Mouzon v. Alameda County
- Donna Ryu
- 4:24-cv-01907
- U.S. District Court · Northern District of California
- 8
In Alfonso Mouzon v. Alameda County, Judge Ryu found cognizable due-process and municipal-liability claims and ordered service.
Alfonso Mouzon’s claims against Alameda County may proceed past preliminary screening. Alameda County must receive the lawsuit, respond to the amended complaint, and follow the order’s service, briefing, and discovery procedures.
What happened
In Alfonso Mouzon v. Alameda County, Alfonso Mouzon, a civil detainee, sued Alameda County under a federal civil-rights law. He alleges that county jail officials violated his constitutional rights while he was held at the Alameda County Jail from July through September 2021 during civil-commitment proceedings.
Mouzon claims the County had a policy of treating people detained under California’s Sexually Violent Predators Act like the general prison population. He says those conditions violated his Fourteenth Amendment due-process rights and that the County’s policy and practices caused the violation. He seeks money damages and an order requiring changes.
Judge Donna M. Ryu ruled that Mouzon stated a due-process claim and a municipal-liability claim against Alameda County. The court ordered the Clerk to send the County the lawsuit and service-waiver materials, and set deadlines for the County’s answer and later motions. The order screened the complaint and allowed these claims to proceed; it did not decide whether Mouzon will ultimately win.
The detailed version
- Mouzon v. Alameda County · No. 4:24-cv-01907
- Donna Ryu
- Oct. 15, 2025
Background
Alfonso Mouzon, who the opinion describes as a civil detainee currently held at Coalinga State Hospital, filed a lawsuit without a lawyer under 42 U.S.C. § 1983. He alleges that Alameda County jail officials violated his constitutional rights when he was temporarily housed at the Alameda County Jail from July through September 2021 while civil-commitment proceedings under California’s Sexually Violent Predators Act were pending.
The amended complaint names Alameda County, rather than individual defendants. Mouzon describes the County as responsible for the policies, customs, and practices governing conditions for people detained under that Act in the county jail. He seeks injunctive relief and monetary damages.
Screening standard
Because the lawsuit seeks relief from a governmental entity, the court was required to screen the amended complaint under 28 U.S.C. § 1915A. At this stage, the court must identify claims that can proceed and dismiss claims that are frivolous, malicious, inadequately pleaded, or seek money from an immune defendant. The court also stated that pleadings filed without a lawyer must be read liberally, but must still contain enough factual allegations to make the claimed right to relief plausible.
Claims
Mouzon’s first claim is that Alameda County had a policy of failing to treat people detained under the Sexually Violent Predators Act differently from the general prison population. The opinion explains that a civil detainee awaiting adjudication is entitled to conditions that are not punitive. Conditions identical or similar to those imposed on pretrial criminal detainees, or more restrictive than conditions the person would face after civil commitment, can create a presumption that the conditions are punitive. The government may rebut that presumption by showing legitimate, nonpunitive interests and that the restrictions were not excessive in relation to those interests.
The court held that, read liberally, Mouzon’s allegations were sufficient to state a cognizable claim under the Fourteenth Amendment’s Due Process Clause.
Mouzon’s second claim is based on municipal liability under § 1983. The court explained that a local government is not automatically liable merely because it employs someone who violated a plaintiff’s rights. Instead, a plaintiff must allege a constitutional violation, a municipal policy, deliberate indifference to the constitutional right, and that the policy was the moving force behind the violation. The plaintiff must also provide enough facts about the policy, custom, or practice to allow the municipality to defend itself and to plausibly support relief.
The court found that Mouzon had alleged unconstitutional conditions at the Alameda County Jail and a policy that he claimed was the moving force behind the constitutional violation. It therefore held that he stated a cognizable policy-based claim against Alameda County under Monell v. Department of Social Services.
Ruling and next steps
Judge Donna M. Ryu ordered that Mouzon’s due-process and Monell claims against Alameda County proceed. The Clerk was directed to send the County notice of the lawsuit, requests to waive service, the amended complaint and attachments, and related court materials. The County was ordered to answer the amended complaint.
The order also set a schedule for dispositive motions, including summary judgment or other motions that could resolve the case. It authorized discovery under the Federal Rules of Civil Procedure and permitted the County to take depositions of Mouzon and other necessary witnesses confined in prison. The opinion does not decide the ultimate merits of Mouzon’s claims.
Read the full 8-page opinion on CourtListener, the free public archive maintained by the Free Law Project.