Pima Utilities
EPA ID: AZ0407120 · 20,000 people served · 86 ZIP codes
Water monitoring history at Pima Utilities shows a clean slate — EPA tracking over the past five years turned up no violations, and 20,000 residents continue to receive fully compliant service.
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 182 (2024) to 2 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Pima Utilities Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Pima Utilities serves a community with a median household income of $72,849 and an estimated 1,752,936 residents across its service area. Approximately 49% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Pima Utilities'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 Maricopa 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
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 116 detections recorded.
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
Pima Utilities (EPA ID: AZ0407120) is a community water system in Arizona that serves approximately 20,000 people from groundwater sources.
This system provides water to 86 ZIP codes across 2 communities.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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: 1 ZIP code confirmed via EPA Community Water System Service Area Boundaries v3 plus 85 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.
This system serves 86 ZIP codes:
85001 · 85002 · 85003 · 85004 · 85005 85006 · 85007 · 85008 · 85009 · 85010 85011 · 85012 · 85013 · 85014 · 85015 85016 · 85017 · 85018 · 85019 · 85020 85021 · 85022 · 85023 · 85024 · 85025 85026 · 85027 · 85028 · 85029 · 85030 85031 · 85032 · 85033 · 85034 · 85035 85036 · 85037 · 85038 · 85039 · 85040 85041 · 85042 · 85043 · 85044 · 85045 85046 · 85048 · 85050 · 85051 · 85053 85054 · 85055 · 85060 · 85061 · 85062 85063 · 85064 · 85065 · 85066 · 85067 85068 · 85069 · 85070 · 85071 · 85072 85073 · 85074 · 85075 · 85076 · 85078 85079 · 85080 · 85082 · 85083 · 85085 85086 · 85097 · 85098 · 85224 · 85225 85226 · 85244 · 85246 · 85248 · 85249 85286
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Pima Utilities (AZ0407120) on EPA.gov.
Frequently Asked Questions
Is Pima Utilities water safe to drink?
Based on EPA records, Pima Utilities has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Pima Utilities serve?
Pima Utilities serves approximately 20,000 people across 86 ZIP codes in Arizona.
Where does Pima Utilities get its water?
The primary water source is groundwater.
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.
- #19 / 50 Highest Exposure Burden (Arizona)