Tapcensus

Pentachlorophenol violations in Arizona

14 active public water systems in Arizona had a Pentachlorophenol violation in the past three years, 2 of them in the latest quarter of EPA's data. What Pentachlorophenol is and why it matters.

Health effects: Chronic exposure to pentachlorophenol is associated with liver and kidney damage and immune system effects. EPA classifies it as a probable human carcinogen (Group B2). Acute high-level exposure can cause fever, profuse sweating, and cardiovascular collapse. Workers and communities near wood treatment facilities face the greatest exposure risk.

Systems with a Pentachlorophenol violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Scua Bylas
Bylas · County 		3,160 12 3
Gilbert, Town of
Gilbert · Maricopa County 		247,600 9 1
Epcor Agua Fria
Surprise · Maricopa County 		128,040 5 0
GW Santa Cruz Water CO
Maricopa · Pinal County 		84,000 7 0
Flagstaff City of
Flagstaff · Coconino County 		79,796 5 0
Goodyear Water Department
Goodyear · Maricopa County 		50,001 4 0
Bullhead City Mohave
Bullhead City · Mohave County 		36,330 13 1
City of Show Low
Show Low · Navajo County 		17,139 2 0
Apache Junction Water District
Apache Junction · Pinal County 		15,610 6 0
Pueblo del Sol Water Company
Sierra Vista · Cochise County 		12,804 4 0
Scua Upper Seven Mile
County 		8,478 12 3
Aspc Lewis Complex Water System
Buckeye · Maricopa County 		4,300 6 1
Arizona Village
County 		3,211 10 2
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 Pentachlorophenol, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Pentachlorophenol 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.