Health-based | Unresolved |
| March 1, 2025 | Revised Total Coliform Rule | Monitoring | Unresolved |
| January 1, 2025 | Nickel | Health-based | Unresolved |
| December 1, 2024 | Revised Total Coliform Rule | Monitoring | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unresolved |
| October 1, 2024 | Nickel | Health-based | Unresolved |
| September 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| July 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
| July 1, 2024 | Nickel | Health-based | Unresolved |
| June 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
| April 1, 2024 | Nickel | Health-based | Unresolved |
| February 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Nickel | Inorganic | 19 | Yes |
| Revised Total Coliform Rule | Microbiological | 7 | No |
| Lead and Copper Rule | Treatment Failure | 4 | No |
| Consumer Confidence Report Rule | Reporting Failure | 4 | No |
| Surface Water Treatment Rule | Treatment Failure | 3 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
Health Risk Details
Fluoride (EPA limit: 4 mg/L (secondary standard: 2.0 mg/L))
Tooth & bone damage at high levels At-risk groups: children under 8 during tooth development, elderly with compromised bone density, people with kidney disease.
Removal methods: reverse osmosis, activated alumina, distillation. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 85632 | 0.001 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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
- 85632 — San Simon
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for San Simon Dwid (AZ0402027) on EPA.gov.
Frequently Asked Questions
Is San Simon Dwid water safe to drink?
San Simon Dwid has recorded 20 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does San Simon Dwid serve?
San Simon Dwid serves approximately 312 people across 1 ZIP code in Arizona.
Where does San Simon Dwid get its water?
The primary water source is groundwater.
Frequently Asked Questions
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
San Simon Dwid (EPA ID: AZ0402027) — request the latest Consumer Confidence Report or ask about specific contaminants.