How do you hire a drain and sewer technician? Sourcing, pay, screening and red flags

A drain and sewer technician is your emergency-response hire: the work starts at a backed-up drain or sewer line in a building you serve.

It is clearing the blockage, then answering the harder question — why it blocked and whether the line is merely clogged or damaged.

BLS's picture of the trade fits the staffing reality of this role: most plumbers, pipefitters and steamfitters work full time, including nights and weekends, and plumbers are often on call to handle emergencies.

What you will still train is everything shop-specific: your pricing, your ticketing, your truck stock, your standard of job documentation.

Pick the level deliberately.

A helper or entry registrant is a training bet — paid to learn under supervision.

A working drain tech is the hire you can put on solo stoppage calls from week one, clearing plus diagnosis.

Where you also sell work that needs a plumbing licence in your state, the plumber-licensed tech is the fuller-scope hire.

Texas shows how a state structures the rungs: its law defines a drain cleaner-restricted registrant as someone registered with the plumbing board who clears obstructions in sewer and drain lines through existing code-approved openings under a responsible master plumber's supervision, and the next rung, the drain cleaner registration, requires at least 4,000 of those supervised hours and adds installing cleanouts and removing and resetting P-traps to clear obstructions.

The pool is real, but federal data never isolates it: O*NET lists Drain Technician among the reported job titles for Plumbers, Pipefitters, and Steamfitters (SOC 47-2152), next to Plumber and Pipefitter.

That occupation counted 465,840 wage-and-salary jobs nationally in May 2025; counting the self-employed, BLS's outlook puts it at 510,600 jobs in 2025 — 65% of them at plumbing, heating and air-conditioning contractors and 8% self-employed.

The day-to-day work itself — the calls, the equipment, the cleaning-versus-repair judgment — is covered in what a drain and sewer technician does; see what candidates see on the drain technician job board.

Our research found no national drain-cleaning licence.

Seven states — Florida, Kansas, Missouri, Nebraska, Nevada, New York and Wyoming — have no state plumber licence at all: there, plumbers are licensed by cities or counties, or through an industry board.

New York shows the local pattern: the state has no statewide plumber licence, and plumbing licences are issued locally; state law (General City Law Article 4, "Plumbing and Drainage", §40-a) provides for examining boards of plumbers in cities.

The states that address drain clearing directly take different approaches.

Texas registers drain workers with its plumbing board: the Drain Cleaner-Restricted, Drain Cleaner and Residential Utilities Installer registrations cost $18 each, the Residential Utilities Installer registration requires at least 2,000 hours as a Plumber's Apprentice, and all three renew only with at least six hours of approved training a year.

West Virginia draws the opposite line: its plumber-certification FAQ lists unclogging sinks, replacing faucets or washers, and installing dishwashers among what is not plumbing work requiring a plumber licence.

Other states build the sewer or drain scope into their licences and classes: Hawaii licenses plumbing contractors as specialty class C-37, with a C-37a subclass for sewer and drain line contractors; Connecticut's limited classes include P-6 and P-7 for sewer, storm and water work; North Carolina issues a Restricted Limited Plumbing contractor licence scoped to exterior building sewer, exterior water service piping 2 inches or less, exterior backflow preventers on 2-inch-or-less piping, and water filtration systems; North Dakota issues separate board licences for sewer and water installers and contractors; and Chicago's city trade licences list drain layer — though what that licence covers is not established by the research, so treat the city's own licensing pages as the authority.

Where clearing lines counts as plumbing in your state, the hire needs whatever licence your state — or city, county or industry board — requires for unsupervised plumbing work, and the rung-by-rung map is the general plumbing-licence question, not a drain one: our guide to verify plumbing license credentials covers the lookup routine.

The states our research checked handle drain licensing differently, so treat the examples above as illustrations rather than a complete map — ask your board which registration or class covers the drain work you sell before you write the posting.

Separate from any licence: NASSCO runs PACP, LACP and MACP classes for pipeline, lateral and manhole assessment, plus ITCP-CIPP inspector training.

Those are classes, not licences — evidence of inspection training you can ask about in an interview, never a substitute for a board requirement.

Drain licensing is state law — and where licensing is local, city or county law — and it changes.

Before you post the job or send a tech to a stoppage call, confirm the current registration or licence the work requires with your state plumbing board, or with the city or county where licensing is local.

Two candidate shapes fill a stoppage truck.

The first is the pipe-trade worker already clearing lines — at a competitor, a dedicated drain company, or a municipal crew — who needs only your systems.

BLS's industry count for the occupation hints at where that experience sits: 340,140 of the occupation's jobs are with building equipment contractors, but 14,960 are in utility system construction and 11,480 in local government excluding schools and hospitals — the sewer-side and municipal employers a contractor-side hire can come from.

The second shape is the plumber or journey-level apprentice who wants to specialize: the pipe skills transfer, and the camera, locating and diagnosis habits are what you build.

The formal channels are the trade's: Associated Builders and Contractors runs 67 chapters with more than 450 registered craft-training programs, and PHCC state chapters operate registered programs too — channels to hire completers from, or to enroll the helpers you already have.

BLS points apprenticeship seekers to state employment services, state apprenticeship agencies, local contractors, union-management apprenticeship committees and apprenticeship.gov.

One more channel: the Defense Department's SkillBridge program lets an employer become a training provider and host service members in their last 180 days of service.

Referrals from your crew will be your fastest channel, but an all-referral pipeline has a legal edge: recruiting mainly by word of mouth through a mostly one-group workforce can itself be discriminatory if almost all hires come from that group.

Mix channels, and keep the ads themselves clean — job ads may not signal a preference for or against applicants by race, sex, age 40+, disability or the other protected classes.

The channels, in depth, are the subject of our guide to how to find plumbers to hire, and our hub for hiring HVAC and plumbing techs collects every employer guide — the Post a Job button below puts your opening in front of the trade rather than the general public.

Start with the honest caveat: BLS publishes no drain-technician wage.

Its one plumbing occupation — Plumbers, Pipefitters, and Steamfitters (SOC 47-2152) — covers the trade at every level with no drain-versus-plumber split, so every federal figure below is a whole-occupation benchmark, not a stoppage-truck rate.

Within that occupation, the median wage was $63,800 a year ($30.67 an hour) in May 2025, and the middle half earned between $50,190 (25th percentile) and $85,110 (75th percentile).

Know what those numbers measure.

OEWS includes base pay, commissions, production bonuses and incentive pay while excluding overtime pay, shift differentials and non-production bonuses such as sign-on bonuses — so a tech who works overtime can take home more than the OEWS figures show — the published figures exclude overtime pay.

There is no federal starting-pay statistic either: the closest proxies are the occupation's 10th percentile ($21.22 an hour, $44,150 a year), its 25th percentile ($24.13 an hour, $50,190 a year) and the plumbers' helper median of $20.36 an hour (SOC 47-3015) — the grow-your-own math, if you would rather train a helper than buy a working tech outright.

Anchor the offer to your state with the state-by-state percentiles on the same occupation basis: our drain technician salary page.

You are hiring in a trade BLS projects to grow 6.8% from 2025 to 2035 — against a 3.5% average across all occupations — with about 42,000 openings a year, growth BLS calls much faster than average.

A working drain tech with a full schedule is interviewing you back.

On the pay plan itself: hourly, flat rate and commission are all in play on a stoppage truck, and the trade-offs are the same menu we break down in our HVAC technician pay plan guide.

One rule does not change with the label: a flat-rate (per-job) tech is still owed FLSA overtime, computed on total job pay divided by hours actually worked, plus half-time for each hour over 40, unless an exemption applies (FLSA §7(i)).

Our research found no published federal figure for flat-rate or commission splits — treat any percentage you hear as shop-specific, and write your numbers into the offer letter.

Write the job description before you advertise.

Under the ADA, a written description prepared before advertising or interviewing is evidence of which functions are essential — and for this hire that list is specific: solo stoppage calls, clearing plus diagnosis, camera and locating work, on-call participation, and the registration or licence tier you require.

The interview rules cut both ways.

Pre-offer, you may ask about licences, registrations, certifications, skills and work history, and you may ask candidates to describe or demonstrate how they would do a task.

You may state physical demands — work in crawl spaces, lift a set weight — and ask whether the candidate can meet them.

You may not ask about past job injuries or workers' compensation history before an offer.

The demonstration that matters for this role is narrating a recent stoppage end to end: the arrival and the backup, what they ran first and why, cable versus jetter, what the camera showed, the call between a clog and a damaged line, how they priced it, and whether the line held.

A working drain tech narrates the diagnosis as easily as the clearing; a résumé-only candidate stalls at the camera.

Ask about NASSCO's PACP, LACP and MACP classes as evidence of inspection training — remembering they are classes, not licences.

Then verify the credential rather than the story: the registration or licence number, the issuing board, the public lookup, a scope that matches the work.

Our verify plumbing license guide walks the lookup, and for the checks a home-visiting, truck-driving hire usually needs beyond the licence, our guides cover background checks for techs who work in customers' homes and MVR checks for techs who drive company trucks.

Every one of these is checkable in an afternoon, which is the point — a verifiable red flag is a decision, not a vibe.

• The registration or licence number does not clear the lookup. An unrecognized number, a name that does not match, an inactive status, or a scope that does not fit the claimed history ends the interview.
• A credential their state does not issue, or a class dressed up as one. NASSCO's PACP, LACP and MACP are assessment classes, not licences, and the credentials our research found for drain work are all issued by states or cities. A candidate who presents a class or a title as a board credential has misstated what they hold — one lookup at the board that supposedly issued it settles it.
• Hedging on supervision scope. In Texas, a drain cleaner-restricted registrant clears obstructions through existing code-approved openings under a responsible master plumber's supervision — a registrant there can say who supervises them and what their registration does and does not cover. A candidate who cannot describe their scope is how work outside a registration's limits lands on your company. Treat the answer as a claim to check with the issuing board, not as the rule itself.
• Cannot narrate a recent stoppage start to finish. What they ran first, what the camera showed, clog versus damaged line, the price, the test-out — a working tech runs through these; a résumé-only candidate stalls.
• Casual about how the line gets accessed. The scope language is specific: Texas defines its restricted registrants by code-approved existing openings. A tech who shrugs at access points is describing work your company would own.
• Pressure to be paid as a 1099 subcontractor for work that looks like employment. Under the FLSA, status turns on the economic realities of the relationship, not the label, and true independent contractors get no minimum-wage or overtime protection.

The craft is proven on this hire; your systems are not.

The first payroll rule stands either way — ride-along and training time is paid work time.

The conditions for unpaid training are narrow — outside regular hours, truly voluntary, not directly job-related, no productive work — and a new-hire ride-along fails them.

Treat this as an example shape, not a benchmark: the first stretch riding your best tech's stoppage calls to learn your pricing, ticketing and camera-and-report workflow; then solo calls with a senior tech reviewing the tickets; then the full rotation, including on-call.

Put the on-call rotation in writing before the first after-hours call, and expect the commitment to be real — BLS's own description of the trade has most plumbers, pipefitters and steamfitters working full time, including nights and weekends, with plumbers often on call to handle emergencies.

Where your state registers drain workers, make the renewal duty part of onboarding too: Texas's drain registrations renew only with at least six hours of approved training a year, so decide in week one who schedules it, who pays for it and where the record lives.

The camera half has its own track — NASSCO's PACP, LACP and MACP classes — with details to confirm on NASSCO's current class pages.

If you pay a senior tech to bring the new hire along, mind the overtime math: a mentor bonus or per-trainee stipend promised in advance is a non-discretionary bonus, and it belongs in the mentor's overtime regular rate.

And if you run tech levels, write down the criteria for each step — pay differences tied to documented seniority, merit, production or a factor other than sex are defensible under the Equal Pay Act; undocumented ones are how equal-pay claims start.

The full 90-day playbook, beyond the licence and registration questions, is our guide to onboarding new technicians.

By the end of the first quarter, hold the same three artefacts for every drain hire: a registration or licence verification on file, solo stoppage calls at the promised level, and a documented level review.

The strongest lever specific to this role is the next rung.

Where your state structures the work, fund the step up it: in Texas, the drain ladder's rungs are defined by supervised hours, and paying for the training hours and the renewal training is a retention cost you can name in advance.

Where drain work counts as plumbing, the rungs are the plumbing licence's own: as of the September 2026 research, 24 jurisdictions (the count includes the District of Columbia) run the classic apprentice → journeyman → master ladder statewide — and funding the journeyman-to-master step builds your qualifier pipeline while giving the tech a career; the licence-rung question is its own subject in our journeyman plumber hiring guide.

Budget the pay reviews from a real number: BLS's Employment Cost Index shows private-industry wages and salaries for construction and extraction occupations rose 3.9% in the 12 months ended June 2026, and for installation, maintenance and repair occupations 3.7%.

Label it what it is — wage-cost growth for the occupation groups, not a promised individual raise — and use it to keep stoppage rates from drifting under market between reviews.

Remember the market your techs see: BLS projects about 42,000 openings a year, on average, in this trade.

The shops that keep techs run predictable hours, working trucks and jetters, a documented level path and a licence ladder that pays — the retention systems are the same as any tech's, and our guide to keeping HVAC and plumbing techs covers them.

This page is employer career and business information, not legal advice. Confirm licence and registration requirements with your state plumbing board — or the city or county where licensing is local — and check pay-plan and classification questions with an employment attorney before you roll them out.