First, confirm with a certified plumber or your local water authority. Many municipalities offer free testing or even help with replacement costs. Some cities, like Chicago and Boston, have programs to replace lead service lines at no cost to homeowners.
Second, invest in a lead-certified water filter for your kitchen tap. Look for ones that meet NSF/ANSI Standard 53. You can also use a simple pitcher filter, but make sure it’s specifically rated for lead removal. Not all filters are created equal—some just make your water taste better, not safer.
Third, know your water’s pH. Lead leaches more easily in acidic water. A simple pH test strip can tell you if your water is on the aggressive side. If it is, a neutralizer filter might be a good addition. Your water company should also provide an annual water quality report—read it like you would a menu at your favorite diner.