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Mandurah, Western Australia · October 2026 figures

Best drainage & septic specialists in Mandurah, WA

The top-ranked drainage & septic specialists in Mandurah are Waroona Septics (5.0 from 35 reviews), DIY Soakwells (4.9 from 35 reviews) and Saggers Group (4.8 from 35 reviews). 4 are ranked here by proven rating.

Ranked
4
Median rating
5.0
Reviews behind the list
125
Open Saturday
4 of 4

How the ranking works

The ranked list

  1. Rank 1.

    Waroona Septics

    Greenfields · Septic system service

    5.0 35 reviews Proven 4.64

    Open 7 daysOpens early

    0419 244 361Website
  2. Rank 2.

    DIY Soakwells

    Mandurah · Drainage service

    4.9 35 reviews Proven 4.57

    Open SaturdayOpens early

    (08) 6406 2112Website
  3. Rank 3.

    Saggers Group

    Mandurah · Septic system service

    4.8 35 reviews Proven 4.51

    Open 7 daysOpen lateOpens early

    (08) 6119 3717Website
  4. Rank 4.

    Swell Soakwells & Maintenance Plumbing

    Secret Harbour · Drainage service

    5.0 20 reviews Proven 4.50

    Open 24/7

    0479 034 296Website

Drainage & Septic Specialists in Mandurah at a glance

  • 4 drainage & septic specialists in Mandurah are ranked here, with 125 Google reviews between them and a median rating of 5.0.
  • 100% list a website and 100% a phone number on Google.
  • 4 of the 4 that list opening hours open on Saturday, and 3 on Sunday.
  • 1 lists round-the-clock hours, every day of the week: Swell Soakwells & Maintenance Plumbing.
  • Waroona Septics in Greenfields has the most Google reviews (35), averaging 5.0.

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Questions

Who are the best drainage & septic specialists in Mandurah?

The top-ranked drainage & septic specialists in Mandurah are Waroona Septics (5.0 from 35 reviews), DIY Soakwells (4.9 from 35 reviews) and Saggers Group (4.8 from 35 reviews). Each is ranked by proven rating, its Google rating weighted by the number of reviews behind it.

How many drainage & septic specialists are there in Mandurah?

The Agentize Directory ranks 4 drainage & septic specialists in Mandurah, each with a Google rating from at least five reviews. Their median rating is 5.0, from 125 reviews in all.

Which drainage & septic specialists in Mandurah are open on weekends?

3 of the 4 that list hours on Google open on both Saturday and Sunday. The highest ranked of them are Waroona Septics, Saggers Group and Swell Soakwells & Maintenance Plumbing.

Which drainage & septic specialists in Mandurah are open 24 hours?

Swell Soakwells & Maintenance Plumbing list round-the-clock hours every day on Google. Call ahead to confirm.

Which drainage specialist in Mandurah has the most reviews?

Waroona Septics has the most Google reviews of any drainage specialist ranked in Mandurah: 35, averaging 5.0.

How is this list of drainage & septic specialists ranked?

Every list is ranked by proven rating: a business's Google rating weighted by the reviews behind it, so a perfect score from five reviews cannot outrank a near-perfect one from five hundred. No business pays to be listed or to move up. How the ranking works.

More in Mandurah

Drainage & Septic Specialists elsewhere

Ratings and review counts are Google's, as listed in October 2026. Phone numbers, websites and opening hours are the ones each business lists on Google. No business pays to be listed or to move up, and none is verified or endorsed by Agentize. How the ranking works.