Flowing Wells Irrigation District
EPA ID: AZ0410051 · 16,000 people served · 54 ZIP codes
EPA monitoring data for Flowing Wells Irrigation District shows an unblemished five-year compliance history — no violations of any kind have been recorded for this utility, which supplies water to approximately 16,000 people, covering every reporting cycle without a single MCL exceedance or monitoring lapse.
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 54 (2024). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Flowing Wells Irrigation District Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Flowing Wells Irrigation District serves a community with a median household income of $68,608 and an estimated 916,333 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.
Environmental Justice Note: 39% 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?
Flowing Wells Irrigation District'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 Pima 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. 54 detections recorded. 8 exceed federal EPA limits (4 ppt for PFOA/PFOS). 3 exceed state limits.
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
Flowing Wells Irrigation District (EPA ID: AZ0410051) is a community water system in Arizona that serves approximately 16,000 people from groundwater sources.
This system provides water to 54 ZIP codes across 1 community.
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: 2 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 52 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 54 ZIP codes:
85701 · 85702 · 85703 · 85704 · 85705 85706 · 85707 · 85708 · 85709 · 85710 85711 · 85712 · 85713 · 85714 · 85715 85716 · 85717 · 85718 · 85719 · 85720 85721 · 85722 · 85723 · 85724 · 85725 85726 · 85728 · 85730 · 85731 · 85732 85733 · 85734 · 85735 · 85736 · 85737 85739 · 85740 · 85741 · 85742 · 85743 85744 · 85745 · 85746 · 85747 · 85748 85749 · 85750 · 85751 · 85752 · 85754 85755 · 85756 · 85757 · 85775
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Flowing Wells Irrigation District (AZ0410051) on EPA.gov.
Frequently Asked Questions
Is Flowing Wells Irrigation District water safe to drink?
Based on EPA records, Flowing Wells Irrigation District has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Flowing Wells Irrigation District serve?
Flowing Wells Irrigation District serves approximately 16,000 people across 54 ZIP codes in Arizona.
Where does Flowing Wells Irrigation District get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
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 →
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.