How to Reduce Clogged Drain Maintenance Tickets in a Rental Property

By SemperScreen®. We own residential and commercial real estate properties across the United States, and we built the permanent sink screen for our own buildings before we sold it to anyone else.

The fastest way to reduce clogged drain maintenance tickets in rental property is to stop food from entering the drain line at all. Tenant education, monthly treatments and snaking each address the clog after the debris is already in the pipe. A screen the tenant cannot remove works on every unit, every day, without anyone remembering to do anything.

Who pays when a tenant clogs the drain?

Responsibility usually turns on two things: what the lease says, and whether the blockage came from ordinary use or from misuse. Owners generally carry the plumbing system itself. Tenants generally carry damage they cause. Read your own lease and check your own jurisdiction, because the split is written locally and not federally.

California writes both halves down, and it is a useful worked example because the structure repeats in most states. A dwelling is untenantable if it substantially lacks "plumbing or gas facilities that conformed to applicable law in effect at the time of installation, maintained in good working order."¹ That is the owner's side. The tenant's side sits two sections later: no duty to repair arises on the owner "if the tenant is in substantial violation" of listed obligations and "the tenant's violation contributes substantially to the existence of the dilapidation," and those obligations include disposing of "all rubbish, garbage and other waste, in a clean and sanitary manner" and to "properly use and operate all electrical, gas and plumbing fixtures."²

Florida writes the same split more plainly, and states both halves in one chapter. The landlord must maintain "the plumbing in reasonable working condition." The tenant must "keep all plumbing fixtures in the dwelling unit or used by the tenant clean and sanitary and in repair" and "use and operate in a reasonable manner all electrical, plumbing, sanitary, heating, ventilating, air-conditioning and other facilities and appliances." Then the statute closes the loop: "The landlord is not responsible to the tenant under this section for conditions created or caused by the negligent or wrongful act or omission of the tenant, a member of the tenant's family, or other person on the premises with the tenant's consent."³ The Florida Bar puts the tenant's side in one sentence for consumers: the tenant "must maintain the dwelling without damage, other than ordinary wear and tear, keep the dwelling clean and maintain the plumbing."⁴

Most states adopting the uniform landlord-tenant framework carry some version of the same construction.

Read the two halves together and the operational problem appears. The owner owes working plumbing. The tenant owes reasonable use. Recovering the cost requires showing the tenant's conduct "contributes substantially" to the blockage, and that is the part that fails in practice.

The part that costs money is the middle. A line that closed up over six months has no single culprit, and there is no way to prove what went down it. Staff time spent arguing the charge back routinely exceeds the plumber's invoice, and the unit produces the same ticket again the following quarter.

Unresolved, it escalates past the two of you. In New York City the Department of Housing Preservation and Development enforces the Housing Maintenance Code, responds to conditions reported through 311, and can issue violations, hire contractors to make critical repairs when an owner does not, and bring Housing Court actions.⁵

Four steps landlords can do before the next plumbing maintenance call:

1. Read the plumbing and damage clauses in the lease you actually use.
2. Photograph and record what comes out of the line on every call.
3. Write the charge-back policy once, and apply it to every unit the same way.
4. Remove the cause, so the question stops arriving.

Why do the same units keep generating clogged drain maintenance tickets?

Because nothing about the unit changed. Drain and plumbing clogs are one of the top three maintenance ticket categories, and a cleared drain is a cleared drain rather than a fixed one. The kitchen that fed the last blockage feeds the next one on the same schedule.

Grease does most of the quiet damage. EPA's National Pretreatment Program fact sheet, citing the agency's own Report to Congress on sewer overflows, records that "grease from restaurants, homes, and industrial sources are the most common cause (47%) of reported blockages," and that grease "solidifies, reduces conveyance capacity, and blocks flow."⁶ Food solids give it something to build on.

Volume also moves with cooking. Roto-Rooter reports that its own incoming service calls rise 50% over an average Friday on the day after Thanksgiving, and 21% across the Thursday-through-Sunday holiday weekend.⁷ Holiday weeks concentrate what the rest of the year spreads out.

What is going down there is not a mystery either. Our list of the foods that cause clogged drains covers the repeat offenders, and none of them are surprising to a maintenance tech.

Does a drain screen actually reduce clog frequency?

Yes for the solids it physically stops, and the size of the effect comes down to two variables the category rarely separates. The first is how small the openings are, because a cover with wide gaps passes exactly the particles that build a blockage. The second is whether the screen is still in the drain, because a cover that lifts out gets left out.

NIOSH ranks engineering controls above administrative controls such as training, because engineering controls work without significant human interaction, and it lists preventing users from modifying or interfering with the control among the things an engineering control should do.⁸ A line in the move-in packet is an administrative control. A drain that will not pass food is an engineering one.

State grease guidance treats removal as the expected failure rather than an edge case. North Carolina's Department of Environment and Natural Resources tells food service operators that "it is important to educate kitchen staff not to remove drain screens," and that "the success of dry clean up is dependent upon the behavior of the employee and availability of the tools for removal of food waste before washing."⁹ A state agency does not write that instruction unless removal is the normal failure.

The recommendation itself is not in dispute anywhere in the category. What the category leaves unanswered is what happens when the screen is removable.

Is a monthly drain treatment program better than a one-time fix?

They solve different halves of the problem, which is why comparing them head to head produces the wrong answer. An enzyme or bacterial treatment works on what has already coated the inside of the pipe: grease film, soap residue, organic buildup. It does nothing about a chicken bone. A physical barrier works on the solids and does nothing about dissolved grease.

• Use a recurring treatment for grease film and soft buildup inside the line.
• Use a physical barrier for solids no treatment can dissolve.
• Budget the treatment as an operating cost that repeats every month.
• Budget the barrier once, per drain.
• Track the ticket log by unit rather than by building, so the repeat offenders surface.

Caustic drain openers sit outside both lanes. They attack the blockage chemically, sit in the line when they fail to clear it, and can be hazardous for whoever opens that pipe next. They also leave the cause untouched, so the drain closes again on its own schedule.

Owners running aging cast iron have a third consideration, covered in how to protect aging cast iron drain lines without repiping.

Will tenants put up with scooping food out of the screen?

Some will grumble the first week. The comparison that matters is one scoop into the trash against a sink full of standing water, a work order, a day of waiting and a plumber in the kitchen.

The maintenance side raises the other version of this question: does a fixed screen get in the way of servicing the trap? It does not. HUD's federal construction standard for manufactured homes requires that traps be "designed and installed so the “U” bend is removable without removing the strainers from the fixture," and that continuous wastes and tailpieces permanently attached to the U-bend be removable the same way.¹⁰ The trap still opens for service from below.

Is a non-removable screen allowed in a rental unit?

Requirements vary by jurisdiction, so confirm yours before anything is scheduled. The pattern across the codes we have read is consistent: they describe what the fitting has to do, and leave the means open.

The federal construction standard HUD applies to manufactured homes puts it this way: "The waste outlet of all plumbing fixtures, other than toilets, shall be equipped with a drain fitting that will provide an adequate unobstructed waterway."¹¹ That language sets a performance test and leaves the choice of fitting open.

Illinois writes the same test into its state plumbing code. Sinks need a waste outlet of at least one and one-half inches, and "a crossbar, strainer, or other means shall be provided to restrict the clear opening of the waste outlet," with "no kitchen sink basket…less than three and one-half (3 ½) inches in diameter"; sinks used for food preparation are Type 304 stainless steel construction.¹² Minnesota's plumbing code, which amends the Uniform Plumbing Code rather than the IPC, reaches the same place from the other model code: "Waste outlets shall be provided with an approved strainer."¹³

One regulator goes further and requires a fixed one. Minnesota's nursing-home construction rules specify that institutional fittings "must include a mixing faucet, gooseneck spout or other approved spout, wrist-action controls, and an open grid strainer on the waste in the sinks."¹⁴ An open grid on the waste is a permanent screen by another name, written into a health department's own standard for new construction.

Every one of these provisions asks the opening to be restricted and stays silent on removability. If the plan also involves taking the disposal out of the unit, the habitability question is covered in can a landlord remove a garbage disposal from a rental. SemperScreen® recommends that you always refer to local building codes when modifying a building's plumbing system.

What goes in the drain instead?

The SemperScreen® permanent sink screen is the only non-removable permanent sink screen. It fits standard 3½" drains and stops food waste down to grains of rice. Cleaning is one step. Just scoop it out!

It is polished stainless (304 stainless steel), installs in ~15 minutes per drain, retrofit, no plumbing modifications, and was tested and COMPLIED with ASME A112.18.2-2020 / CSA B125.2-20. The test reports are on our site. It carries a Lifetime residential warranty. Rental and commercial terms are on our shipping and warranty page.

On the arithmetic property owners actually care about, it pays back within the first prevented service call — typically 30–90 days.

"Clogged drain lines in our apartment buildings are significantly reduced after installing SemperScreen® sink strainers. This product pays for itself 5 times over with just the first blockage or repair it prevents. Very few products in the apartment industry have that kind of return."

Patrick and Robert, BLVD Capital

For owners weighing this against the rest of the operating budget, how reducing water waste in multifamily properties impacts NOI works through the same portfolio math on the water side.

Shop SemperScreen® →

For rental and property teams: We know you have at least one drain that keeps clogging (we have experience with those). Contact us and let's discuss testing our permanent sink screens in those bad drains.

Commercial properties (restaurants, hotels, retail breakrooms, hospitals, senior care facilities, office breakrooms, industrial warehouses) have some of the same issues with food waste. Find out what we recommend in these larger facilities.

Frequently asked questions

Are landlords responsible for unclogging drains?
Usually yes for the plumbing system itself, and usually not for a blockage the tenant caused. California, for example, requires plumbing facilities maintained in good working order, then removes that duty where a tenant's substantial violation of their own obligations contributes substantially to the problem. Which half applies turns on proving the cause, so check your lease and your jurisdiction.

How much does it typically cost to unclog a drain in a rental unit?
Our published figure for a drain or plumbing clog is $250+ per call. The invoice is only part of it. Add the staff time to log the ticket, schedule the vendor, let them in and close the record, then add it again the next time the same unit backs up.

Is a clogged drain considered an emergency?
A slow drain is normally a routine work order. A backup that puts sewage into the unit, or that takes out the only kitchen sink or the only bathroom, is escalated because it goes to habitability rather than convenience. Set the threshold in writing so staff and tenants apply the same one.

Do monthly drain treatments prevent clogs?
They work on grease film and soft organic buildup inside the pipe. They cannot dissolve a bone, a fruit pit or a handful of rice, so a treatment program and a physical barrier cover different failure modes rather than replacing each other.

Are drain screens effective at reducing clog frequency?
For solids, yes, with two conditions. The openings have to be small enough to stop the particles that build a blockage, and the screen has to still be in the drain when the sink gets used. A cover that lifts out is only as good as the last person who put it back.

References

1. California Legislature. "California Civil Code § 1941.1(a)(2), Untenantable dwellings." Retrieved from https://california.public.law/codes/ca_civ_code_section_1941.1
2. California Legislature. "California Civil Code § 1941.2(a), Tenant's affirmative obligations." Amended by Stats. 1979, Ch. 307. Retrieved from https://codes.findlaw.com/ca/civil-code/civ-sect-1941-2/
3. The Florida Senate. "Fla. Stat. §§ 83.51(1)(b), 83.51(4) and 83.52(4)–(5), Landlord's obligation to maintain premises; Tenant's obligation to maintain dwelling unit," Florida Residential Landlord and Tenant Act, ch. 83, pt. II. 2024 Florida Statutes. Retrieved from https://www.flsenate.gov/Laws/Statutes/2024/83.52
4. The Florida Bar. "Consumer Pamphlet: Rights and Duties of Tenants and Landlords." Updated May 2025. Retrieved from https://www.floridabar.org/public/consumer/tip014/
5. New York City Department of Housing Preservation and Development. "About HPD: enforcement of the New York City Housing Maintenance Code and response to 311 complaints." NYC Government Publications Portal. Retrieved from https://a860-gpp.nyc.gov/downloads/2227mq15f?locale=en
6. U.S. Environmental Protection Agency, Office of Water. "National Pretreatment Program (40 CFR 403): Controlling Fats, Oils, and Grease Discharges from Food Service Establishments." EPA-833-F-12-003. September 2012. The 47% figure originates in EPA-833-R-04-001, Impacts and Controls of CSOs and SSOs, August 2004. Retrieved from https://www.epa.gov/system/files/documents/2021-07/pretreatment_foodservice_fs.pdf
7. Roto-Rooter. "'Brown Friday' After Thanksgiving: The Busiest Day of the Year for Plumbers." PR Newswire. November 20, 2025. Retrieved from https://www.prnewswire.com/news-releases/brown-friday-after-thanksgiving-the-busiest-day-of-the-year-for-plumbers-302622030.html
8. National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention. "Hierarchy of Controls." Updated April 10, 2024. Retrieved from https://www.cdc.gov/niosh/hierarchy-of-controls/about/index.html
9. North Carolina Department of Environment and Natural Resources, Division of Pollution Prevention and Environmental Assistance and Division of Environmental Health. "Grease Goblin: A Fact Sheet for Best Management Practices for Fats, Oils, and Grease." DPPEA-FY00-08. North Carolina Pretreatment Consortium. Retrieved from https://carync.gov/home/showpublisheddocument/970/636030903411870000
10. U.S. Department of Housing and Urban Development. "24 CFR § 3280.606(a)(9)(iv), Traps and cleanouts." Manufactured Home Construction and Safety Standards, Subpart G. Retrieved from https://www.law.cornell.edu/cfr/text/24/3280.606
11. U.S. Department of Housing and Urban Development. "24 CFR § 3280.607(a)(2), Strainers, Plumbing fixtures." Manufactured Home Construction and Safety Standards, Subpart G. Last amended 89 FR 75752, September 16, 2024. Retrieved from https://www.law.cornell.edu/cfr/text/24/3280.607
12. Illinois Department of Public Health. "77 Ill. Adm. Code § 890.1760, Sinks." Illinois Plumbing Code, Part 890. 28 Ill. Reg., amended effective February 18, 2004. Retrieved from https://www.ilga.gov/ftp/JCAR/AdminCode/077/077008900L17600R.html
13. Minnesota Department of Labor and Industry. "Minn. R. 4714.0420, Sinks," Minnesota Plumbing Code, amending Uniform Plumbing Code § 420.4. Office of the Revisor of Statutes, published September 27, 2021. Retrieved from https://revisor.mn.gov/rules/4714.0420/version/2021-09-27T13:19:05-05:00
14. Minnesota Department of Health. "Minn. R. 4658.4505, subp. 1, Plumbing; new construction," ch. 4658 Nursing Homes. Minn. Stat. §§ 144A.04, 144A.08. Office of the Revisor of Statutes. Retrieved from https://www.revisor.mn.gov/rules/4658.4505/version/2014-01-18T06:51:24-06:00