Porta Potties for San Jose Parks and Trailheads: Who Approves and What to Plan

Which parks does this guide cover, and who manages them?

Five areas that host organized events around San Jose: Alum Rock Park, Lake Cunningham, Almaden Quicksilver County Park, Coyote Valley Open Space Preserve and the Los Gatos Creek Trail. They have different managers, so the first call is always to the manager of the specific land, not to the toilet provider.

The table sets out each place, a verified fact about it and the question to put to its manager. It states no fee, because none was found.

Park rules differ, including on how long equipment may stand after an event. The Special Park Use Unit says which rules apply in a San Jose park. For a county park or a preserve, ask the park office or the Open Space Authority.

What should an organizer plan at Alum Rock and the east side?

Alum Rock Park sits in a canyon at the east edge of the city, so ground is uneven, roads are narrow and weekend crowds are large. Place units on the most level, firmest ground the park allows, and ask the park about vehicle access for delivery and servicing before you settle the layout.

The park draws weekend picnickers, hikers and large family gatherings. An organized event there needs the Special Park Use Unit's approval first, and the approval may set the location of any toilets.

Overfelt Gardens, about 33 acres opened in 1966, is in the same part of town and is a gentler, flatter site. Check with the city which rules apply to each.

What is different at Lake Cunningham?

The park covers about 203 acres around a roughly 50-acre lake that is also a flood basin for Thompson Creek. The lake has been closed in the past for poor water quality, and restoration funding has been reported. Confirm what is open before planning, and do not assume the lake is available for any activity.

Because the lake serves flood control, water levels and access can change. A land-side event is simpler to plan than one on the shore.

The park also holds an action sports area. A large event may need toilets across several parts of the park, not only one bank near the parking lot.

What about Almaden Quicksilver and New Almaden?

Almaden Quicksilver County Park covers about 4,150 acres of former mercury mines worked from 1846 to 1976, and New Almaden has been a National Historic Landmark since 1961. Few facilities exist, so group events must bring their own. Narrow roads and heritage rules mean the manager's approval comes first.

The sources differ slightly on the acreage, between 4,152 and 4,163 in some, so this guide uses 'about 4,150'. Heritage events and trail runs bring visitors to a place with few facilities.

Ask the park whether organized events are allowed, where equipment may stand and how a truck would reach it. The answers shape whether cabins, a smaller unit or a handwash station alone is feasible.

What does an event at Coyote Valley need to bring?

Everything. The Coyote Valley Open Space Preserve, run by the Santa Clara Valley Open Space Authority, has a four-mile loop, free parking, no trash cans and no drinking water. A race or ride starting there needs its own toilets, handwashing, waste handling and a plan to take everything out.

That list is short because the preserve is deliberately simple. The managing agency decides whether and where equipment may stand, so ask before you order.

A provider can supply cabins and a handwash station with its own water, but the trash and the supplies are the organizer's job. The supplies page covers what to plan.

How does a Los Gatos Creek Trail event work?

The trail passes through several jurisdictions on its way from Lexington Reservoir through Los Gatos, Vasona Lake County Park and Oak Meadow Park, to Meridian Avenue, so an event may touch more than one manager. Identify the exact access point first, and ask the manager of that point.

Downtown Campbell is about three blocks west of the park corridor in Campbell, and Los Gatos has a Sunday farmers market in its center. Both are service-area towns with their own rules.

Sources differ on the trail's length, between 9.7 and 11.9 miles, so this guide gives none. For a run or ride, the start and finish are where the toilets belong.

How should a race or group hike plan its toilets?

Put the main bank at the start and finish, add smaller groups where spectators gather, and time servicing around the start. Races create a surge in the hour before the gun, then little until the finish. Add an accessible unit on a firm pad and a handwash station with its own water.

A trail race starting near Alum Rock or Almaden Quicksilver draws participants who arrive early, warm up and queue at the same time. A short bank forms a long line. The provider can suggest a count, but it needs the start time, the field size and the number of spectators.

After the finish, demand drops and then rises again as people cool down. The pickup plan should keep the units available until the last finisher has gone and the manager's removal window has not yet passed.

For a group hike or a school day, the same logic applies at a smaller scale. A few cabins at the trailhead, on the hardest ground available, and a station with water usually serve a modest group. Larger groups should ask for a count.

What do dry summers and wetter winters change for park events?

San Jose summers are dry and winters mild and wetter. In the dry months, trailhead lots are hard and dusty and shade is scarce, so queues are uncomfortable. In the wetter months, gravel and turf soften and gates may close, so a truck may not reach the pad. Plan the hard lane first.

No heat or rainfall figures are printed here, because official normals were not available. The practical point is that a spring or autumn event is usually the easier delivery, and a winter event on turf is the harder one.

Creek-side and low-lying sites deserve extra attention. Lake Cunningham's lake is a flood basin for Thompson Creek, and low ground near any creek can be soft. Choose a spot above the wettest ground, and ask the manager about seasonal closures.

What should you have ready before you call the line?

Have the park or trail name, the exact spot, the manager's written approval, the dates and hours, the headcount, the gate and road details and a contact who can meet the truck. With those, a provider can quote the units and flag access problems before the order is final.

Call (888) 351-0294 when you have the list. The call connects you with an independent local provider, who confirms units in writing when they are free.

• The park, preserve or trail access point, and the spot for the units
• The manager's approval or the reference for it
• Event dates, start and end times, and the removal deadline
• Expected attendance, including spectators and staff
• Gate hours, vehicle limits and the road in
• A phone number that will be answered on the day

How do trucks, gates and ground conditions affect delivery?

Parks have gates, weight limits and soft ground. Ask the manager for hours, the maximum vehicle length and any seasonal closure, then tell the provider. In dry summers the ground is hard and dusty; in wetter months turf and gravel can soften and stop a truck, so ask about boards.

A truck that arrives at a locked gate cannot deliver, and a provider cannot promise a time on the call. Give the provider the gate arrangements and a contact who can open it.

For Mount Hamilton and the far east hills, the approach road is long and winding, which is a reminder that distance and road shape decide what trucks can do.