Wilmington in July increased its water/sewer rates for its customers in the city and the suburbs. And it’s planning to increase them in 2024. And 2025. And 2026. “Water/sewer rates increased on July 1 by 5.7% for all categories of our customers (city and non-city),” said John Rago, deputy chief of staff for Mayor Mike Purzycki. “The projected increases for …