Why representative samples matter
Communities sometimes balk when asked to inspect service lines in order to gather a “representative sample” of their water system for predictive modeling of their service line materials. After all, they already have a recent sample or survey of some portion of their water system. They may have been reassured by some experts that as […]
Free LCRR data validation tool launch
Ready to check if your inventory data matches the EPA template? We have launched an online data validation tool that allows you to upload your data, map fields and values, and see potential errors and warnings. This tool is free of charge. Use it to ensure your data is LCRR compliant via a few simple […]
What zero-lead samples really mean
It’s easy to find evidence for a risk of lead exposure from water service lines: once you find a lead service line, you know there is some risk. But how do we show that there isn’t a meaningful risk of lead in our water system? In some communities, water utility personnel with decades of experience […]
How to Identify and Address Bias in your LSL Inventories
Every community wants to find and remove every lead water service line in their water system. The necessary first step is creating an accurate lead service line inventory (LSLI), so that you know where to dig, and can properly prioritize where to start. But creating that inventory is extremely tricky. Most utilities and municipalities have […]
