A Long Island couple who authorities said sold heroin out of a house they shared with 10 kids were arraigned Wednesday on drug-related charges -- and each ordered held on $1 million cash bail.

Kelly Mullen, 29, and her husband, Aaron Smith, 57, each entered not guilty pleas in Suffolk County Court in Riverhead.

The husband and wife, who live on Cherry Avenue, were among 14 defendants indicted last week after the bust of two separate Suffolk County drug rings, District Attorney Thomas Spota said.

The prosecutor said Miguel Vicente, of Williamsburg, Brooklyn, supplied both rings, which flooded Suffolk County with about 40,000 bags of heroin during one 38-day period between February and March.

"They participated, they encouraged and they sold to addicts whose lives are being destroyed because of these habits," Spota said Wednesday.

Mullen and Smith were each charged with operating as a major trafficker, first-degree criminal possession of a controlled substance, third-degree criminal possession of a controlled substance, second-degree conspiracy, and endangering the welfare of a child.

Vicente was charged with operating as a major trafficker, first-degree criminal sale of a controlled substance, first-degree criminal possession of a controlled substance and with second-degree conspiracy.

He was ordered held on $2.5 million cash bail or $7.5 million secured bond. He pleaded not guilty.

Mullen was ordered held on $1 million cash bail, $2 million bond. Smith was held on $1 million cash bail, $3 million bond.

The three are scheduled to appear in court on May 9.

Most of the other lower-level defendants also were arraigned.

Smith's attorney, George Duncan of Central Islip, said his client maintains his innocence.

"We look forward to contesting any evidence they say they have against him," Duncan said.

Mullen's attorney, John Manley of Hauppauge, said she "vehemently denies" the allegations.

"She is a loving mother of four children who would never put them in harm's way," he said in an email.

Vicente's attorney Lance Lazzaro couldn't be immediately reached.

Prosecutors said Mullen picked up the drugs from Vicente in Brooklyn and Smith redistributed the heroin to dealers who would resell it in the county.

Vicente never allegedly sold drugs out of his Brooklyn home, but he used the property to cut and mix the heroin, Spota said.

Vicente also employed addicts as "quality control" to taste and rate the heroin's quality, Spota said.

The arrests were the result of an investigation dating to March 2013, Spota said.

Spota said the defendants, including Mullen and her sister, April Mullen, were arrested March 9 after the investigation, which included wiretaps, undercover sales and surveillance.

Kelly Mullen's four children -- two boys and two girls, ages 2 through 13 -- lived with her and Smith in their house on Cherry Avenue in Holtsville, Spota said.

April Mullen and her six children also lived in that house.

Spota said as many as five dealers a day came to the Holtsville home to pick up heroin.

When Kelly Mullen was arrested at a CVS store in Deer Park, Spota said, authorities found 4,500 bags of heroin and a child in her car.

April Mullen was charged with second-degree conspiracy and third-degree criminal possession of a controlled substance. She pleaded not guilty and was held on $500,000 cash, $1 million bond. Her next court date is May 9.

Jessica Tirino of Hauppauge, who was assigned as April Mullen's attorney, said her client "maintains her innocence and she hopes for a fair investigation by the police and the district attorney's office."

In an earlier release, Spota said the Holtsville home where Smith and the Mullen sisters and their children lived was the "main distribution point" for heroin pickups by drug dealers from Holbrook, Oakdale, Islip, Central Islip, Ronkonkoma, Shirley and Riverhead.

"When we arrived with a search warrant, there were bags of heroin scattered about, including heroin left next to the crib of Mullen and Smith's daughter," Spota said.

With John Valenti