06/10/2013 at 10:00 AM EDT
Legal advocate and environmental activist Erin Brockovich-Ellis issued a public apology after her arrest for boating while intoxicated
"At no time was the boat away from the dock and there was no public safety risk," she said in a statement released on Sunday. "That being said, I take drunk driving very seriously, this was clearly a big mistake. I know better and I am very sorry."
Brockovich-Ellis, 52, was approached by a game warden on Lake Mead near Las Vegas. He had observed her having trouble trying to dock her motor boat at the Las Vegas Boat Harbor, and he asked her to take a field sobriety test, which she failed. She was later booked into the Clark County Detention Center and released after posting $1,000 bail.
She added: "After a day in the sun and with nothing to eat it appears that a couple of drinks had a greater impact than I realized."
Brockovich-Ellis rose to fame after her story
of investigating Pacific Gas and Electric company for polluting drinking water in a small California town was made into a 2000 movie, Erin Brockovich
starring Julia Roberts