Drainage & Water Management

Smart, sustainable water solutions — engineered to flow right and protect what's downstream.

From stormwater networks to sewer reticulation and WSUD-aligned treatments, we design and deliver drainage systems that protect urban environments, meet council standards, and perform for years to come.

Service Highlights

We deliver tailored road and pavement solutions that meet local council standards, enhance infrastructure longevity, and ensure safe, accessible environments for communities. From asphalt resurfacing to subgrade reinforcement and trench reinstatement, our expert team ensures quality and compliance at every stage.

Stormwater Drainage Networks

Installation of RCP/HDPE pipelines and pits, built to AUS-SPEC and WSUD guidelines for efficient runoff management.

Sewer Reticulation & Mains

We construct gravity mains and manholes for subdivisions and upgrades, with careful grade and flow calculations.

Trenchless Pipe Rehabilitation

CIPP lining and no-dig relining services for aging underground infrastructure with minimal surface disruption.

Stormwater Pits (Precast & In-situ)

Custom pit construction for new developments or drainage upgrades, ensuring capacity and flow accuracy.

Roofwater Connections & LPOD Works

Legal point of discharge (LPOD) works, kerb adapters, and small-scale GPTs that control and clean stormwater at the lot level.

Pedestrian-Friendly Grates

Safe, non-slip, bicycle-safe grates installed per active transport and Council access guidelines.

Gross Pollutant Traps (GPTs)

Installation of GPTs for improved stormwater quality — reducing pollutants and aligning with Council and WSUD targets.

Protecting Infrastructure, Enhancing Environments

Water infrastructure is often unseen — but it’s critical. At Sivil Co., we specialise in installing and upgrading stormwater and sewer systems that ensure long-term resilience, flood mitigation, and regulatory compliance. Whether it’s a new subdivision, a public road upgrade, or trenchless rehabilitation of aging mains, our drainage solutions are designed with care, built with precision, and aligned with Council WSUD, AUS-SPEC, and environmental performance standards.

Built to Code. Delivered with Precision.

We work to Council DCPs, WSUD policies, and AUS-SPEC specs to ensure your project is built for long-term function, environmental benefit, and regulatory sign-off. Our documentation, inspections, and safety protocols are aligned at every phase — from stormwater pit design to GPT handover.

Council-aligned WSUD & AUS-SPEC installations

Safe trenching and backfill practices

WHS and confined space compliance

GPT and LPOD install standards

Accurate flow grades and invert levels

CCTV & QA documentation provided

Why it matters?

Well-managed water systems are the foundation of safe, sustainable communities. From reducing flood risk to protecting waterways, smart drainage infrastructure improves quality of life and environmental outcomes.

Flood Risk Mitigation

Properly designed networks prevent pooling, protect assets, and reduce maintenance costs during heavy rainfall.

Water-Sensitive Urban Design (WSUD)

We align with Council strategies to manage runoff sustainably — capturing pollutants and enhancing urban ecology.

Trenchless Rehab, Minimal Disruption

CIPP and no-dig solutions restore pipe functionality without damaging surrounding infrastructure or roads.

Built to Code, Backed by Council

All works are delivered under AUS-SPEC, DCPs, and WSUD principles — with full documentation and approval pathways.

Our Process

From pit to pipe, our drainage works follow a clear and proven process. We coordinate planning, excavation, installation, and compliance to deliver functional water systems that perform now — and well into the future.

Step 1

Assessment & Service Detection

Survey, locate existing services, and assess stormwater flow paths

Step 2

Planning & Approvals

Liaise with Council for permits, WSUD integration, and technical drawings

Step 3

Excavation & Trenching

Safe, planned trenching with shoring and depth monitoring

Step 4

Pipe/Pit Installation

Set levels, connect components, seal systems

Step 5

Compliance & QA

CCTV, backfill compaction, QA checklist, and site cleanup

Let’s Build Something That Lasts

Water moves fast — so should your drainage strategy. At Sivil Co., we help councils, developers, and builders deliver smart water infrastructure that works. Let’s make your next system compliant, clean, and built to last.

Frequently Asked Questions (FAQs)

Our team is committed to delivering high-quality, compliant, and long-lasting road and pavement solutions. Below, we’ve addressed frequently asked questions to give you clarity on our process, standards, and what to expect from working with us.

1. Do you install GPTs and roofwater LPODs?

Yes — we handle both minor and major GPT installations, LPOD kerb adapters, and stormwater quality devices as per WSUD guidelines.

2. Can you reline sewer or stormwater pipes?

Absolutely. Our trenchless services include CIPP pipe relining and patching for aging sewer or drainage assets.

3. What standards do your drainage works comply with?

We follow AUS-SPEC, Council WSUD policies, and DCP drainage provisions. All installations are fully documented.

4. Do you provide CCTV and QA reporting?

Yes — all pipe installations and relining works include QA documentation, video inspection (CCTV), and level checks.