Agents also arrested three other people who were sub-dealers or otherwise involved in the area's heroin trade.
All six suspects are Mexican nationals and have been placed on immigration hold.
"This is the largest heroin seizure ever made in this community," Attorney General Jerry Brown said.
He said the arrests “will significantly impact the availability of hard drugs in the Yuba-Sutter area."
Bureau of Narcotic Enforcement Task Force agents began the investigation in January and served three separate search warrants in Yuba City over a three-month period.
The investigation revealed that Juan Carlos Lopez, Joseph Valdez and Hugo Roberto Rios Martinez were "full time" heroin dealers.
Seven days a week from morning to night, the three traffickers sold the heroin, which was produced in either Mexico or South America and delivered to the area through Stockton.
From Lopez's residence, agents seized 6.64 grams of heroin, 1.5 grams of cocaine, adulterant, packaging material, scales, a .38-caliber handgun, a 12-gauge shotgun, a rifle, and $6,199.00 in drug proceeds.
From the Valdez residence, agents seized 34.27 grams of heroin, packaging material, 35 Hydrocodone pills, and $1,311.00 in drug proceeds.
From the Martinez residence, agents seized 1,554.55 grams of heroin, adulterant, packaging material, scales, 2 handguns, a rifle, and $24,377 in drug proceeds.
Valdez's 16-year-old daughter, who was at school during the service of the search warrant, was taken into protective custody by Sutter County Child Protective Services. A 10-year-old child was removed from the Martinez home and taken into protective custody.
The Bureau of Narcotic Enforcement Task Force determined the street value of the heroin to be $250,000.
All individuals were booked into the Sutter County Jail for possession for sale of heroin. Martinez and Valdez also were charged with child endangerment.
None of the six suspects have any known prior criminal record in California.
Located in the Attorney General's office, the Bureau of Narcotic Enforcement is the oldest narcotic enforcement bureau in the United States.
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