Hydrojet Sewer + Drain Cleaning

Why this matters

Hydrojetting (high-pressure water jet) is the gold-standard drain cleaning method - clears what a snake can't (grease, scale, root mats), restores pipe to near-original diameter, + leaves pipe walls clean instead of just punched through. Margin runs 65 - 80% once the tooling is amortized, because the consumable is water and the cost is your time on site. The plumber who jets clears the pipe in 30 minutes that the rooter guy spent 3 hours cabling + still has a callback in 6 weeks.

What hydrojetting does

A pump delivers water at 1,500 - 4,000 PSI through a flexible hose terminating in a multi-jet nozzle:

• Forward jets cut + flush debris
• Rearward (propulsion) jets pull the hose forward + flush behind
• Net effect: nozzle self-advances + scours pipe wall as it goes
• Water + debris flush back to cleanout

Vs a cable snake, hydrojet:

• Cleans full pipe diameter (cable cleans a hole through the blockage)
• Cuts grease, scale, sludge that cable can't grab
• Cuts soft roots; harder roots need cable first OR specialty nozzle
• Doesn't require contact angle for cutting

Equipment

• Trailer-mount: 8 - 40 GPM @ 2,000 - 4,000 PSI, engine-driven, 250 - 500 ft hose reel, 200 - 500 gal tank. For residential mains + commercial sewers.
• Cart: 4 - 8 GPM @ 1,500 - 3,000 PSI, electric or small gas, 150 - 300 ft hose. Residential interior lines, sinks, tubs.
• Mini-jet: 1.5 - 4 GPM @ 1,000 - 2,000 PSI, 50 - 100 ft hose. Kitchen sinks, lav drains, condensate lines.

Nozzles: flusher (0° + rear jets, standard cleaning), penetrator (forward jet cuts blockage, follow with flusher), root cutter / chain knocker (rotating head for tough roots), pipe cleaner (tight grouping for wall scour), camera nozzle (integrated inspect-while-clean).

When hydrojet vs cable

Hydrojet wins:

• Grease in kitchen line
• Scale in old galvanized OR cast iron
• Soft tree roots in 2 - 6" lateral
• Sludge in commercial drain
• Pre-camera inspection cleanup
• Recurring clog at same location

Cable wins:

• One-time hairball / paper / object blockage
• Hard roots that need cutting
• Cast iron with offset joints (jet hose snags)
• Pipe with collapsed section (jet won't pass)

Both used together:

• Camera scope first → determine blockage type
• Hard roots: cable cuts, then hydrojet flushes
• Heavy grease: hydrojet cuts, cable verifies path clear

Procedure (typical residential 4" main line)

Pre-job:

1. Locate cleanout (front yard cleanout, basement floor cleanout, or roof vent)
2. Inspect cleanout fitting condition (corroded fittings can blow out under jet pressure)
3. Set up water source: customer's outside hose bib (verify flow + pressure) OR trailer tank
4. Position machine, run discharge hose to drain or sump
5. Run camera scope first if customer wants documentation

Setup:

1. Connect water supply to pump inlet
2. Connect jet hose to pump outlet
3. Insert hose + nozzle through cleanout, 5 - 10 ft into pipe
4. Set pressure (start at 2,000 PSI for residential 4" main)
5. Start pump + verify water flow

Jetting:

1. Activate jet - nozzle self-advances on rearward jets
2. Feed hose by hand at controlled rate (5 - 10 ft/min)
3. As nozzle hits blockage, slow feed; let jets cut
4. When clear, advance through to next blockage OR full length
5. At maximum reach, retract slowly - return pass scours pipe wall
6. Repeat passes (typically 2 - 3 full-length passes for thorough clean)

Verification:

1. Camera scope after final pass
2. Run customer's interior fixtures to verify flow
3. Inspect cleanout flange + sewer line for leaks created by jet pressure
4. Cap cleanout

Safety

Water pressure: 2,000+ PSI cuts skin + causes severe injection injuries. Never point at anyone; hold hose with both hands; expect reactive force at nozzle; wear jet-rated cut-resistant waterproof gloves.

Pipe pressure: jet can damage degraded pipe (terra cotta, Orangeburg, eroded cast iron). Camera-scope old systems first; reduce pressure on suspect pipe; stop if burst suspected.

Cleanout blowback: water + debris flies back at operator; face flange away at startup; wear face shield + raincoat-grade waterproof; establish flow direction before pressurizing.

Property protection: drop cloth from cleanout to discharge drain; black water discharge to lawn/driveway is messy; use containment indoors; truck-mount with discharge tank when no nearby drain.

Customer education

The post-jet conversation:

• "We removed [grease / roots / scale] from your line. Pipe is now clean."
• "Without changes to [usage / vegetation], buildup returns in [3 - 12 months]."
• "Recommendation: [annual jet / root treatment / change kitchen habits / sewer liner install for tree roots]."
• "Camera shows pipe condition [good / declining / failing]; here's what's needed."

Customers without education return for emergencies; educated customers buy maintenance + don't call angry when the clog returns.

Camera-jet integration

The combined service:

1. Customer's drain clogged
2. Tech runs camera first
3. Documents condition, location, type of blockage
4. Recommends approach (cable, jet, repair)
5. Performs cleaning
6. Post-clean camera (proof of job)
7. Records video + provides to customer

Adds to ticket; converts more customers to repairs needed.

References

• ASSE 5060 (drain cleaning standards)
• Plumbing Manufacturers Council pipe damage guidelines
• Sewer Equipment Co + Spartan Tool + RIDGID operating manuals
• Manuall internal: Sewer Camera Inspection, Clear Main Sewer Line