The same three drains back up every quarter. If you manage apartments, an HOA, or a portfolio of buildings, you already know your problem lines by name — the stack in Building C, the lateral behind the restaurant tenant, the kitchen line in the units that keep pouring grease. Recurring mainline and lateral blockages are a fact of multifamily life, and how you handle them decides whether they're a controlled maintenance cost or a stream of after-hours emergencies.
This page lays out how to build a preventive jetting program, when it makes sense to bring jetting in-house versus contract it out, and which equipment fits a maintenance team's machine and budget.
Why the Same Lines Keep Backing Up
Multifamily drains fail on a schedule for predictable reasons: tenant behavior (grease, wipes, hair), long shared laterals that collect debris, aging cast-iron or clay pipe that scales and roots, and mainlines that carry the load of dozens of units. Snaking clears the immediate plug, but it doesn't restore the pipe — the line narrows again and the next backup is already on its way.
Hydro jetting scours the full pipe diameter, so a line that's jetted stays clear far longer than one that's cabled. If you're new to the method, our What Is Hydro Jetting? A Complete Guide for Property Managers is written for exactly your role, and Jetter vs. Snake covers why jetting wins on recurring lines.
Build a Preventive Maintenance Program
The goal is to move spend from unplanned emergencies to a scheduled program you control. A backup at 2 a.m. means an emergency-rate callout, an angry tenant, and possible unit damage. The same line jetted on a Tuesday morning costs a fraction and never floods anyone.
Where to start
- Map your problem lines. Pull work orders from the last 12–24 months. The lines that repeat are your program.
- Set intervals by history. Grease-heavy kitchen lines and known root laterals get the tightest schedule; clean stacks get an annual pass.
- Camera the worst offenders. Knowing whether it's grease, roots, or scale tells you the right nozzle and the right interval.
- Jet before peak seasons. Get ahead of holiday cooking loads and winter root/scale problems.
Our guide to preventive drain maintenance and landing HOA and restaurant contracts lay out the schedule and pricing logic in detail — useful whether you're running the program in-house or vetting a contractor's proposal.
In-House Jetting vs. Contracting It Out
Every property team eventually faces this decision. Here's the honest framing.
Contract it out when…
- Your blockages are occasional and spread across many properties.
- You don't have maintenance staff with time to train and run a jetter safely.
- You're dealing with large mains that need a big truck/trailer jetter.
Bring it in-house when…
- You have recurring, predictable blockages you're paying premium callout rates to clear.
- Your maintenance team already owns a pressure washer or small jetter (2–20 GPM, 1,500–4,000 PSI, 1/4"/3/8" hose is the multifamily sweet spot).
- Response time matters — an in-house rig clears a slow drain before it becomes a flooded unit.
Run the numbers before you decide. The Economics of Owning vs. Renting a Sewer Jetter and How Much Does a Sewer Jetter Cost? put real math around it, and our ROI Calculator lets you plug in your own callout costs and blockage frequency to see the payback period on owning equipment. Already have a pressure washer? See turning a pressure washer into a jetter.
Small-Machine-Friendly Nozzle Picks
Most maintenance teams run smaller machines, and the good news is that the right nozzle matters more than raw horsepower. On a 2–20 GPM machine with 1/4" or 3/8" hose, these cover the jobs a property portfolio throws at you:
Everyday flushing & maintenance
- KEG Sewer Flush Nozzle 3/8" — $75.42 — high-flush general clearing for routine mainline and lateral passes.
- KEG Standard Nozzle w/ Forward Jet 3/8" — $73.13 — forward jet opens soft plugs, rear jets pull it down and flush.
- KEG Cleaning Nozzle 3/8" — $372.53 — rear-jet pattern that scours grease and scale off the pipe wall.
Roots & tougher blockages
- KEG Rambo Nozzle 3/8" — $283.56 — aggressive rear-jet penetration for packed lines.
- KEG Rotor Nozzle 3/8" — $467.58 — rotating jets for 360° wall cleaning, roots, and scale.
Filter the full lineup by 3/8" hose size, or browse by job: Residential Mainlines, Root & Blockage, and Maintenance Jobs. Not sure which fits your machine? The Nozzle Guide matches one in about a minute, or call (864) 804-6637. For roots specifically, see How to Jet Roots Out of a Sewer Line; for a full mainline, How to Jet a Main Sewer Line.
Kits to Outfit a Maintenance Team
If you're standing up an in-house program, a kit gets your crew every configuration they need in one box — no guessing which nozzles fit:
- 1/4" Plumber Jetter Nozzle Starter Kit — $279.00 — entry kit for small machines and interior lines.
- Pro Drain Kit 1/4" — $649.00 — fuller 1/4" loadout: flushing, grease, and cutting covered.
- 1/4" Rambo + Rotor Combo — $749.00 — root and drain cleaning pair for problem laterals.
- 3/8" Plumber Jetter Nozzle Kit — $714.00 — more flow and nozzles for higher-GPM machines and bigger lines.
- Pro Drain Kit 3/8" — $1,999.00 — a complete 3/8" professional loadout for a dedicated maintenance rig.
Browse all Starter Kits and Plumber Kits. For a full setup guide, read Building a Jetter Truck.
Budgeting: The Real Cost of Owning
The sticker price of a nozzle isn't the number that matters — cost per job is. Our nozzles are built to be rebuilt, not replaced: when the jets wear, your team swaps the ceramic or steel inserts instead of buying a new nozzle. Insert cost per job can run as low as $1.50, at 80%+ jetting efficiency, and replacement inserts ship the same day so a worn nozzle never sidelines a crew. Don't change the nozzle, change the inserts.
That's a real line-item saving across a portfolio — see Why Replaceable Inserts Beat Buying New Nozzles. Every insert carries a 5-year ceramic / 3-year steel warranty, included (Warranty details). And because these are engineered & manufactured by KEG Technologies — built in Germany, assembled in Spartanburg, SC — they pass through on the first try; cheap nozzles take 3–4 passes, which is time your maintenance tech isn't spending on the next work order.
Note for larger portfolios: Net 30 terms are available on 3/4"-and-up products with B2B approval — email sales@jetterprosupply.com to set it up.
Frequently Asked Questions
How often should apartment or HOA sewer lines be jetted?
Base it on history. Grease-heavy kitchen lines and known root laterals may need quarterly or semi-annual jetting; clean stacks often do fine with an annual pass. Camera the worst lines and let condition set the interval.
Is it cheaper to buy a jetter or keep calling a plumber?
If you're paying repeat callout rates on the same lines, owning usually pays back fast. Plug your numbers into the ROI Calculator or read Owning vs. Renting.
Can our maintenance team run a jetter safely?
Yes, with training. Start on smaller machines and interior lines, follow safe-operating practice, and step up as the crew gains reps. We're glad to help you spec a starter setup.
What size machine and hose do most properties need?
The multifamily sweet spot is 2–20 GPM, 1,500–4,000 PSI, with 1/4"/3/8"/1/2" hose. Match the nozzle NPT to your hose — see What GPM and PSI Do I Need?
Will jetting damage older pipes in our buildings?
Matched to the pipe, no. Flow and pressure should suit the material and diameter — call (864) 804-6637 and we'll help you spec it for cast iron, clay, or PVC.
Get Your Recurring Blockages Under Control
Shop mainline nozzles, root nozzles, and kits, or use the Nozzle Guide to get matched. Building a program and want a second opinion? Call (864) 804-6637 or email sales@jetterprosupply.com — real jetting people, not a call center. Free shipping over $199, 2–3 day delivery, 30-day returns. Also serving restaurants & food service and municipal crews.