California Governor Jerry Brown on Friday signed a bill guaranteeing equal access to fertility services to lesbian and single women.

The bill, authored by Assemblywoman Nancy Skinner and co-sponsored by Equality California (EQ) and the National Center for Lesbian Rights (NCLR), allows women using known donors to access certain fertility procedures that are less expensive and more effective.

“Women's issues once again are at the forefront of national debate,” said Skinner in a statement. “I am grateful Governor Brown signed legislation that will eliminate barriers LGBT and single women confront when seeking to conceive.”

Clarissa Filgioun, board president of Equality California, said the measure was needed because “same-sex couples have faced many barriers in forming families, including access to fertility healthcare.”

According to NCLR, women seeking to conceive with a known donor who is not an “intimate partner” were being asked to submit to time-consuming and costly testing that decreased the chance of successful conception. Those tests, which included freezing the semen, occurred with each insemination attempt.

“Many intended parents who would not otherwise be able to afford any fertility services will be able to access safe and more effective procedures under this new law,” said Cathy Sakimura, Family Protection Project director at NCLR. We applaud the governor and the legislature for recognizing that same-sex couples, transgender people, and single women should have equal access to fertility services.”

The law goes into effect on January 1.