this goes all the way down to owners of dry cleaners, gas stations, car washes, mechanic shops. these little places may not ruin a large area like the bp problem, but over 5-25 years (low average) those places can do tons a damage to water systems that we USE or will have to use.
people are polluting our groundwater systems left and right... they are everywhere yet you won't hear shit about it. hell at least BP ruined unusable (to humans i.e. for drinking, irrigation for crops, etc) water.