Grease Traps and Interceptors in Sacramento: FOG Compliance for Commercial Property

Grease is the plumbing obligation most likely to be handled entirely by a tenant, entirely undocumented, and entirely the landlord's problem the day a sewer agency comes asking. It is also the one where the paperwork, not the pumping, is what compliance actually turns on.

A food service tenant can have a grease interceptor pumped on schedule for three years and still fail an inspection, because the hauler was not on the agency's permitted list, or because nobody kept the manifests. Conversely a property with a modest device and a clean three-year manifest file usually has an uneventful inspection.

This page covers who needs a grease control device, which agency sets your rules, how often cleaning is actually required, what records you have to keep, and where the landlord-tenant line usually sits. For the broader plumbing program, see the commercial plumbing maintenance checklist.

Who this applies to

Food service establishments are the obvious case: restaurants, cafes, bakeries, delis, bars with kitchens, cafeterias, commissaries, ghost kitchens, grocery prepared-food departments, hospital and school kitchens, and hotel food operations.

But the obligation attaches to the property, and that is what makes it a property-management issue rather than a tenant issue. A multi-tenant retail center with two restaurants has grease infrastructure the owner is responsible for maintaining as a building system, regardless of who operates the kitchens or who signs the pumping invoice.

Mixed-use and office buildings get caught out here more often than people expect. A ground-floor cafe in an office building, or a tenant amenity kitchen that started as a break room and grew, can create a FOG obligation on a property whose manager has never thought about grease.

Which agency regulates your property

There is no single Sacramento grease rule, in the same way there is no single Sacramento backflow rule. Your obligations come from the sewer agency serving the property, and the region has several.

The Sacramento Area Sewer District — SacSewer — serves Sacramento and surrounding communities including Citrus Heights, Elk Grove, Folsom, Rancho Cordova and West Sacramento, plus portions of Sacramento and Yolo counties. Individual cities administer their own FOG ordinances within that framework, and the specifics differ between them.

SacSewer's core direction to food service establishments is straightforward: pump and haul grease trap or interceptor waste regularly to a disposal facility. The district maintains a list of permitted haulers for exactly that purpose, and publishes best management practice guides for food service establishments in English and Spanish.

Identify the sewer agency for each property before anything else, and record it per property. As with water purveyors and backflow, two buildings a few miles apart can sit under different ordinances with different thresholds and different paperwork.

Traps and interceptors are not the same thing

A grease trap is the smaller indoor unit, typically under a sink or near the fixtures it serves, holding a modest volume and needing frequent service. A grease interceptor is the larger structure, usually below grade outside the building, holding considerably more and serviced less often but at higher cost per visit.

Which one a property has is largely determined by the plumbing code and the agency at the time of installation, based on fixture count and expected flow. Sizing is not something to eyeball. If a kitchen's use has changed materially since the device went in — more covers, more fryers, a new dish machine — the existing device may now be undersized, which shows up as more frequent pumping and eventually as a violation.

When a grease control device becomes required

The trigger most property managers actually hit is not new construction. It is a remodel.

Folsom's city code, as one example of how these ordinances are written in the region, requires a grease control device on new construction, and also on renovation or remodeling that alters existing plumbing at or below grade, or that changes use in ways that increase FOG production. It can also be required when the utilities director deems it necessary for public health or safety, when a facility has a prohibited discharge, when the facility is deemed to contribute to or potentially cause a spill, or when a land use change significantly increases the potential for FOG production.

Read that list from a property manager's chair and the practical warning is clear: a tenant improvement that opens the slab, or converts retail space to food service, can create a grease obligation that did not exist the week before. That is a question to answer during TI planning, not after the health department walks the finished space.

Other agencies in the region write their thresholds differently. Confirm the specific triggers with the agency serving your property before assuming a remodel is exempt.

How often it actually has to be cleaned

The 25% rule you will hear about

Anyone who works in this space will tell you a device must be pumped when fats, oils, grease and solids reach 25% of the wetted height. It is a widely used convention and it appears in many FOG ordinances across California.

It is not universal. Folsom's ordinance, for instance, contains no cleaning frequency and no 25% threshold at all. It requires that devices be maintained in good and efficient working order at all times and that any problem be corrected immediately — a performance standard rather than a numeric trigger.

So do not assume the 25% rule applies to your property because a hauler cited it. Confirm what your agency's ordinance actually says. The distinction matters: under a numeric rule you are compliant if you stay under the threshold; under a performance standard you are compliant only if the device is working, which is a harder thing to prove after the fact and makes documentation more important, not less.

Setting a defensible frequency

Absent a stated interval, build one from evidence. Have the device measured at each service and record the FOG and solids depth as a percentage of wetted height. After three or four services you will know how fast that property fills, and you can set an interval that keeps it comfortably below any threshold with the measurements to justify it.

The variables that move the interval are the ones you would expect: covers served, menu type, how much frying happens, whether staff scrape and dry-wipe before washing, whether a garbage disposal feeds the line, dish machine temperature and detergent, and whether the device is correctly sized for current use.

A property that pumps on a fixed calendar without ever measuring is guessing in both directions — overpaying on a slow site, and running a fast one to the edge of a violation.

Use a permitted hauler, and check the list

SacSewer maintains a permitted hauler list, and this is not an administrative nicety. Waste has to reach an approved disposal facility, and the manifest chain is what proves it did. A hauler outside the permitted list can leave you with invoices that do not satisfy an inspector.

This is the same shape as backflow testing, where the tester has to be certified and registered with the specific purveyor. Confirm the hauler is currently permitted with the agency serving your property, not merely licensed or well-reviewed.

Ask where the waste goes, whether the hauler provides a manifest for every service rather than just an invoice, and whether they will supply copies directly to you when the tenant is the one paying.

The manifest file is the compliance artifact

Folsom's code requires facilities to retain all manifests, receipts and invoices of cleaning, maintenance and grease removal for no less than three years, and to make them available to the utilities director on request. Other regional ordinances impose comparable retention.

Three years is longer than most restaurant tenancies stay organized, and considerably longer than most property managers keep a vendor invoice on hand. Build the file deliberately:

• The sewer agency serving the property, named explicitly
• Device type, size, location and installation date, with a photograph
• The permitted hauler used, and confirmation of current permit status
• A manifest for every service, not just an invoice
• Measured FOG and solids depth at each service, as a percentage of wetted height
• The disposal facility the waste went to
• Any agency inspection reports and correspondence
• Repair, replacement and re-sizing history
• Which party — landlord or tenant — is contractually responsible, and for which portion

Where a tenant arranges service directly, require copies of manifests as a lease obligation with a stated delivery cadence. A tenant who leaves mid-term takes their filing cabinet with them, and the three-year retention obligation stays with the property.

What an inspector looks at

Agencies generally reserve the right to inspect the grease control device itself, the maintenance and cleaning records, and the grease waste pumping manifests, during business hours. Folsom's code grants its utilities director exactly those three.

In practice an inspection goes device, then paperwork. The device is checked for accumulation, function and obvious neglect. Then the records are checked to see whether the service history matches what the device looks like. A clean device with no manifests raises a different question than a full device with a complete file, and neither is a good position.

What non-compliance costs

Under Folsom's ordinance, FOG violations are Level E violations carrying fines up to $1,000 per violation. Service disconnection is available as a remedy, and reconnection requires posting a bond equal to five times the city's cost.

Those numbers are Folsom's; other agencies set their own. But the structure is consistent across the region and worth understanding: a per-violation fine, the ability to disconnect sewer service, and a reconnection cost designed to be punitive. For a restaurant tenant, sewer disconnection is closure.

The larger exposure is usually not the fine. It is a sanitary sewer overflow traced back to your property, which brings cleanup cost, potential liability, and an agency that now inspects you on a much shorter cycle.

Practices that reduce what you spend on pumping

Pumping frequency is a function of how much grease reaches the device, and most of that is behavioral rather than mechanical. The agency guides exist because these measures work:

• Dry-wipe and scrape dishes and pans before they reach the sink
• Collect used fryer oil separately for rendering rather than sending it down a drain
• Use drain screens on all kitchen sinks and keep them in place
• Never pour hot grease down a drain, including into a floor sink
• Avoid emulsifiers, degreasers and enzyme additives that move grease past the device rather than capturing it
• Keep the garbage disposal off the grease line where the plumbing allows
• Post and train the practice in the languages the kitchen staff actually use
• Retrain on turnover, which in food service is constant

Enzyme and bacterial additives deserve a specific caution. Products that emulsify grease can make a device look cleaner while sending FOG downstream into the collection system, which is the exact outcome the ordinance exists to prevent. Several agencies prohibit them. Check before any tenant or vendor introduces one.

Whose obligation is it, landlord or tenant?

Usually both, in ways the lease often fails to separate. The tenant generates the grease and typically pays for pumping. The owner owns the device, which is building infrastructure, and the agency's enforcement generally attaches to the property and its owner.

The provisions worth having explicit in a food service lease:

• Who arranges and pays for routine pumping, at what minimum frequency
• The requirement to use a hauler permitted by the serving agency
• A duty to deliver manifests to the landlord within a stated number of days
• Who bears repair, replacement and re-sizing of the device itself
• Who bears cost if a change in the tenant's operation requires a larger device
• Responsibility for line jetting and for any overflow traced to the tenant's discharge
• Landlord right of access to inspect the device and records
• What happens to the manifest file at lease end

Where a lease is silent, the owner usually ends up holding the infrastructure cost and the agency exposure while having no visibility into whether pumping happened. Fixing that at renewal is cheap; fixing it after an overflow is not.

What grease service costs, and what moves it

Pumping is generally priced per service, driven mostly by device volume and how far the waste travels to an approved disposal facility. The variables that actually change a quote:

• Device type and capacity — an indoor trap and an outdoor interceptor are different jobs
• Access: vault depth, lid weight, whether a truck can get close, parking constraints
• Whether service must happen outside operating hours
• Full pump-out versus partial skimming, which are not the same service
• Whether the device is cleaned and inspected or merely emptied
• Disposal facility distance and tipping cost
• Whether measurement and a manifest are included or extra
• Contracted route frequency versus on-call service
• Line jetting, if it is bundled

Ask for a per-service price with the device size stated, confirmation that a manifest is provided every time, and confirmation that FOG depth is measured and recorded. Those three make competing quotes comparable and give you the data to set frequency later.

Questions to ask a grease hauler

• Are you currently permitted with the sewer agency serving this property?
• Which approved disposal facility does the waste go to?
• Do you provide a manifest for every service, and can copies come to us directly?
• Do you measure and record FOG and solids depth at each service?
• Is this a full pump-out or a partial skim?
• Is the device cleaned and inspected, or only emptied?
• What is the price per service, and what is the access assumption?
• Can you service outside our tenants' operating hours?
• Will you tell us if the device appears undersized for current use?
• Do you offer line jetting, and is it separate?
• Can you schedule multiple properties on a coordinated route?

Frequently asked questions

How often does a grease interceptor need to be pumped in Sacramento?

It depends on the sewer agency serving the property and on how fast the device fills. Many California FOG ordinances use a 25% of wetted height threshold, but that is not universal — Folsom's code, for example, sets no numeric frequency and instead requires the device be kept in good and efficient working order at all times. Confirm your agency's rule, then measure accumulation at each service and set an interval from the evidence.

Is the 25% rule a California law?

It is a widely used convention that appears in many local FOG ordinances, not a single statewide rule that applies everywhere. Some regional ordinances use it, others use a performance standard instead. Because the requirement is set locally, the only reliable answer comes from the ordinance of the agency serving your address.

How long do grease records have to be kept?

Folsom's code requires manifests, receipts and invoices for cleaning, maintenance and grease removal to be retained for no less than three years and made available on request. Comparable retention is typical across regional ordinances. Because tenancies often turn over faster than three years, the manifest file should live with the property, not the tenant.

Does a tenant improvement trigger a grease interceptor requirement?

It can. Folsom's ordinance names renovation or remodeling that alters existing plumbing at or below grade, or that changes use in ways that increase FOG production, as triggering conditions — alongside new construction and significant land use changes. Converting retail space to food service, or opening the slab in an existing kitchen, is exactly the scenario to check before design is finalized.

Who pays for grease trap cleaning, the landlord or the tenant?

Usually the tenant pays for pumping since they generate the grease, while the owner owns the device as building infrastructure and generally carries the agency exposure. Problems arise when the lease does not separate them. Spell out frequency, use of a permitted hauler, manifest delivery to the landlord, and who bears device repair, replacement and re-sizing.

Can we use enzyme or bacterial additives instead of pumping?

Treat that as prohibited unless your agency says otherwise. Products that emulsify grease can make a device appear cleaner while passing FOG downstream into the collection system, which is the outcome these programs exist to prevent. Several agencies bar them outright. Confirm before any tenant or vendor introduces one.

What happens if we fail a FOG inspection?

Consequences are set by the local ordinance. Under Folsom's code, FOG violations are Level E violations with fines up to $1,000 per violation, sewer service disconnection is available as a remedy, and reconnection requires a bond equal to five times the city's cost. The larger exposure is usually an overflow traced to the property, which brings cleanup cost, liability, and a much shorter inspection cycle afterward.

Find commercial plumbing and grease service providers in Sacramento

Sacramento Commercial Services helps property owners and managers compare commercial plumbing, kitchen exhaust and grease services, and industrial cleaning providers across the Sacramento region.

Before scheduling, identify the sewer agency serving the property, confirm your hauler is currently permitted with that agency, and make sure manifests reach the property file — not just the tenant's accounts payable.