How Statistical Methods Help Low Lead (And No Lead) Water Systems

Calling all water systems with no lead / low anticipated lead in their LSLI!

Did you know that the primary value of statistical methods & predictive modeling comes after the initial inventory is created? This is especially true if you believe you have no lead in your system (or have minimal lead) but don’t have records to verify every service line’s material.

Without verifiable records for every service line, you don’t know the true scope of lead in your system. In the upcoming LCRI (Lead and Copper Rule Improvements), unknowns are treated as ‘assumed lead’ for the purposes of replacement rates and other compliance requirements…even if you have no known lead in your system! So if you leave 20% of your service lines as “unknown” material, for example, you’re on the hook for annual verification or replacements as though your system has 20% lead (in addition to other compliance requirements such as tap sampling, customer notifications, etc).