A longtime Palo Alto civic activist and environmental advocate is set to learn his fate on Jan. 8, 2026, after pleading no contest to felony charges that accuse him of seeking lewd photos from young girls and possessing child sexual abuse material. Robert “Bob” Wenzlau, 67, faces a tentative state-prison term under a plea deal that also requires him to register as a sex offender, although the charges carry a maximum possible sentence of five years. The case stems from an undercover online investigation that followed an out-of-state tip and culminated in his arrest in April 2024.
Plea and sentencing details
According to Palo Alto Online and court filings, Wenzlau pleaded no contest on Aug. 19 and accepted a plea agreement that calls for a tentative 18-month term in state prison and mandates sex-offender registration. The plea paperwork also notes that the counts carry a maximum theoretical sentence of five years. At the Jan. 8 hearing, the judge will decide the final term within those limits.
Undercover investigation and arrest
Palo Alto Police report that the investigation began when authorities in Burke County, Georgia, and the Georgia Bureau of Investigation flagged a user on an anonymous messaging app. Palo Alto detectives then created an undercover account, with an officer posing as a 12-year-old girl. Investigators say Wenzlau sent photos of himself and child sexual abuse material and solicited explicit images. Officers arrested him on April 11, 2024, at his home in the 1400 block of Dana Avenue, served a search warrant and, afterward, prosecutors filed multiple felony counts.
Pretrial conditions and treatment
Court records and media reports state that Wenzlau was released on his own recognizance in June 2024 under conditions that barred contact with minors and allowed only supervised contact with minor family members. His attorney has said he underwent psychiatric and sex-addiction treatment at a facility in Idaho. The case was originally set for sentencing in November 2025 but was continued to Jan. 8 so that both the prosecution and the defense could present additional information to the court, according to filings and prior reporting.
Local ties and reaction
Wenzlau has been a familiar figure in Palo Alto environmental and civic circles. He led the consulting firm Terradex and served as president of the nonprofit Neighbors Abroad, and local coverage has noted that he helped launch Palo Alto’s curbside recycling program in the 1970s. After his arrest, the city removed him from its Stormwater Management Oversight Committee, a step reported by the Palo Alto Daily Post, while the San Francisco Chronicle has detailed his broader civic work.
Legal implications
Because Wenzlau entered a no-contest plea to felony counts involving minors and possession of child sexual abuse material, the plea will be treated like a conviction for sentencing and for collateral consequences, including mandatory sex-offender registration. At the Jan. 8 hearing, the judge is expected to weigh the prosecution’s recommended term, any mitigation offered by the defense, including his reported treatment, and the range of sentencing options under state law. The court’s decision will determine whether Wenzlau serves custody time, receives probation or faces other conditions consistent with the plea agreement.
