Sheriff's deputies inspect a cellblock at the Los Angeles County Men's Central Jail. Michael Garcia was transferred there from juvenile hall after he turned 18 and did not receive special education services for 19 months.

In 2014, more than 11 million people spent time in a local jail in the U.S., most not convicted of any crimes. They awaited hearings, pleas or trials, mostly unable to fork over the bail money needed to get out and go home.

Within the criminal justice system, bail functions as a security deposit. It allows a defendant to leave the confines of a jail with the promise to return or forfeit the money.

Proponents say bail helps protect public safety by keeping criminals behind bars. But two new studies say eliminating the system in some cases could reduce crime and save counties millions of dollars in jail supervision costs.

According to researchers at the Quattrone Center for Fair Administration of Justice, defendants who can’t make bail are more likely to be convicted and less likely to receive favorable plea deals. And those detained before trial committed more crimes after their release than similar defendants who paid bail and left.

Researchers focused the two studies on misdemeanor defendants in Harris County, Texas – the third-largest county in the United States –and on pretrial defendants who received bail hearings in Philadelphia. In Harris County, researchers said about 50 percent of misdemeanor defendants did not make bail. In Philadelphia, that number was around 25 percent.

The researchers found defendants who couldn’t afford bail were more likely to plead guilty and receive sentences more than double the length of those received by defendants who paid bail.

“A lot of people don’t think about or don’t realize some of the collateral consequences of pleading guilty in terms of the effect it has on your criminal record, the ability to find jobs, to get into schools, to get a variety of public benefits,” said head researcher Megan Stevenson in an interview with The Atlantic. “Even with very, very low amounts of bail you’re detaining a lot of people that don’t really need to be detained. These people are poor people, and because they’re detained, they’re more likely to be convicted, they’re more likely to plead guilty.”

The researchers also found the bail system had a negative impact on public safety. Those stuck in jail committed, on average, 22 percent more misdemeanors and 33 percent more felonies than defendants released within 18 months of their bail hearings.

The researchers recommended counties simply release certain defendants on their own, instead of requiring them to pay cash bail for nonviolent, low-level offenses. For example, the authors wrote, if Harris County had ceased using cash bail for defendants whose bonds were set at $500, the county would have reduced incarceration, saved $20 million in jail costs and reduced crime in the county by 1,600 felonies and 2,400 misdemeanors. There would also be less incentive to plead guilty, perhaps leading to fewer wrongful convictions, the authors wrote. Read the two studies here.

Shoshana Walter can be reached at Follow her on Twitter: @shoeshine.

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Shoshana Walter was a senior reporter and producer at Reveal, covering the criminal justice and child welfare systems. She's working on a book for Simon & Schuster about the failures of our country's addiction treatment system. At Reveal, she reported on exploitative drug rehab programs that require participants to work without pay, armed security guards, and sex abuse and trafficking in the marijuana industry. Her reporting has prompted new laws, numerous class-action lawsuits and government investigations. Her stories have been named finalists for the Pulitzer Prize, Selden Ring and National Magazine Awards. She has also been honored with the Livingston Award for National Reporting, the IRE medal, the Edward R. Murrow award, the Knight Award for Public Service, a Loeb Award and Sigma Delta Chi Award for investigative reporting. Her Reveal podcast, "American Rehab," was named one of the best podcasts of the year by The New Yorker and The Atlantic and prompted a congressional investigation.

Walter began her career as a police reporter for The Ledger in Lakeland, Florida, and previously covered violent crime and the politics of policing in Oakland, California, for The Bay Citizen. A graduate of Mount Holyoke College, she has been a Dart Center Ochberg fellow for journalism and trauma at the Columbia University Graduate School of Journalism and a John Jay/Harry Frank Guggenheim fellow in criminal justice journalism. She is a fellow with the Watchdog Writers Group at the University of Missouri School of Journalism and is based in Oakland, California.