Tier 2 - 2a Level 1 Assessment Tier 2 - 2a Level 1 Assessment https://www.tceq.texas.gov/downloads/drinking-water/notices/microbial/tier-2-2a-l1a.docx/view https://www.tceq.texas.gov/@@site-logo/TCEQ-logo-header.png Tier 2 - 2a Level 1 Assessment Tier 2 - 2a Level 1 Assessment tier-2-2a-l1a.docx — 27.6 KB