Cibola Water Improvement District
EPA ID: AZ0415123 · 197 people served · 2 ZIP codes
Looking at the EPA enforcement file for Cibola Water Improvement District, 32 violations are listed as unresolved — those findings cover the utility's service area of approximately 197 people and remain open in the federal compliance system, awaiting formal corrective action documentation.
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 4 (2021) to 4 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Cibola Water Improvement District Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Cibola Water Improvement District serves a community with a median household income of $53,750 and an estimated 1,159 residents across its service area. Approximately 61% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 88% 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?
Cibola Water Improvement 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.
About 2% of homes in La Paz 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 Cibola Water Improvement District compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 11 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Total Trihalomethanes (TTHM) at 3 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
E. coli at 15 Zero tolerance (any positive sample triggers immediate action) exceeds the EPA maximum of Zero tolerance (any positive sample triggers immediate action). Severe GI illness; potentially fatal kidney failure in children. Consider UV disinfection (99.99%) filtration.
Fecal Coliform at 14 presence exceeds the EPA maximum of presence.
Lead and Copper Rule at 10 mg/L exceeds the EPA maximum of mg/L.
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) 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
Cibola Water Improvement District (EPA ID: AZ0415123) is a community water system in Arizona that serves approximately 197 people from surface water sources.
This system provides water to 2 ZIP codes across 2 communities.
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 | E. coli | Monitoring | Unresolved |
| August 7, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| August 1, 2025 | E. coli | Monitoring | Unresolved |
| August 1, 2025 | Fecal Coliform | Monitoring | Unresolved |
| July 1, 2025 | E. coli | Monitoring | Unresolved |
| July 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| July 1, 2025 | Fecal Coliform | Monitoring | Unresolved |
| June 1, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| June 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| May 2, 2025 | Lead and Copper Rule | Monitoring | Resolved |
| April 2, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| April 1, 2025 | E. coli | Monitoring | Resolved |
| April 1, 2025 | Revised Total Coliform Rule | Monitoring | Unresolved |
| March 1, 2025 | Fecal Coliform | Monitoring | Resolved |
| March 1, 2025 | E. coli | Monitoring | Resolved |
| March 1, 2025 | Revised Total Coliform Rule | Monitoring | Unresolved |
| December 20, 2024 | Lead and Copper 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 | Stage 1 DBP Rule | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| E. coli | Microbiological | 15 | No |
| Fecal Coliform | Microbiological | 14 | Yes |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 11 | Yes |
| Lead and Copper Rule | Treatment Failure | 10 | No |
| Consumer Confidence Report Rule | Reporting Failure | 10 | No |
| Revised Total Coliform Rule | Microbiological | 7 | No |
| Stage 1 DBP Rule | Treatment Failure | 4 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 3 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
Health Risk Details
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. 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 |
|---|---|---|---|
| 85328 | 0.002 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
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Cibola Water Improvement District (AZ0415123) on EPA.gov.
Frequently Asked Questions
Is Cibola Water Improvement District water safe to drink?
Cibola Water Improvement District has recorded 10 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 Cibola Water Improvement District serve?
Cibola Water Improvement District serves approximately 197 people across 2 ZIP codes in Arizona.
Where does Cibola Water Improvement District get its water?
The primary water source is surface water.
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
Cibola Water Improvement District (EPA ID: AZ0415123) — request the latest Consumer Confidence Report or ask about specific contaminants.