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Staff Directory

Prosser Police Department Business Office Hours
8:00 am-5:00 pm Monday through Friday, excluding Holidays
Business Office Phone: 509-786-1500
24 Hour Non-Emergency Dispatch: 509-786-2112 (Option 3)
Fax: 509-786-2292

Office of the Chief of Police

John Markus, Chief of Police
Since the early 18th century modern policing has embraced the principle that "the police are the public and the public are the police; the police being only members of the public who are paid to give full-time attention to duties which are incumbent upon every citizen." I believe this concept is essential to effectively policing our community, with the police and the community in partnership making the City of Prosser a safer place to live and visit. 

Administrative Section

Scott Orate, Sergeant
Eric St. John, Sergeant
The Administration Section is commanded by the Chief of Police whose primary responsibility is to provide general management direction and control for the Administration Section.

Prosser Police Department Records

PO Box 1639, Prosser, WA 99350 (mailing)
Phone: (509) 786-8221 Fax: (509) 786-2292
Christiana Mendoza, Senior Administrative Assistant
Leslie Johnson, Administrative Secretary
The Prosser Police Department Senior Administrative Assistant performs a variety of specialized clerical duties in support of police operations. The Senior Administrative Assistant processes all paperwork generated in the course of investigations to include case reports, citations, and accident reports. The Senior Administrative Assistant receives and processes all requests for information, record checks, VISA letters, Concealed Pistol Licenses, Requests for Ride-Along Applications, and Alarm Registration Applications. The Administrative Secretary assists the Senior Administrative Assistant with day to day activities.

Uniform Patrol Section

Victor Garza, Officer
Junior Sereno, Officer
Jason Johnson, Officer
Jesse Picard, Officer
Jon Cox, Officer
Joshua Nacua, Officer
The Uniform Patrol Section is commanded by the Chief of Police whose primary responsibility is to provide general management direction and control for that Section. The Uniform Patrol Section consists of Uniformed Patrol and Special Operations, which includes, Traffic, Communications Center and Police Aides/Assistants.
To speak with an on-duty Prosser Police Officer dial (509) 786-2112 Option 3 for non-emergency Dispatch (SECOMM).
If you would like to leave a phone message for a Prosser Police Officer dial (509) 786-1500 and then enter their four digit extension at the prompt. 

Community Service Officer

Pablo Olivera, Community Service Officer


The Community Service Officer (CSO) is primarily responsible for animal control and code enforcement within the city limits of Prosser, duties previously held within the Building Department. The CSO is not a certified police officer, and does not have arrest powers but will be able to issue citations for animal control and code enforcement violations under the Prosser Municipal Code. The CSO assists officers in other areas such as parking enforcement and traffic control. The CSO is available Monday through Friday, 9:00am to 5:00pm, and can be reached at 509-786-1500 ext. 8211. If you have any questions concerning animal control or possible code violations, please contact our Community Service Officer and they will be happy to assist you.

Reserve Unit

Brianne Colvig, Reserve Officer
The Prosser Police Department Reserve Unit was established to supplement and assist regular sworn police officers in their duties. This unit provides professional, sworn volunteer reserve officers who can augment regular staffing levels.
For information on the Prosser Police Department Reserve Unit Program, please contact the Police Department.

DOC Prosser Outstation

Ross Esparza, Community Corrections Officer III

Hiran Cantu, Community Corrections Officer III

Department of Corrections, Prosser Outstation
Community Corrections Division
205 A Hagerty Lane 
Prosser, WA 99350
Phone: (509) 786-1500  x3114
Esparza Cell: (509) 727-0138
Cantu Cell: (509) 515-5157
Fax: (509-786-2292