Key Takeaways To study the effects of lead service line replacement (LSLR) and flushing, at‐the‐tap water test kits were provided to 565 homeowners who took part in the New York City Department of Environmental Protection's pilot LSLR program. LSLR effectively lowered lead levels regardless of whether flushing was continued, even 30 days afterward. Although high‐velocity flushing or whole‐house (WH) flushing is recommended after an LSLR, only 61% of survey respondents performed WH flushing for 30 minutes. When a high‐velocity flush is not performed, a low‐velocity flush can still lower lead levels.
Ching et al. (Wed,) studied this question.