City of Yuma
EPA ID: AZ0414024 · 103,264 people served · 6 ZIP codes
Looking at the EPA enforcement file for City of Yuma, 5 violations are listed as unresolved — those findings cover the utility's service area of approximately 103,264 people and remain open in the federal compliance system, awaiting formal corrective action documentation.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Stable · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 51 (2021) to 9 (2025). Violation counts have remained relatively steady.
Service Area Map
Coverage area for City of Yuma Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The City of Yuma serves a community with a median household income of $62,928 and an estimated 165,903 residents across its service area.
Environmental Justice Note: 68% 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?
City of Yuma'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 1% of homes in Yuma County, Arizona rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How City of Yuma compares to EPA limits
What This Means For You
Contaminant 1009 at 11 mg/L exceeds the EPA maximum of 0.004 mg/L. Intestinal damage, bone damage. Consider reverse osmosis filtration.
Atrazine at 2 mg/L exceeds the EPA maximum of 0.003 mg/L. Endocrine disruption, cardiovascular & reproductive effects. Consider granular activated carbon (GAC) filtration.
Lead at 1 mg/L (action level) exceeds the EPA maximum of 0.015 mg/L (action level). Brain damage in children, kidney & blood pressure in adults. Consider reverse osmosis filtration.
Total Trihalomethanes (TTHM) at 4 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Haloacetic Acids (HAA5) at 2 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 1 detection recorded.
Contaminant 1009 was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →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
City of Yuma (EPA ID: AZ0414024) is a community water system in Arizona that serves approximately 103,264 people from surface water sources.
This system provides water to 6 ZIP codes across 2 communities.
Average Home Safety Score: C (59/100)
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 |
|---|---|---|---|
| July 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| June 1, 2025 | Contaminant 1008 | Monitoring | Unresolved |
| April 1, 2025 | Haloacetic Acids (HAA5) | Monitoring | Unresolved |
| March 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| February 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| January 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| January 1, 2025 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| January 1, 2025 | Stage 1 DBP Rule | Monitoring | Resolved |
| December 30, 2024 | Haloacetic Acids (HAA5) | Monitoring | Resolved |
| December 1, 2024 | Contaminant 1009 | Monitoring | Resolved |
| December 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| December 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| October 2, 2024 | Surface Water Treatment Rule | Monitoring | Resolved |
| October 1, 2024 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| June 1, 2024 | Fecal Coliform | Monitoring | Resolved |
| May 12, 2024 | Contaminant 0700 | Health-based | Resolved |
| January 1, 2024 | Atrazine | Monitoring | Resolved |
| October 2, 2023 | Surface Water Treatment Rule | Monitoring | Resolved |
| August 1, 2023 | Consumer Confidence Report Rule | Health-based | Resolved |
| April 1, 2023 | Revised Total Coliform Rule | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Contaminant 1008 | Other Violation | 17 | Yes |
| Lead and Copper Rule | Treatment Failure | 15 | No |
| Contaminant 1009 | Other Violation | 11 | No |
| Consumer Confidence Report Rule | Reporting Failure | 10 | Yes |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 4 | No |
| Atrazine | Organic | 2 | No |
| Chlorite | Disinfection Byproducts | 2 | Yes |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | No |
| Stage 1 DBP Rule | Treatment Failure | 2 | No |
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Revised Total Coliform Rule | Microbiological | 2 | No |
| Lead | Inorganic | 1 | No |
| Fecal Coliform | Microbiological | 1 | No |
| Contaminant 0700 | Other Violation | 1 | Yes |
Health Risk Details
Chlorite (EPA limit: 1 mg/L)
Anemia and nervous system effects in infants and children At-risk groups: infants, developing fetuses, people with G6PD deficiency.
Removal methods: ferrous sulfate reduction, activated carbon, 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 |
|---|---|---|---|
| 85364 | 0.0011 mg/L | No | N/A |
| 85365 | 0.0011 mg/L | No | N/A |
| 85366 | 0.0011 mg/L | No | N/A |
| 85369 | 0.0011 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: 3 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 3 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Yuma (AZ0414024) on EPA.gov.
Frequently Asked Questions
Is City of Yuma water safe to drink?
City of Yuma has recorded 19 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 City of Yuma serve?
City of Yuma serves approximately 103,264 people across 6 ZIP codes in Arizona.
Where does City of Yuma get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
- #10 / 100 Highest Exposure Burden (U.S.)
- #9 / 50 Most Disadvantaged Populations Served (Arizona)
- #1 / 50 Highest Exposure Burden (Arizona)
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
City of Yuma (EPA ID: AZ0414024) — request the latest Consumer Confidence Report or ask about specific contaminants.