Gov. Jerry Brown wants to build two 35-mile underground tunnels to keep water coming south through the Sacramento-San Joaquin Bay Delta. The San Diego County Water Authority used to pine for such a plan. But now, emboldened by its drought-proofing projects and wary of shocking ratepayers, the agency is aggressively questioning Brown’s delta tunnels.

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.