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Mandurah, Western Australia · October 2026 figures

Best drainage & septic specialists in Mandurah, WA

The highest-ranked drainage & septic specialists in Mandurah, WA are Waroona Septics (5.0 from 35 reviews), Swell Soakwells & Maintenance Plumbing (5.0 from 20 reviews) and DIY Soakwells (4.9 from 35 reviews). 4 are ranked here by rating floor.

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

Compare the top 4 How the ranking works

The ranked list

  1. 1

    Waroona Septics

    Greenfields · Septic system service

    5.0 from 35 reviews Floor 4.72

    Open 7 daysOpens early

    0419 244 361Website
  2. 2

    Swell Soakwells & Maintenance Plumbing

    Secret Harbour · Drainage service

    5.0 from 20 reviews Floor 4.63

    Open 24/7

    0479 034 296Website
  3. 3

    DIY Soakwells

    Mandurah · Drainage service

    4.9 from 35 reviews Floor 4.62

    Open SaturdayOpens early

    (08) 6406 2112Website
  4. 4

    Saggers Group

    Mandurah · Septic system service

    4.8 from 35 reviews Floor 4.52

    Open 7 daysOpen lateOpens early

    (08) 6119 3717Website

More in Mandurah

Drainage & Septic Specialists elsewhere in Western Australia

Ratings and review counts are Google's, as listed in October 2026. Phone numbers, websites and opening hours are the ones each business lists. Nothing here is paid for or verified by Calso. How the ranking works.