Last updated: 13 November 2026
This policy explains what personal information Tankful collects, why, who we share it with, and what your rights are. It applies to the Tankful website, web app and tank level monitors (together, the "service").
Tankful is operated by Techful Limited, a New Zealand company (NZBN 9429048987356), of 12 Kagan Ave, Mangawhai 0505. We follow the New Zealand Privacy Act 2020.
For anything about your privacy, email support@tankful.nz.
What we collect
When you register your interest
- Your name and email address.
When you create an account
- Your name, email address and time zone.
- Your password, which we store only in hashed form. We cannot read it.
- The date you accepted our terms.
- Your notification preferences.
When you set up a site
- The site's name, street address and map location.
- Who the site's members are and what role each has.
- The email addresses of people you invite to the site.
From your Tankful devices
- Tank level readings and the time they were taken.
- Battery level, firmware version and when the device last checked in.
- The tank dimensions and device location you enter.
- The IP address the device connects from.
Tank readings can show patterns such as when a property is occupied and how much water is being used. We treat them as personal information while they are linked to you or your site.
When you turn on push notifications
- A push subscription for your browser, which lets us send notifications to that device.
When you use the website and app
- Session and security cookies (see "Cookies" below).
- Anonymous visit statistics on our public pages.
- Technical details when something goes wrong, such as the error, the page, your IP address and, if you are signed in, which account was affected.
When you contact us
- Whatever you send us, and our replies.
We collect this information directly from you and your devices. If someone invites you to a site, we get your email address from them.
You can choose not to give us information, but we need most of it to provide the service. For example, we cannot send alerts without an email address.
How we use it
We use your information to:
- provide the service: show your tank levels, estimate usage, and send low-level and other alerts;
- manage your account, verify your email address and keep the service secure;
- pass on a refill request to a water supplier, when you ask us to;
- respond when you contact us;
- find and fix faults, and improve Tankful;
- send you occasional product updates and news about Tankful. Every one of these emails has an unsubscribe link, and you can also opt out by emailing us; and
- produce de-identified, aggregated statistics, such as typical water use by region. These cannot identify you or your property, and we may publish or share them.
We do not sell your personal information.
Who we share it with
Other members of your site. People who belong to the same site can see that site's details, devices and tank levels, and the names and email addresses of its other members.
Water suppliers, when you ask. If you ask us to arrange or request a refill, we share what the supplier needs to deliver: your name, contact details, the site address and how much water is needed. We only do this at your request.
Companies that help us run the service. They may only use your information to provide their service to us.
| Provider | What it does | What it receives | Where |
|---|---|---|---|
| Our hosting provider | Runs our servers and database | Everything we store | New Zealand |
| Postmark (ActiveCampaign) | Sends our emails | Your name, email address and the content of emails we send you | United States |
| Flare (Spatie) | Error tracking | Error details, which can include your IP address and account details | European Union |
| Esri and OpenStreetMap | Map imagery and address search in the app | Your IP address, the map areas you view and the addresses you search for | United States and European Union |
| Your browser's push service (such as Apple, Google or Mozilla) | Delivers push notifications | The content of the notification | Varies |
When the law requires it, or when it is needed to protect someone's safety or our legal rights.
If Tankful is sold or restructured, your information may be transferred to the new operator, who must keep to this policy.
Information sent overseas
Our servers and database are in New Zealand. Some of the providers listed above are overseas, so some of your information is sent to the United States and the European Union. We only use providers that we believe will protect your information in a way that is comparable to New Zealand's privacy law, or that are bound by contract to do so.
Cookies and analytics
- We use cookies that are needed for the service to work: to keep you signed in and to protect forms from misuse. We do not use advertising or tracking cookies.
- Our public pages use Rybbit, a privacy-friendly analytics tool that we host ourselves. It does not use cookies, does not track you across other websites, and gives us only anonymous statistics such as page views.
How we protect it
We take reasonable steps to keep your information safe, including encrypted connections, hashed passwords, access controls, and limiting access to the people who need it to run Tankful. No system is perfectly secure. If a privacy breach is likely to cause serious harm, we will tell you and the Privacy Commissioner.
How long we keep it
- We keep your account, site and device information for as long as your account is open.
- If you ask us to close your account, we delete your personal information within 30 days. Copies in backups are overwritten on our normal backup cycle.
- When we delete your account, we keep your tank readings in de-identified form, with your name, contact details, address and exact location removed, so we can keep improving Tankful.
- If you registered your interest but did not create an account, we keep your name and email address until you ask us to remove them or we no longer need them.
- We may keep some information for longer where the law requires it.
Your rights
Under the Privacy Act 2020 you can:
- ask for a copy of the personal information we hold about you;
- ask us to correct it if it is wrong; and
- ask us to delete your account.
You can update your name, email address and notification preferences yourself in the app. For anything else, email support@tankful.nz. We will respond within 20 working days.
If you are not happy with how we have handled your information, please tell us first so we can try to put it right. You can also complain to the Office of the Privacy Commissioner at privacy.org.nz.
Children
Tankful is not intended for children, and you must be at least 18 to create an account.
Changes to this policy
We may update this policy from time to time. If a change is significant, we will let you know by email before it takes effect. The date at the top of this page shows when it was last updated.
Contact
Techful Limited
12 Kagan Ave, Mangawhai 0505
support@tankful.nz