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Best Septic Service Companies in Bonney Lake, WA (2026)

110 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Bonney Lake: A Advanced Septic & Construction Services, CR Score 64/100; 4.8★ from 2,933 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): FloHawks Plumbing and Septic, posts 24/7 hours; ranked #2 of 110.

  3. 2

    Most-reviewed: FloHawks Plumbing and Septic, 5,286 Google reviews at 4.9★, the most of 110 ranked; ranked #2.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

110 Bonney Lake septic service companies are ranked here by CR Score, from ten published factors. 41 are open 24/7, 71 open Saturdays and 60 open Sundays, based on posted hours. The median Google rating is 4.8★ across 110 rated businesses.

Top 10 septic service companies in Bonney Lake at a glance

Top 10 septic service companies in Bonney Lake at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1A Advanced Septic & Construction Services644.8★ (2,933)Auburn, 9 mi away24/7Overall
2FloHawks Plumbing and Septic634.9★ (5,286)Puyallup, 7 mi away24/7Emergencies, Most reviews
3Sterling Septic & Plumbing LLC634.9★ (503)Puyallup, 8 mi away24/7—
4Drain-Pro Inc. - Washington624.7★ (218)Puyallup, 4 mi away24/7—
5Flow-Rite Septic Solutions605.0★ (41)Puyallup, 5 mi away24/7—
6Puget Sound Septic605.0★ (413)Maple Valley, 15 mi awaySat · Sun · Evenings—
7Bosco Septic & Sewer LLC595.0★ (24)Bonney LakeSat · Sun · Evenings—
8Aloha Septic Service/Town & Country Inc.584.8★ (155)Spanaway, 10 mi awaySat · Sun—
92 Sons Plumbing, Sewer, Heating & Air584.8★ (337)Pacific, 7 mi away24/7—
10FloHawks Plumbing and Septic584.8★ (230)Pacific, 6 mi away24/7—

The 110 best septic service companies in Bonney Lake, 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.

  1. Based in Maple Valley, 15 mi away

    60/100CR Score

    Ranked #6 because of its Google rating and trade focus: 5.0★ from 413 Google reviews, listed on Google as “Septic system service”.

    • 5.0★ from 413 Google reviews
    Hours
    Mon–Fri 9 AM–10:30 PM · Sat 9 AM–6 PM · Sun 11 AM–9 PM
    Address
    20222 SE 245th St, Maple Valley, WA 98038
  2. Based in South Hill, 10 mi away

    57/100CR Score

    Ranked #11 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Septic system service”.

    • 5.0★ from 21 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
  3. Based in Maple Valley, 15 mi away

    55/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.9★ from 288 Google reviews, listed on Google as “Septic system service”.

    • 4.9★ from 288 Google reviews
    Hours
    Mon–Fri 9 AM–4 PM · Sat–Sun closed
    Address
    26207 Maple Valley Black Diamond Rd SE Ste D1, Maple Valley, WA 98038

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 110 ranked septic service companies here; the rest are on their profiles.

septic service companies in Bonney Lake, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Zoom Drain555.0★ (132)9 mi
27Mr. Rooter Plumbing of Seattle554.8★ (2,646)23 mi
28Upfront Septic & Plumbing545.0★ (46)13 mi
29Beacon Plumbing, Heating, Electrical & Mechanical Inc - Kent544.7★ (1,362)18 mi
30Alpha Bravo Septic And Drainage, Inc544.9★ (15)15 mi
31All Septic & Sewer544.9★ (51)9 mi
32Brewer's Sewer Repair545.0★ (47)15 mi
33Drain Beast - Kent544.9★ (208)14 mi
34Top Plumbing & Sewer Drain Cleaning545.0★ (8)5 mi
35Aqualine Plumbing & Sewer544.8★ (579)22 mi
36North Hill Sewer and Drain534.9★ (76)18 mi
37HSCC1 & Services Inc.534.6★ (19)3 mi
38Spark Drain & Sewer535.0★ (9)7 mi
39Attili Design & Engineering. Inc. P.S.534.4★ (37)6 mi
40Sewer Inspector535.0★ (184)23 mi
41Riser Plumbing and Drain535.0★ (75)1 mi
42Neighbors Septic Service524.6★ (28)22 mi
43Frontier All Septic Services524.0★ (7)9 mi
44Bumblebee Services Inc.524.7★ (50)8 mi
45FloHawks Plumbing and Septic524.6★ (262)25 mi
46Lee's Sanitation Services524.5★ (25)7 mi
47King County Sewer Drain and Plumbing524.9★ (38)20 mi
48Skinner Construction, Inc - Septic Construction Services525.0★ (45)17 mi
49Westside Septic Design LLC524.7★ (13)8 mi
50Jamie's Septic Services524.4★ (7)13 mi

Also serving Bonney Lake

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.

How we ranked Bonney Lake septic service companies

We scored 110 Bonney Lake 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Bonney Lake data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Septic service companies in Bonney Lake: frequently asked questions

Who is the best septic service company in Bonney Lake?

By CR Score, the highest-ranked septic service company in Bonney Lake, WA is A Advanced Septic & Construction Services with a CR Score of 64/100. It has 4.8★ from 2,933 Google reviews. It is open 24/7. FloHawks Plumbing and Septic (#2) and Sterling Septic & Plumbing LLC (#3) follow. We ranked 110 septic service companies on ten factors, last updated November 3, 2026.

How many septic service companies are there in Bonney Lake?

ContractorsRanked ranks 110 septic service companies serving Bonney Lake, WA. 1 of them is based in Bonney Lake; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.

Which septic service companies in Bonney Lake are open 24/7?

41 ranked septic service companies in Bonney Lake post 24/7 hours. The highest-ranked are A Advanced Septic & Construction Services (#1), FloHawks Plumbing and Septic (#2) and Sterling Septic & Plumbing LLC (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.

Which septic service companies in Bonney Lake work on weekends?

71 of 110 ranked septic service companies post Saturday hours and 60 post Sunday hours. The highest-ranked open Saturdays are A Advanced Septic & Construction Services (#1), FloHawks Plumbing and Septic (#2) and Sterling Septic & Plumbing LLC (#3). Posted hours are office hours; crews may book weekend jobs separately.

What Google rating do Bonney Lake septic service companies have?

The median Google rating among 110 rated septic service companies in Bonney Lake is 4.8★, with a median of 28 reviews. FloHawks Plumbing and Septic has the most, 5,286 reviews, and ranks #2. 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 Bonney Lake count in this ranking?

Yes, if they are within 25 mi of the Bonney Lake 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 Bonney Lake

  1. November 2026: CR Scores recalculated for 110 septic service companies serving Bonney Lake.

More septic service companies and Bonney Lake pages

Other trades in Bonney Lake