CenterOak Partners, a Dallas-based private equity firm, completed the investment in HK Solutions Group, a regional provider of infrastructure maintenance services. Financial terms were not disclosed. "We were attracted to the Company after developing an investment thesis around the need to cost effectively repair or replace aging or failing water and wastewater infrastructure. Sustaining this significant core infrastructure is mission critical for our communities and for the environment. HK Solutions has an impressive operating track record in this large, growing, and important sector," Randall Fojtasek, CenterOak CEO and a Managing Partner.