You knew something like this was only a matter of time. The Post reports that a D.C. man who is the father of developmentally disabled twin boys has filed a class action lawsuit against D.C. WASA.

In court papers, John Parkhurst says his two sons, now 8, were toddlers between 2001 and 2004, the years when elevated lead levels were eventually documented in the city’s drinking water. Parkhurst alleges that the lead left his boys with learning and behavior problems that require therapy and medication that costs between $30,000 and $40,000 a year. The suit seeks damages on the basis of a claim that WASA played down the harm caused by lead in the water.

The class action nature of the suit implies Parkhurst and his law firm expect other plaintiffs to join them.