Tapcensus

Beryllium violations in Arizona

5 active public water systems in Arizona had a Beryllium violation in the past three years, 1 of them in the latest quarter of EPA's data. What Beryllium is and why it matters.

Health effects: Chronic oral exposure to beryllium is associated with intestinal lesions and bone damage. EPA classifies beryllium as a probable human carcinogen (Group B2) based on animal evidence and limited human data. Occupational inhalation exposure causes a distinct lung disease (berylliosis), but the oral route primarily targets the GI tract and bone.

Systems with a Beryllium violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Scua Bylas
Bylas · County 		3,160 12 3
GW Santa Cruz Water CO
Maricopa · Pinal County 		84,000 7 0
Bullhead City Mohave
Bullhead City · Mohave County 		36,330 13 1
Hopi High School Bia
Hopi High School · County 		1,005 11 4
Lower Moencopi Spring Source
Lower Moencopi · County 		465 12 3
About this data

A system is counted once if any of its violations in the past three years involved Beryllium, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Beryllium alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Arizona records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.