The law will prohibit companies that offer internet services from blocking legal content, applications, services or nonharmful devices. It will prohibit them from impairing — or throttling — internet traffic based on the content internet users consume, or the apps, services and devices they use. And it will prohibit them from favoring certain traffic for the company’s own benefit, a practice referred to as paid prioritization.

The new law will also require internet provider companies to disclose certain service information about network management practices, performance and terms to their consumers.

Proponents of the measure say it is a small business issue as well as a consumer rights issue. The bill creates a fair playing field in the industry, allowing new businesses to get off the ground without the potential threat of unfair practices by established companies.

Sarah Bird, CEO of Seattle-based search engine optimization company Moz, hailed the bill’s passage.

“As more of our economic opportunities such as education, health care, banking, job functions, media viewing and relationships thrive online, the more important it is to preserve consumer choice,” Bird said. “Internet service providers cannot be allowed to substitute their money-motivated judgment on how you spend your time online. Our internet economy is the envy of the world; Washington lawmakers are helping make sure that remains true.”

Passing the law was the result of quick action by a bipartisan group of elected officials in Washington, including Inslee, Attorney General Bob Ferguson, Reps. Drew Hansen and Norma Smith, and Sens. Reuven Carlyle and Kevin Ranker.

“Net neutrality is important to everyone — our constituents, small business owners, teachers, entrepreneurs, everyone,” Hansen said. “This is a cause with overwhelming bipartisan support. It’s always nice to see something where Democrats and Republicans can work together to maintain common-sense consumer protections.”

“This is not a partisan issue,” Smith added. “This is about preserving a fair and free internet so all Washingtonians can participate equally in the 21st century economy. Net neutrality is an issue of tremendous importance that will matter today, tomorrow and generations from now.”

The state’s net neutrality law will take effect by June 6.

Watch video from the December press conference on protecting net neutrality in Washington: