The San Diego Regional Water Quality Control Board focuses on sites where it can make the greatest difference and protect the largest groups of people. In recent years, the board has prioritized large sources of pollution, such as the San Diego Bay shipyards, sewer overflows, the Tijuana River and watershed-wide stormwater runoff rather than small sites that present less risk.

It’s still too soon to know if the drought is truly over. We can’t predict the future, for one thing. Nor can we agree on what is meant by “drought.” President-elect Donald Trump, the California Department of Water Resources, the U.S. Drought Monitor and some top climate scientists all have different definitions.

For years, the San Diego Regional Water Quality Control Board has tried to make cities clean up Chollas Creek. Now, thanks to a regulatory change, the board will wipe away the problem in part by redefining pollution instead of reducing it.