62/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 151 Google reviews, listed on Google as “Septic system service”.
Best Septic Service Companies in Oak Hills, OR (2026)
69 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Oak Hills: West Side Drain and Septic, CR Score 62/100; 4.9★ from 151 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): West Side Drain and Septic, posts 24/7 hours; ranked #2 of 69.
- 8
Most-reviewed: Henco Plumbing Services, 3,061 Google reviews at 4.9★, the most of 69 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
69 Oak Hills septic service companies are ranked here by CR Score, from ten published factors. 28 are open 24/7, 43 open Saturdays and 33 open Sundays, based on posted hours. The median Google rating is 4.9★ across 69 rated businesses.
Most of this list also appears on the Septic service companies in Aloha ranking. See Septic service companies in Aloha
Top 10 septic service companies in Oak Hills at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | West Side Drain and Septic | 62 | 4.9★ (151) | Hillsboro, 5 mi away | 24/7 | Overall |
| 2 | West Side Drain and Septic | 61 | 4.9★ (800) | Hillsboro, 7 mi away | 24/7 | Emergencies |
| 3 | Wild Pine Plumbing | 60 | 4.9★ (100) | Portland, 9 mi away | 24/7 | — |
| 4 | Insight Sanitary Services | 59 | 5.0★ (29) | Hillsboro, 9 mi away | 24/7 | — |
| 5 | Plumbing and Sewer Renewal Specialists | 59 | 5.0★ (539) | Portland, 8 mi away | Sat · Sun · Evenings | — |
| 6 | Lil' Stinky Septic Service | 59 | 4.8★ (252) | Canby, 21 mi away | 24/7 | — |
| 7 | Scout Septic, Grease & Drain | 59 | 4.9★ (341) | Portland, 25 mi away | 24/7 | — |
| 8 | Henco Plumbing Services | 57 | 4.9★ (3,061) | Ridgefield, 18 mi away | 24/7 | Most reviews |
| 9 | West Side Drain and Septic | 57 | 5.0★ (146) | Cornelius, 10 mi away | 24/7 | — |
| 10 | Alchemy Plumbing & Drain Cleaning | 57 | 4.9★ (861) | Lake Oswego, 11 mi away | 24/7 | — |
The 69 best septic service companies in Oak Hills, 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 Hillsboro, 7 mi away
61/100CR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 800 Google reviews.
Based in Portland, 9 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 100 Google reviews, listed on Google as “Septic system service”.
Based in Hillsboro, 9 mi away
59/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Septic system service”.
Based in Portland, 8 mi away
59/100CR ScoreRanked #5 because of its Google rating and review volume: 5.0★ from 539 Google reviews.
Based in Canby, 21 mi away
59/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 252 Google reviews, listed on Google as “Septic system service”.
Based in Portland, 25 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 341 Google reviews, listed on Google as “Septic system service”.
Based in Ridgefield, 18 mi away
57/100CR ScoreRanked #8 because of its Google rating and review volume: 4.9★ from 3,061 Google reviews, the most in Oak Hills.
Based in Cornelius, 10 mi away
57/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 146 Google reviews, listed on Google as “Plumber”.
Based in Lake Oswego, 11 mi away
57/100CR ScoreRanked #10 because of its Google rating and review volume: 4.9★ from 861 Google reviews.
Based in Tigard, 8 mi away
57/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 81 Google reviews, listed on Google as “Plumber”.
Based in Troutdale, 22 mi away
57/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 247 Google reviews, listed on Google as “Septic system service”.
Based in Vancouver, 13 mi away
56/100CR ScoreRanked #13 because of its Google rating and review volume: 4.5★ from 534 Google reviews.
Based in Battle Ground, 20 mi away
56/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Septic system service”.
Based in Vancouver, 14 mi away
56/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 74 Google reviews, listed on Google as “Septic system service”.
Based in Salem, 24 mi away
55/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 37 Google reviews, listed on Google as “Septic system service”.
#17 Pinkies Septic
Based in Oregon City, 18 mi away
55/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Septic system service”.
Based in Oregon City, 22 mi away
55/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 42 Google reviews, listed on Google as “Septic system service”.
Based in Tigard, 9 mi away
55/100CR ScoreRanked #19 because of its Google rating and review volume: 5.0★ from 403 Google reviews.
Based in Vancouver, 18 mi away
54/100CR ScoreRanked #20 because of its Google rating and review volume: 4.8★ from 548 Google reviews.
Based in Camas, 20 mi away
54/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 135 Google reviews, listed on Google as “Plumber”.
Based in Battle Ground, 22 mi away
54/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 141 Google reviews, listed on Google as “Plumber”.
Based in Hillsboro, 7 mi away
54/100CR ScoreRanked #23 because of its Google rating and review volume: 4.7★ from 85 Google reviews.
Based in Portland, 24 mi away
54/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.6★ from 22 Google reviews, listed on Google as “Septic system service”.
Based in Portland, 14 mi away
54/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Excavating contractor”.
How we ranked Oak Hills septic service companies
We scored 69 Oak Hills 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 Oak Hills 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 Oak Hills: frequently asked questions
Who is the best septic service company in Oak Hills?
By CR Score, the highest-ranked septic service company in Oak Hills, OR is West Side Drain and Septic with a CR Score of 62/100. It has 4.9★ from 151 Google reviews. It is open 24/7. West Side Drain and Septic (#2) and Wild Pine Plumbing (#3) follow. We ranked 69 septic service companies on ten factors, last updated November 3, 2026.
How many septic service companies are there in Oak Hills?
ContractorsRanked ranks 69 septic service companies serving Oak Hills, OR. Counts are as of November 2026.
Which septic service companies in Oak Hills are open 24/7?
28 ranked septic service companies in Oak Hills post 24/7 hours. The highest-ranked are West Side Drain and Septic (#1), West Side Drain and Septic (#2) and Wild Pine Plumbing (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which septic service companies in Oak Hills work on weekends?
43 of 69 ranked septic service companies post Saturday hours and 33 post Sunday hours. The highest-ranked open Saturdays are West Side Drain and Septic (#1), West Side Drain and Septic (#2) and Wild Pine Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Oak Hills septic service companies have?
The median Google rating among 69 rated septic service companies in Oak Hills is 4.9★, with a median of 41 reviews. Henco Plumbing Services has the most, 3,061 reviews, and ranks #8. 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 Oak Hills count in this ranking?
Yes, if they are within 25 mi of the Oak Hills 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 Oak Hills
- November 2026: CR Scores recalculated for 69 septic service companies serving Oak Hills.
- November 2026: 1 duplicate listing merged.
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