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What Locals Are Saying About Our Plumbing Services
Local Septic System Experts
If you live on acreage or outside the town sewer system, you’ll rely on a septic system for wastewater management. At MW Donnelly Plumbing, we specialise in septic tank installations, maintenance, repairs and pump-out coordination across Sunbury, Gisborne, Bacchus Marsh, Romsey, and other semi-rural suburbs.
Whether you’re building a new home, replacing a failed system, or need urgent repairs, Mark and his team provide licensed, reliable septic plumbing backed by experience and local knowledge.
We understand the soil, councils, and systems commonly used in our area — and we ensure your solution is tailored for longevity, compliance, and ease of maintenance.
Our Septic System Services Include:
- New septic system installations
- Septic tank replacements
- Pipework design & layout for drainage fields
- Septic inspections and troubleshooting
- Odour and overflow diagnosis
- Septic tank risers, lids, and baffle repairs
- Pump-out scheduling and preparation
- Soakwell and absorption trench support
- Pre-sale septic inspections
- Stormwater and greywater separation advice
Septic Solutions for Rural & Regional Properties
- Sunbury & Diggers Rest
- Gisborne, Gisborne South & New Gisborne
- Bacchus Marsh & Maddingley
- Riddells Creek & Romsey
- Woodend, Kyneton & Toolern Vale
- Wallan, Darley, and surrounds
New Septic System Installations
Building a new home off-grid or on acreage? We work with your builder or directly with you to:
- Design an efficient septic system based on your block and usage
- Ensure correct trenching, tank placement and drainage
- Install high-quality tanks, pipework, and access points
- Comply with council regulations and site requirements
- Coordinate inspections and handover
We’re happy to liaise with engineers or your council to ensure smooth approvals and fast turnarounds.
Septic Troubleshooting & Repairs
- Bad smells in or around the home
- Water pooling over the drainage area
- Slow-draining sinks and toilets
- Gurgling noises in pipes
- Tank overflows or blocked filters
Septic Tank Pump-Out Coordination
We don’t pump tanks ourselves, but we partner with local pump-out specialists to:
- Schedule your next service
- Prepare the tank (locating access points, lids etc.)
- Inspect the system before or after pump-out
- Advise on maintenance, water load, and household impact
Regular pump-outs every 3–5 years keep your system running safely — and we’re here to help you stay on top of it.
Education & Prevention
- What cleaners and products are safe
- How to maintain balance in your tank
- Protecting absorption trenches from overuse
- When to book your next inspection or service
How It Works
Step 1: Contact Our Team
Tell us about your property and your septic issue or installation needs.
Step 2: On-Site Assessment
We visit your property, inspect the system or site layout, and provide advice and a written quote.
Step 3: Repairs, Replacements or New Install
We carry out the work with attention to detail, safety, and compliance.
Step 4: Follow-Up Support
We remain available for maintenance, future upgrades, and ongoing advice.
Benefits
- Licensed, local, and septic system experienced
- Installations tailored to your land and lifestyle
- Septic inspections and council compliance knowledge
- Honest advice – we explain before we quote
- Long-term repair options that save you money
- Access to local pump-out partners
- Available for ongoing service and support
- Friendly, down-to-earth communication
Clients who trust us
- Homeowners on rural blocks needing full septic installs
- Families with failing tanks or overloaded systems
- Builders needing a reliable trade for septic trenching
- Real estate agents managing septic pre-sale inspections
- Elderly residents who need help understanding their system
- Hobby farmers needing overflow repairs or new lids
- Owner-builders managing projects outside sewered areas
