Project & Onsite Specialists

Local support, national coverage, global knowledge

Alto delivers specialist project services, chemical dosing systems, and onsite works for Australia's water and wastewater sector. From design and installation through to commissioning and ongoing support, our teams work directly with utilities, contractors, and site operators to deliver infrastructure that performs — safely, on programme, and to specification.

What we do

Our Services

Our Work

Selected projects

Coastal Wastewater Treatment Facility

Bondi, NSW

Ongoing onsite servicing at one of Sydney's largest coastal treatment facilities.

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Coastal Wastewater Treatment Facility

Manly, NSW

Specialist onsite works supporting continuous plant operation.

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Remote Site Project Delivery

Regional Australia

Project works in access-restricted locations reached by air and river crossing.

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Built on 20+ years 
of delivering results

Operating Nationwide

From metropolitan utilities to remote regional sites, Alto delivers projects across every state and territory, backed by local teams and responsive support.

Project-Focused Expertise

Projects are our core business — not a sideline. We scope, deliver, and commission works with the discipline that water infrastructure demands.

Proven Track Record

Our systems operate at government water utilities and major facilities across Australia, with direct client references available on request.

Quality-Certified Systems

Alto operates under certified management systems for quality, safety, and environment, so every project is delivered to a documented, auditable standard.

Testimonials

"Alto delivered the dosing system upgrade on a fully operational site without a single interruption to supply. Their onsite team knew exactly what they were doing."

Operations ManagerRegional Water Utility, NSW

“From scoping through to commissioning, everything was documented, on programme, and to spec. They're the first call for our chemical dosing work."

Project EngineerInfrastructure Contractor, QLD

"Their systems have passed every audit we've put them through. That reliability is why we keep coming back."

Treatment Plant SupervisorWater Authority, VIC

Industry Specialists

Water & Wastewater

Alto's home ground. We design, install, and maintain chemical dosing and treatment systems for water and wastewater utilities nationwide — from major metropolitan plants to remote community schemes.

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Oil & Gas

Specialist valves, dosing systems, and onsite works for processing and production facilities, delivered to the compliance and safety standards the sector demands.

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Industrial & Manufacturing

Process water, treatment, and dosing solutions for industrial sites — engineered for reliability, uptime, and integration with existing plant.

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Defence & Infrastructure

Proven delivery on secure and mission-critical sites, with the documentation, inductions, and quality systems required for government and defence work.

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Alto in numbers

20+ Years in business
956+ Projects completed
Turnkey EPC solution provider

Frequently Asked Questions

Does Alto supply equipment as well as deliver projects?

Yes. We supply specialist valves, fittings, and ancillary equipment from trusted manufacturers, specified to your project requirements. We can integrate supply into a broader project scope or fulfil standalone supply orders.

What certifications does Alto hold?

Alto operates under ISO-certified management systems covering quality, environmental management, and work health & safety. Certification documentation is available on request to support tender and prequalification requirements.

Can Alto work on live or operational sites?

Yes. Much of our work is delivered on live water and wastewater facilities. Our teams are experienced in working within operational constraints — including permits to work, site inductions, isolation procedures, and staged delivery — so projects proceed without interrupting supply or plant operation.

Where does Alto operate?

Alto operates Australia-wide, delivering projects in every state and territory from our base in Seven Hills, NSW. We regularly service metropolitan, regional, and remote sites.

What types of projects does Alto deliver?

We deliver chemical dosing systems, water treatment solutions, controls and automation, and onsite installation works — from new installations through to upgrades, replacements, and staged plant improvements. Projects range from single-system installs to multi-stage infrastructure programmes.

What industries does Alto service?

Our core focus is water and wastewater, working with utilities, councils, and their contractors. We also service oil & gas, industrial & manufacturing, and defence & infrastructure clients where specialist dosing, treatment, and onsite capability is required.

Can Alto provide references for previous work?

Yes. We can provide direct client references, including from government water utilities where our systems are in operation. Contact us and we'll arrange references relevant to your project type and industry.

How do I get a quote or start a project enquiry?

Use the project enquiry form on this page or call us on (02) 8887 8000. Tell us about your project scope, site, and timeframe, and we'll come back to you within one business day.