More than 90% of the lead water lines in Benton Harbor have now been replaced.

The Michigan Department of Health and Human Services announced Tuesday that more than 9 out of 10 of the lines in the city have either been replaced or confirmed to be free of lead.

WSJM reports that crews have excavated 171 service lines in the last 30 days, working at an average of 6 per day. More than 4,000 water service lines have been replaced or given a clean bill of health, leaving just 400 more to go. It’s hoped that the entire water line project will be finished by April, and anyone who still needs to request service should call the city.