65/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Septic Service Companies in Ellensburg, WA (2026)
12 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Ellensburg: Central Washington Septic, CR Score 65/100; 5.0★ from 35 Google reviews; open 24/7.
- 5
Most-reviewed: Kitsap Septic, 136 Google reviews at 4.9★, the most of 12 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
12 Ellensburg septic service companies are ranked here by CR Score, from ten published factors. 1 is open 24/7, 3 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 5.0★ across 12 rated businesses.
Top 10 septic service companies in Ellensburg at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Central Washington Septic | 65 | 5.0★ (35) | Ellensburg | 24/7 | Overall |
| 2 | Basic Septic Design & Installation | 65 | 5.0★ (63) | Ellensburg | Sat · Sun | — |
| 3 | Smith Excavating Inc | 61 | 5.0★ (28) | Ellensburg | Sat · Evenings | — |
| 4 | Brown & Jackson Septic | 58 | 4.4★ (35) | Ellensburg | — | — |
| 5 | Kitsap Septic | 57 | 4.9★ (136) | Seattle, 25 mi away | — | Most reviews |
| 6 | Sunset Septic Tank Co Inc | 54 | 5.0★ (3) | Ellensburg | — | — |
| 7 | Sala's Drain & Sewer Cleaning | 53 | 4.6★ (16) | Ellensburg | — | — |
| 8 | Washington Wastewater Solutions, LLC. | 52 | 4.9★ (24) | Selah, 24 mi away | — | — |
| 9 | Economy Septic & Construction Inc. | 51 | 5.0★ (5) | Lacey, 25 mi away | — | — |
| 10 | Horizon Wastewater | 50 | 4.6★ (9) | Bremerton, 25 mi away | — | — |
The 12 best septic service companies in Ellensburg, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Ellensburg
65/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 63 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ellensburg
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ellensburg
58/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.4★ from 35 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Seattle, 25 mi away
57/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 136 Google reviews, the most in Ellensburg.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ellensburg
54/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ellensburg
53/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.6★ from 16 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Selah, 24 mi away
52/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 24 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lacey, 25 mi away
51/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Septic system service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Bremerton, 25 mi away
50/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Septic system service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ellensburg
48/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ellensburg
48/100CR ScoreRanked #12 because of its Google rating and trade focus: 3.8★ from 5 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Also serving Ellensburg
4 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 |
|---|---|---|
| All Around Underground Inc | 5.0★ (2) | In Ellensburg |
| Insight Septic Design | 5.0★ (2) | In Ellensburg |
| Septic Design & Maintenance | 5.0★ (1) | In Ellensburg |
| Sewer pros | 15 mi |
How we ranked Ellensburg septic service companies
We scored 12 Ellensburg 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 Ellensburg 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 Ellensburg: frequently asked questions
Who is the best septic service company in Ellensburg?
By CR Score, the highest-ranked septic service company in Ellensburg, WA is Central Washington Septic with a CR Score of 65/100. It has 5.0★ from 35 Google reviews. It is open 24/7. Basic Septic Design & Installation (#2) and Smith Excavating Inc (#3) follow. We ranked 12 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Ellensburg?
ContractorsRanked ranks 12 septic service companies serving Ellensburg, WA. 8 of them are based in Ellensburg; the rest serve it from nearby towns. Another 4 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which septic service companies in Ellensburg are open 24/7?
1 ranked septic service company in Ellensburg posts 24/7 hours. The highest-ranked is Central Washington Septic (#1). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Ellensburg work on weekends?
3 of 12 ranked septic service companies post Saturday hours and 2 post Sunday hours. The highest-ranked open Saturdays are Central Washington Septic (#1), Basic Septic Design & Installation (#2) and Smith Excavating Inc (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Ellensburg septic service companies have?
The median Google rating among 12 rated septic service companies in Ellensburg is 5.0★, with a median of 20 reviews. Kitsap Septic has the most, 136 reviews, and ranks #5. 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 Ellensburg count in this ranking?
Yes, if they are within 25 mi of the Ellensburg 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 Ellensburg
- November 2026: CR Scores recalculated for 12 septic service companies serving Ellensburg.
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