A large class or major environmental risks are subject to severe moral
hazard problems. The purpose of this paper is to study the potential
conflicts between cost minimization and safety care. The intuition is
that regulatory efforts or sheer competition inducing a greater focus
on cost minimization may tilt the agents' trade-off towards taking too
much risk. Here we study the problem in the context of regulation of
a natural monopoly and see how high powered incentives may conflict wi
th safety care. We address the issue of moral hazard in environmental
risk with adverse selection, limited liability, risk aversion and mult
iprincipals.