Along with calls for better disaster mitigation programs, the mayors announced a new federal data tool that will compile information on drought, flooding and river levels.

Quick-growing blooms of bacteria and algae have long been a hazard in lakes and rivers, because of the toxins they produce. Fueled in part by agricultural runoff, these blooms are also threatening public water systems, making water temporarily unusable, and forcing some cities and towns to take costly preventive measures.

A plan to disperse Washington-based USDA jobs to five hubs, including Kansas City and Indianapolis, is making waves across agriculture. Critics say the shakeup could hobble the agency, while proponents say it will move staff closer to farmers and save money.

Settlement payments from chemical companies are helping cities pay for expensive PFAS removal technology. But local leaders say the dollars often fall short of covering the full costs to clean up drinking water.