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WATER and WASTEWATER COMMISSION Lead Strategies Update Matt Cullen, P.E. | Gary Chauvin May 5, 2021 Water and Wastewater Commission Meeting May 5, 2021  EPA’s Lead and Copper Rule Revisions  AW Compliance - Sampling Results for Lead  Lead Service Line Inventory  School and Childcare Facility Sampling  Lead Webpage and Customer Requested Lead Sampling EPA’s Lead and Copper Rule Revisions  Goal: Further reduce exposure to lead in drinking water  Final rule issued by EPA on January 15, 2021  Current compliance date for water systems: January 16, 2024  EPA announced that final rule is under review & will seek more public input • Compliance deadline may be delayed to September 16, 2024 EPA’s Lead and Copper Rule Revisions (continued)  Several major changes from previous rule: • Lead Service Line Inventory • Lead Service Line Replacement Plan (as applicable) • Lead monitoring at schools and childcare facilities • New lead “Trigger Level” of 10 parts per billion (ppb) • Lead “Action Level” of 15 ppb is unchanged • Possible changes to sample locations for compliance monitoring • New mandatory language on lead for Annual Water Quality Report Lead Compliance Sampling Results Regulatory Action Level Trigger Level Lead Service Line Inventory Lead pipe  Identify water service line materials • Includes public & private service line  Categorize service line material • Lead • Galvanized Requiring Replacement • Non-lead • Lead Status Unknown  Complete by January 16, 2024 & submit to TCEQ  AW Goal: All service lines in “non-lead” category • LSL Replacement Plan required as applicable Lead Service Line Inventory(continued) Public Side Materials 1,325 1,250  Austin's code allowed lead services on the public 38,425 side until 1954, on the private side until 1967  After reviewing all tap cards prior to 1956 Not Lead Unknown Galvanized • Not lead – 30,000 • Unknown – 10,000 • Galvanized – 1,000  9,675 Unknown/Galvanized field inspected so far; 1 lead found sampling • No lead detected in pre or post replacement Private Side Materials 550 1,325 9,125 Not Lead Unknown Galvanized Lead Service Line Inventory(continued)  Area in red is approximate area developed as of 1960  Red area contains approximately 60,000 meters • 40,000 already investigated  Approximately 190,000 meters outside red area School & Child Care Facility Sampling  Applies to all elementary schools & licensed childcare facilities built before 2014  One 5-year round of sampling conducted • 20% of schools/facilities per year • 5 taps per school, 2 taps per childcare facility • Upon request thereafter  Secondary schools sampled upon request  AW provides sampling instructions, bottles, & lab analysis • School/facility staff can collect samples  EPA’s 3Ts for Reducing Lead in Drinking Water Toolkit Lead Webpage and Customer Requested Lead Sampling  AW Lead info page at: www.austintexas.gov/lead  Requested for 21 residences over the last year • Two samples at each address  20 residences had non-detect results, 1 residence had a detect • Detect was 1.9 ppb in first sample, non-detect in second sample • Cause of detection is internal plumbing Questions?