The Transportation Security Administration (TSA) is bracing for what could be the agency’s busiest-ever summer travel season. Nationwide, it’s slated to conduct a total of 4% more checkpoint screenings — about 10 million more passengers — than last summer.

In Hawaii, a TSA spokeswoman said a current goal is to get passengers through screening lines within 30 minutes. But that aim could be dashed, especially on high-volume Thursdays, Fridays and Saturdays. The busiest summer daily times are 9 a.m. to 1 p.m., and 7 to 11 p.m. During peak times, travelers are advised to arrive at Hawaii’s airports three hours in advance.

Bacteria like North Shore beaches, too

Surfrider Foundation, the environmental advocacy group, dispatched its trained volunteers to collect water samples at North Shore sites and found some elevated bacteria levels, especially in the standing water at Pupukea Tidepools.

The state Department of Health focuses its frequent testing in urban spots: Waikiki, Ala Moana and Hanauma Bay. Although the volunteers’ North Shore readings aren’t official, it might be prudent for DOH to look farther afield in its own testing. Things may be getting worse.