CARY, North Carolina is a large city with 440,409 residents served by 707 distinct public water systems. Water service covers ZIP codes 27511, 27512, 27518, 27519.
CARY has accumulated a significant number of EPA health-based violations. Reviewing the contaminants involved, requesting your utility's Consumer Confidence Report, and using certified point-of-use filtration is strongly advisable.
EPA reporting identifies Coliform Bacteria, Lead, Radium, Lead, Haloacetic Acids (HAA5), Uranium, Total Trihalomethanes (TTHMs), Arsenic, and Radium among the regulated contaminants associated with CARY's recent health-based violations. Each contaminant has different sources, health implications, and recommended mitigation steps — links to the full EPA reference for each are listed alongside the violation history below.
CARY's 88 violations is above the North Carolina average of 4.8 per city — worth reviewing the contaminant breakdown below.
Last updated: 2026-05-18 · Source: EPA SDWIS
About this data
This overview reflects EPA SDWIS data published as of 2026-05-18. It covers active Community Water Systems (CWS) that exceeded federal Maximum Contaminant Levels during the past five-year EPA reporting window. For up-to-the-minute information, request a current Consumer Confidence Report from your utility, or review the EPA's public dashboard.