Toilets on a San Jose Construction Site: What to Plan For

What does California require for toilets on a construction site?

Cal/OSHA Title 8 CCR 1526 calls for one toilet for each 20 employees or fraction of 20. Where a site has fewer than five employees, one single-user toilet suffices. The general contractor or employer confirms what applies. This guide explains the rule, and it does not say that any rental meets it.

The rule is a workplace standard, so it follows the people employed on the site, not the size of the building or the length of the job. A small crew on a long remodel and a large crew on a short demolition each have a number.

This guide cites the agency and the rule but does not copy its text. The employer is responsible for compliance, and the rental provider supplies equipment. If you are unsure how the rule applies to a mixed crew or an unusual site, ask Cal/OSHA or a safety professional.

California is not the only place with a rule like this, and other states and the federal government have their own counts. This page carries no figure from any of them, because a crew in San Jose answers to the California standard. If your site is also covered by another contract requirement, such as a public agency's own specification, ask the contracting party what it asks for on top.

How does the one-per-20 count work?

Divide the number of employees by 20 and round up. Twenty or fewer need one toilet, 21 to 40 need two, 41 to 60 need three, and so on. Fewer than five employees can use a single-user toilet. Recount whenever the crew changes, because a small increase can cross a line.

The table shows the arithmetic. It is a direct reading of the rule's wording, one toilet for each 20 employees or fraction, and not a rule of the provider's.

Most sites find the count rises in steps across a project. A crew of 20 in the framing phase may become 35 at the finishing peak, and the second toilet is needed then, not before.

One practical habit helps: write the count on the site plan next to the unit positions, with the date and the headcount behind it. When the crew changes, the note shows what the count was based on, and the provider has something concrete to adjust against. It also shows an inspector or a client that the question was asked.

Who counts as an employee on a multi-trade site?

The rule counts employees, and a multi-trade site has several employers. The general contractor usually coordinates a shared plan so that every trade has access. Count everyone who works on the site on the busiest shift, and recount when a new subcontractor mobilizes. Do not assume that another trade has arranged units.

On a housing project in Milpitas or an office building in Sunnyvale, the electricians, framers and landscapers may each have separate employers. If each assumes the others brought toilets, the site can end up with none or too few.

Name one party to coordinate sanitation, and give the provider a single contact. That makes changes in headcount easy to pass on.

Where should units go on a San Jose job site?

Place them near the work, on firm level ground, away from heavy equipment paths and material storage, where the servicing truck can reach. On a large site, use several groups rather than one far from the crews. On a hillside lot, choose the spot the truck can reach in every season.

A toilet at the far end of a lot gets used less and complained about more. Walk the site and put units where crews actually are.

Flat former orchard land in Sunnyvale and Milpitas gives trucks easy access. Foothill lots in Evergreen, Almaden Valley and Silver Creek have narrow roads and steep drives, so the unit may stand at the foot of the slope. The delivery and placement page goes through the checks.

How do civil and transit projects change the plan?

Linear and multi-year projects such as BART Silicon Valley Phase II, a six-mile extension with four stations, spread crews along a corridor and change as phases move. They need several unit groups, a servicing route that visits each, and a way to relocate units. Count each work area separately.

A July 2026 report on the BART work said the structural walls were done, a third of the ramp was built and three-quarters of the excavation complete. Each stage puts crews in different places. No opening date is given here, since published sources disagree.

The civil and transit project page covers these arrangements in more detail.

What does a sensible plan look like for three typical San Jose sites?

A residential remodel, an infill housing build and a large campus or civil job each need a different arrangement. The remodel wants one standing unit on a driveway or side yard. The infill build wants a small bank near the work. The large job wants several groups, scheduled servicing and a process for moves.

A remodel in Willow Glen or Rose Garden has a small crew and a narrow lot. One unit on a driveway or in a side yard, serviced weekly on a day written in the quote, is usually the whole plan. The question is whether the truck can reach it and whether a neighbor's drive is blocked.

An infill housing build, with a crew that grows from a handful of workers to dozens, starts with one unit and adds more at the framing peak. The count follows the one-per-20 rule, and the units move as the building takes shape.

A large campus or civil job is a different scale altogether. Several groups, each counted separately, a servicing route that visits them all and a named person who updates the provider when crews arrive. Describe which of the three you resemble when you call, and the provider will know where to begin.

What goes wrong most often on job sites?

Units get boxed in by materials, nobody updates the count when the crew grows, the servicing lane is blocked, and handwashing is forgotten. All four are avoidable. Keep a clear lane, recount at every phase change, mark the unit's position on the site plan and add a station beside it.

The commonest failure is the invisible one. A unit that was easy to reach in week one is behind a stack of lumber in week six. The truck cannot service it, and nobody notices until the crew complains.

The second is the count. A crew that doubled after a new contract started may still have one toilet. Recounting takes five minutes at a Monday meeting.

The third and fourth are access and washing. A gate locked on the servicing day, or a unit with no water for hands, turns a compliant site into a poor one. Put the access arrangements in the quote, and ask for a station.

What do servicing and disposal involve?

The provider pumps the tanks, cleans and restocks on a schedule agreed with you. Frequency is agreed with the provider, because no county figure was found. Waste goes to permitted haulers; the regional wastewater facility accepts domestic waste from portable toilets, not construction or commercial process water.

Septic haulers need valid permits from both Santa Clara County Environmental Health and the City of San Jose, and the county's Solid Waste Program inspects the vehicle, according to the city's septic haulers page. You do not arrange disposal, but you do need to keep the servicing lane clear.

Do not pour concrete wash, paint or other site liquids into a unit. They are not domestic waste, and the facility does not accept commercial process water.

What about handwashing, shade and long jobs?

Put a handwash station by each toilet group and where the crew eats, and plan for refills. For long jobs, agree a servicing calendar, a way to move units and a pickup date. Dry summers make shade and water worth planning; wetter winters make a hard access lane worth planning.

The handwash page covers what a station is and how it is refilled. The long-term rental page covers standing arrangements.

Review the plan whenever the crew changes. A short note to the provider with the new headcount is enough.