Public Water System

GW SAGUARO DIST WATER CO - RINCON

PWSID AZ0410144 · Arizona · 232 people served

Failing

GW SAGUARO DIST WATER CO - RINCON is an EPA-regulated public water system in Arizona (PWSID AZ0410144). It serves an estimated 232 residents — a rural community of customers — across 1 community across 1 ZIP code.

Over the past five years, GW SAGUARO DIST WATER CO - RINCON has recorded 58 EPA health-based violations. The grade of F summarizes this compliance pattern. Specific contaminants, dates, and rule citations are listed in the violation history below.

Service Area

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Centered on the averaged ZIP-code centroid of 1 ZIP served.

Population

232

Cities

ZIPs

Violations

EPA Health-Based Violations

Health-based Maximum Contaminant Level (MCL) violations on file for GW SAGUARO DIST WATER CO - RINCON over the past five years of EPA SDWIS reporting.

Fluoridechemical

EPA Code 1025 · Maximum Contaminant Level Exceedance

violations

EPA Limit

4.0 mg/L

Last Reading

4.2 MG/L

First Reported

Apr 2021

Most Recent

Jan 2025

What this violation means

Fluoride at the optimal level (~0.7 mg/L) reduces tooth decay, which is why most US utilities add it. The MCL of 4.0 mg/L exists to protect against skeletal fluorosis from naturally high-fluoride groundwater, while the EPA's secondary standard of 2.0 mg/L addresses dental fluorosis in children.

Recommended precautions

→Reverse osmosis removes fluoride; standard carbon filters do NOT.
→If your child uses fluoride toothpaste and drinks fluoridated water, supervise brushing to limit ingestion.
→Bone meal supplements often contain fluoride and should be used cautiously.

Read the complete guide to Fluoride

Source: EPA Safe Drinking Water Information System (SDWIS). Health-based violations only. Older violations may have been resolved; check your utility's most recent Consumer Confidence Report for current status.

Cities Served by GW SAGUARO DIST WATER CO - RINCON

PHOENIX

ZIP Codes Served

85027

About this system

EPA records this system as PWSID AZ0410144. Data reflects the most recent EPA SDWIS publication as of 2026-05-18. Public Water System Identifiers (PWSIDs) are assigned by the EPA's Safe Drinking Water Act program to track every regulated water utility in the United States. The first two letters typically indicate the state primacy agency. For real-time water quality information, contact GW SAGUARO DIST WATER CO - RINCON directly or review their annual Consumer Confidence Report (CCR).