Updated May 2026 · BLS OEWS 2024
Septic Tank Servicer Salary in Seattle
2024 BLS OEWS Data · Plumbing · COL Index: 149
Septic Tank Servicers in Seattle, WA earn a median annual wage of $62,830 per 2024 BLS OEWS data, with the 10th percentile at $49,110 and the 90th at $85,590. After cost of living, that translates to $42,168 in U.S.-average purchasing power. Trade Pay Score: D (40/100).
What Septic Tank Servicers Take Home in Seattle
The $36,480 spread between entry-level and top-decile septic tank servicers in Seattle is relatively narrow — about 58% of the median. That tight band usually signals a trade where pay scales primarily with experience rather than employer or specialization. New entrants can expect to climb steadily toward median pay over their first 5-10 years.
Seattle's cost-of-living index of 149 is well above the U.S. average — meaning a septic tank servicer earning $62,830 here brings home roughly $42,168 in U.S.-average purchasing power. That gap between nominal and real pay is one of the largest in the country and reflects expensive housing, transportation, and services. Workers should weigh whether the headline pay actually clears the cost-of-living premium.
With a Trade Pay Score of 40 (D), this trade-city pairing is below average. That typically reflects either weak nominal wages, sluggish 5-year wage growth, a high cost of living that hollows out real pay, or some combination. Workers should examine both the per-trade page (other cities for the same trade) and the per-city page (other trades in the same metro) to find a stronger fit.
Salary Distribution
Percentile Breakdown
| Level | Salary | COL-Adjusted |
|---|---|---|
| 10th Percentile (Apprentice / Entry) | $49,110 | $32,960 |
| 25th Percentile (Early Career) | $57,180 | $38,376 |
| 50th Percentile (Journeyman / Median) | $62,830 | $42,168 |
| 75th Percentile (Experienced) | $80,230 | $53,846 |
| 90th Percentile (Master / Foreman) | $85,590 | $57,443 |
How These Numbers Are Calculated
Every wage figure here comes from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics (OEWS) program at bls.gov/oes — a survey of about 1.2 million employers per release covering more than 800 occupations and every U.S. metropolitan statistical area. The Trade Pay Score combines raw median pay (30%), 5-year wage growth (25%), employment depth (25%), and cost-of-living-adjusted purchasing power (20%) into a single 0-100 grade. Read the full methodology.
Career outlook detail — projected 2032 employment levels for septic tank servicers, typical entry-level requirements, on-the-job training expectations — comes from the BLS Occupational Outlook Handbook at bls.gov/ooh. Apprenticeship programs in Seattle are listed at apprenticeship.gov. All three are public-domain federal data sources.
Frequently Asked Questions
What does a Septic Tank Servicer make in Seattle?
Per 2024 BLS Occupational Employment and Wage Statistics data, the median septic tank servicer salary in Seattle, WA is $62,830. The 10th percentile is $49,110 (typical for entry-level or apprentice-tier positions); the 90th percentile reaches $85,590 (master, foreman, or specialty roles).
How does Seattle pay compare for Septic Tank Servicers?
With a Trade Pay Score of 40/100 and a grade of D, the Seattle-Septic Tank Servicer pairing is below average — workers should consider whether a different metro for the same trade might deliver a higher grade.
What is the apprenticeship path for Septic Tank Servicers in Seattle?
Septic Tank Servicers typically complete a 1-year registered apprenticeship before reaching journeyman pay, starting around the 10th percentile ($49,110) and progressing toward the median. Registered apprenticeship programs in the area are listed at https://www.apprenticeship.gov/.
How does cost of living affect Septic Tank Servicer pay in Seattle?
Seattle has a cost-of-living index of 149. The median septic tank servicer salary of $62,830 translates to $42,168 in U.S.-average purchasing power — a downward adjustment because the metro is more expensive than average.
Where does this salary data come from?
Every wage figure on this page is a real BLS Occupational Employment and Wage Statistics median or percentile from the 2024 release at https://www.bls.gov/oes/, which surveys roughly 1.2 million U.S. employers per release. Career outlook context (projected employment growth through 2032) comes from the BLS Occupational Outlook Handbook at https://www.bls.gov/ooh/. Both are public-domain U.S. government data sources.
Septic Tank Servicers in Seattle, WA earn a median annual wage of $62,830 per 2024 BLS OEWS data, with the 10th percentile at $49,110 and the 90th at $85,590. After cost of living, that translates to $42,168 in U.S.-average purchasing power. Trade Pay Score: D (40/100).
this entity is one of the data points covered by this site’s U.S. skilled-trade wage data dataset. The detail above comes directly from the BLS Occupational Employment and Wage Statistics (OEWS) survey; the context that follows situates the headline numbers against the broader distribution across U.S. trades, cities, and states.
The methodology behind every numeric value on this page is publicly documented on the the BLS Occupational Employment and Wage Statistics (OEWS) survey portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. trades, cities, and states with similar size, similar exposure, or similar geography — not the national-level summary alone.