The Sierra Vista Environmental Operations Park (EOP), also known as the Sierra Vista Wastewater Wetlands, has been opened to public tours on Sunday mornings, all year round.

Group size is limited to 15 people on a first come-first served basis. Arrive before the starting hour, and sign the waiver right away to secure a place. Walk is behind locked gates for 2-2.5 hours, and you must stay with the group the entire walk. Bring water, hat, and binoculars. A spotting scope is optional. A checklist will be provided. There is no charge for the walks.