You are here:
Lead in Drinking Water: Research Update, Sampling Tools - Lansing, MI
Citation:
Lytle, D., M. Schock, C. Formal, AND K. Cahalan. Lead in Drinking Water: Research Update, Sampling Tools - Lansing, MI. Michigan Department of Health and Human Service, Lansing, MI, November 20, 2019.
Impact/Purpose:
This presentation describes the different water sampling approaches for lead and their application under pilot- or full-scale situations. The data used in the presentation came from past EPA field studies and ORD’s in-house pilot home plumbing simulator. The research presented was obtained under the Safe and Sustainable Water Resources (SSWR) Program’s distribution system corrosion analysis and modeling project (SSWR 6.01C).This presentation is based on in-house research performed under the Safe and Sustainable Water Resources (SSWR) Program’s distribution system corrosion analysis and modeling project (SSWR 6.01C). It describes the different water sampling approaches for lead in drinking water and their application under pilot- or full-scale situations. Nearly all content in this presentation has been presented in previous talks involving the Office of Water, EPA regions, states, consultants and community participants, although the home plumbing system-related slides have been updated to include the most recent data. Drinking water sampling is necessary to ascertain the levels of lead that leach into drinking water from plumbing materials including lead service lines. Several tap water sampling protocols are currently used to measure lead in drinking water for a variety of purposes including assessing lead exposure, determining corrosion control effectiveness, identifying lead sources, and supporting regulatory statutes and compliance assessments. Given in-home variability with the type, number and location of lead sources, water usage patterns, and other factors, different sampling approaches will likely produce largely different results. It is therefore critical to select an approach that answers the question(s) being asked. The audience will be the Michigan Department of Health and Human Service in Lansing, Michigan.
Description:
The research being presented addresses the different sampling approaches and questions (direct LSL, LCR, sequential, etc..). The sequential sampling is a valuable assessment tool that identifies lead sources, compare relative contributions of lead sources, evaluates long-term effectiveness of CC treatment (soluble and particulate) and the benefits of LSL removal. Alternatives for exposure sampling and LSL identification are discussed. Tap Water Sampling Approaches include Regulatory/Compliance/Treatment Sampling, Exposure Assessment Sampling, and Sampling for Lead Sources. No single universally applicable sampling approach for lead in drinking water exists. There are many protocols, but each has a specific use answering one of those many questions. Michigan and Ohio Cases were used in this research.