63/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 835 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Newcastle, WA (2026)
157 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Newcastle: Zoom Drain of Seattle, CR Score 63/100; 5.0★ from 835 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): A Advanced Septic & Construction Services, posts 24/7 hours; ranked #2 of 157.
- 12
Most-reviewed: Gene Johnson Plumbing, 4,041 Google reviews at 4.8★, the most of 157 ranked; ranked #12.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
157 Newcastle septic service companies are ranked here by CR Score, from ten published factors. 81 are open 24/7, 122 open Saturdays and 105 open Sundays, based on posted hours. The median Google rating is 4.9★ across 157 rated businesses.
Top 10 septic service companies in Newcastle at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Zoom Drain of Seattle | 63 | 5.0★ (835) | Seattle, 15 mi away | 24/7 | Overall |
| 2 | A Advanced Septic & Construction Services | 63 | 4.8★ (2,933) | Auburn, 18 mi away | 24/7 | Emergencies |
| 3 | Fresh N Clean Septic | 62 | 4.9★ (663) | Woodinville, 16 mi away | 24/7 | — |
| 4 | Puget Sound Septic | 61 | 5.0★ (413) | Maple Valley, 12 mi away | Sat · Sun · Evenings | — |
| 5 | American Rooter Sewer & Drain Service LLC | 60 | 5.0★ (316) | Bellevue, 4 mi away | 24/7 | — |
| 6 | Washington Rooter Sewer & Drain Service LLC | 59 | 5.0★ (310) | Bellevue, 6 mi away | 24/7 | — |
| 7 | A Wesco Septic Services | 59 | 4.8★ (550) | Snohomish, 21 mi away | 24/7 | — |
| 8 | 2 Sons Plumbing, Sewer, Septic, Electric, Heating & Air | 59 | 4.9★ (3,532) | Seattle, 14 mi away | Sat · Sun · Evenings | — |
| 9 | Mr. Rooter Plumbing of Seattle | 59 | 4.8★ (2,646) | Seattle, 8 mi away | 24/7 | — |
| 10 | Bob Oates Sewer & Rooter | 58 | 4.7★ (716) | Seattle, 12 mi away | 24/7 | — |
The 157 best septic service companies in Newcastle, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Auburn, 18 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.8★ from 2,933 Google reviews, listed on Google as “Septic system service”.
Based in Woodinville, 16 mi away
62/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 663 Google reviews, listed on Google as “Septic system service”.
Based in Maple Valley, 12 mi away
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 413 Google reviews, listed on Google as “Septic system service”.
Based in Bellevue, 4 mi away
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 316 Google reviews, listed on Google as “Plumber”.
Based in Bellevue, 6 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 310 Google reviews, listed on Google as “Plumber”.
Based in Snohomish, 21 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.8★ from 550 Google reviews, listed on Google as “Septic system service”.
Based in Seattle, 14 mi away
59/100CR ScoreRanked #8 because of its Google rating and review volume: 4.9★ from 3,532 Google reviews.
Based in Seattle, 8 mi away
59/100CR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 2,646 Google reviews.
Based in Seattle, 12 mi away
58/100CR ScoreRanked #10 because of its Google rating and review volume: 4.7★ from 716 Google reviews.
Based in SeaTac, 11 mi away
58/100CR ScoreRanked #11 because of its Google rating and review volume: 4.8★ from 2,264 Google reviews.
Based in Seattle, 15 mi away
58/100CR ScoreRanked #12 because of its Google rating and review volume: 4.8★ from 4,041 Google reviews, the most in Newcastle.
Based in Tukwila, 7 mi away
58/100CR ScoreRanked #13 because of its Google rating and review volume: 4.8★ from 579 Google reviews.
Based in Kent, 11 mi away
58/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.6★ from 169 Google reviews, listed on Google as “Septic system service”.
#15 Septic Response
Based in Kirkland, 10 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 213 Google reviews, listed on Google as “Plumber”.
Based in Snohomish, 22 mi away
57/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.7★ from 229 Google reviews, listed on Google as “Septic system service”.
Based in Issaquah, 6 mi away
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 98 Google reviews, listed on Google as “Plumber”.
Based in Seattle, 13 mi away
57/100CR ScoreRanked #18 because of its Google rating and review volume: 4.8★ from 409 Google reviews.
Based in Kent, 8 mi away
57/100CR ScoreRanked #19 because of its Google rating and review volume: 4.7★ from 1,362 Google reviews.
Based in Seattle, 14 mi away
57/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 218 Google reviews, listed on Google as “Plumber”.
Based in Seattle, 5 mi away
57/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.6★ from 28 Google reviews, listed on Google as “Septic system service”.
Based in Lynnwood, 20 mi away
57/100CR ScoreRanked #22 because of its Google rating and review volume: 4.9★ from 781 Google reviews.
Based in Seattle, 9 mi away
57/100CR ScoreRanked #23 because of its Google rating and review volume: 4.5★ from 2,956 Google reviews.
Based in Kent, 12 mi away
57/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 145 Google reviews, listed on Google as “Plumber”.
Based in Kent, 12 mi away
57/100CR ScoreRanked #25 because of its Google rating and review volume: 4.9★ from 540 Google reviews.
Septic service companies ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 157 ranked septic service companies here; the rest are on their profiles.
Also serving Newcastle
20 more septic service companies within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Ace Sewer Line Repair Services | 9 mi | |
| Action On-Site Services Inc | 5.0★ (1) | 24 mi |
| Benson Hill Septic Tank Services | 3.0★ (2) | 17 mi |
| Clearline Sewer Repair | 5.0★ (1) | 22 mi |
| CLS Septics & Electrical | 5.0★ (1) | 15 mi |
| Cole Septic | 5.0★ (1) | 22 mi |
| E & R Septic & Landscaping | 5.0★ (1) | 25 mi |
| Earthwise Excavation | 5.0★ (1) | 19 mi |
| Evergreen Sanitation | 1.0★ (1) | 5 mi |
| Evergreen Sewer | 5.0★ (1) | 14 mi |
| Final Vision Inc | 5.0★ (2) | 25 mi |
| Gravity Sewer Repair | 9 mi | |
| I Need A Plumber Now and Sewer Services | 5.0★ (2) | 3 mi |
| Insight Septic Design | 5.0★ (2) | 6 mi |
| Joe the Pro Plumbing, Septic, Sewer, Heating & Air | 11 mi | |
| New Horizon Sewer Services | 3.0★ (2) | 25 mi |
| Raven Rooter Sewer & Drain Cleaning Tacoma | 4.0★ (1) | 24 mi |
| Seattle Septic Pros | 10 mi | |
| Sorrell Septic Design LLC | 5.0★ (2) | 5 mi |
| Wadleigh Water and Sewer | 5.0★ (2) | 13 mi |
How we ranked Newcastle septic service companies
We scored 157 Newcastle septic service companies on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 3, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Newcastle data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Septic service companies in Newcastle: frequently asked questions
Who is the best septic service company in Newcastle?
By CR Score, the highest-ranked septic service company in Newcastle, WA is Zoom Drain of Seattle with a CR Score of 63/100. It has 5.0★ from 835 Google reviews. It is open 24/7. A Advanced Septic & Construction Services (#2) and Fresh N Clean Septic (#3) follow. We ranked 157 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Newcastle?
ContractorsRanked ranks 157 septic service companies serving Newcastle, WA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Newcastle are open 24/7?
81 ranked septic service companies in Newcastle post 24/7 hours. The highest-ranked are Zoom Drain of Seattle (#1), A Advanced Septic & Construction Services (#2) and Fresh N Clean Septic (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Newcastle work on weekends?
122 of 157 ranked septic service companies post Saturday hours and 105 post Sunday hours. The highest-ranked open Saturdays are Zoom Drain of Seattle (#1), A Advanced Septic & Construction Services (#2) and Fresh N Clean Septic (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Newcastle septic service companies have?
The median Google rating among 157 rated septic service companies in Newcastle is 4.9★, with a median of 36 reviews. Gene Johnson Plumbing has the most, 4,041 reviews, and ranks #12. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank septic service companies?
Each septic service company gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do septic service companies outside Newcastle count in this ranking?
Yes, if they are within 25 mi of the Newcastle city center, our service radius for septic service companies. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can septic service companies pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Newcastle
- November 2026: CR Scores recalculated for 157 septic service companies serving Newcastle.
More septic service companies and Newcastle pages
Septic service companies near Newcastle
- Septic service companies in West Lake Sammamish, WA149 ranked
- Septic service companies in Mercer Island, WA163 ranked
- Septic service companies in East Renton Highlands, WA155 ranked
- Septic service companies in Renton, WA164 ranked
- Septic service companies in Bryn Mawr-Skyway, WA166 ranked
- Septic service companies in Bellevue, WA158 ranked
- Septic service companies in Issaquah, WA138 ranked
- Septic service companies in Fairwood, WA162 ranked
- Septic service companies in Tukwila, WA168 ranked
- Septic service companies in City of Sammamish, WA146 ranked
Other trades in Newcastle
- Roofers in Newcastle1167 ranked
- Plumbers in Newcastle654 ranked
- Electricians in Newcastle584 ranked
- HVAC contractors in Newcastle579 ranked
- General contractors in Newcastle1618 ranked
- Painters in Newcastle538 ranked
- Landscapers in Newcastle390 ranked
- Handymen in Newcastle198 ranked
- Kitchen remodelers in Newcastle793 ranked
- Bathroom remodelers in Newcastle783 ranked
- Flooring contractors in Newcastle512 ranked
- Tile installers in Newcastle166 ranked
- Drywall contractors in Newcastle41 ranked
- Concrete contractors in Newcastle335 ranked
- Fence contractors in Newcastle310 ranked
- Deck builders in Newcastle476 ranked
- Siding contractors in Newcastle367 ranked
- Window installers in Newcastle385 ranked
- Gutter installers in Newcastle447 ranked
- Insulation contractors in Newcastle173 ranked
- Solar installers in Newcastle72 ranked
- Garage door repair companies in Newcastle256 ranked
- Foundation repair companies in Newcastle136 ranked
- Tree services in Newcastle319 ranked
- Masonry contractors in Newcastle211 ranked
- Water damage restoration companies in Newcastle511 ranked
- Home builders in Newcastle626 ranked
- Demolition contractors in Newcastle121 ranked
- Window cleaners in Newcastle162 ranked
- Pressure washing companies in Newcastle245 ranked
- Pest control companies in Newcastle174 ranked
- Paving contractors in Newcastle208 ranked
- Auto glass repair shops in Newcastle174 ranked
- Excavating contractors in Newcastle190 ranked
- Pool builders in Newcastle50 ranked
- All contractors in Newcastle