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    Help Me Choose

    Help Me Choose the Right Composting Toilet or Greywater System

    Not sure which system is right for your project? Start here. This form helps WCTNZ® understand your site, expected use, wastewater needs, and the type of outcome you are looking for.

    Composting toilets and greywater systems are not one-size-fits-all products. The right system depends on how the site will be used, how many people will use it, whether the use is full-time or part-time, what building type is involved, what services are available, and whether council, engineer, or wastewater design input may be required.

    What this form helps us understand

    The more useful detail you provide, the better we can narrow the options and recommend a practical next step.

    • your project — where the system will be used and what type of building or site it relates to
    • your usage — how many people will use the system and whether use is full-time, part-time, seasonal, or occasional
    • your pathway — whether you need a composting toilet, greywater system, combined package, quote, or technical discussion
    Project Direction

    Choosing the right system is a project decision

    It is easy to start by comparing products, prices, and user ratings. However, for wastewater and composting toilet systems, the better starting point is the project itself. A system that works well in one setting may not be the right fit somewhere else.

    This form helps us understand the project before recommending a direction. In some cases, the answer may be a simple system. In other cases, a more complete package, site-specific design, or staged approach may be more appropriate.

    Composting Toilets Suitable for waterless toilet projects, off-grid buildings, tiny homes, baches, rural sites, public facilities, and projects where blackwater needs to be reduced or managed differently.
    Greywater Systems Useful where showers, basins, laundries, kitchens, or other non-toilet wastewater streams need a suitable reuse, diversion, treatment, or discharge pathway.
    System Packages Some projects need more than one product. We may need to consider the toilet system, ventilation, drainage, greywater, consumables, spare parts, and support pathway together.
    Before You Start

    Details that help us make a stronger recommendation

    You do not need to have every answer ready. However, the following details help us understand the project and avoid recommending something that does not fit the site or expected use.

    Project type
    Home, bach, tiny house, RV, cabin, commercial site, public facility, farm, accommodation, or other use.
    Expected usage
    How many people will use the system, and whether use is full-time, part-time, seasonal, peak-use, or occasional.
    Site location
    Your town, region, council area, and whether the site is urban, rural, coastal, remote, or difficult to access.
    Building stage
    Planning, consent, construction, renovation, replacement, urgent repair, or early product research.
    Services available
    Power, water, existing septic, sewer connection, greywater field, drainage, ventilation path, or access limitations.
    Outcome wanted
    Product recommendation, quote, system package, council pathway support, or a more technical discussion.

    Why we ask for detail:

    A composting toilet or greywater system can perform very well when it is correctly matched to the site and usage pattern. Problems often happen when a system is chosen only by price, appearance, or a rough user number without considering the full installation and operating context.

    Our role is to help narrow the options before you commit to a system, so the product, site, and expected use make practical sense together.

    Start Here

    Complete the Help Me Choose Form

    Please fill in the form below. Once submitted, WCTNZ® will review your information and identify the most suitable next step. We may recommend a product pathway, ask for more detail, suggest a system package, or advise where professional design input may be needed.

    If the form does not load correctly, open the Help Me Choose Form in a new window .

    What happens after you submit?

    1
    We review your project
    We look at the site type, usage level, wastewater needs, and any practical limitations you have provided.
    2
    We identify the likely pathway
    This may be a composting toilet, greywater system, combined package, or a more technical design discussion.
    3
    We recommend the next step
    Where suitable, we can point you toward product options, quoting, supporting information, or professional design input.

    Important note: This form helps WCTNZ® provide product and system guidance. It does not replace a site-specific wastewater design, council approval process, building consent requirement, engineering report, or professional assessment where those are required for your project.

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    Call Us On

    0800 022 0270980 213 17

    Email Us At

    sales@wctnz.co.nzsupport@wctnz.co.nz
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    All prices are entered excluding tax. Excluding shipping