Managed Aquifer Recharge in Auckland CBD
Auckland depends on a supply that comes under real strain in dry years, and the 2020 drought put water security firmly back on the regional agenda. Managed aquifer recharge is one of the tools being looked at to firm up supply: water captured when it is plentiful, recharged into a suitable aquifer, stored underground and recovered when demand peaks. From our central Auckland base, LDE provides managed aquifer recharge and aquifer storage and recovery engineering across the region.
We cover the feasibility case, the source water and the aquifer assessment, then recharge trials, water-quality and clogging control, and the operation, monitoring and consents that follow. We help councils, utilities and large water users test whether MAR is viable for a given aquifer and source, then design and monitor schemes that perform. Working under the Auckland Unitary Plan, our team handles the takes, recharge and discharges in one framework.
For Auckland clients, that means a clear-eyed look at underground storage as part of a more resilient regional supply. Talk to our Auckland CBD water team about your next project.
How our Auckland CBD team delivers managed aquifer recharge
Auckland’s dry-year supply gap is what makes managed aquifer recharge worth investigating, and our central Auckland team approaches it as a feasibility question first. We look at the source water that could be captured, whether a suitable aquifer can accept and store it, the recovery efficiency that could be achieved and the water-quality controls needed to protect both the aquifer and the recovered supply. From there we design the recharge approach, a trial to prove it, and the monitoring that underpins ongoing operation.
It is the same managed aquifer recharge capability that underpins our regional water work, where supply resilience has become a clear priority.
- Feasibility and source-water assessment for regional supply resilience
- Aquifer suitability and recovery-efficiency assessment
- Recharge trials and aquifer storage and recovery (ASR) proving on suitable aquifers
- Water-quality, clogging and monitoring design to protect the aquifer
Water security and consenting in Auckland
A managed aquifer recharge scheme in the region is assessed under the Auckland Unitary Plan, administered by Auckland Council as a unitary authority, with the take, the recharge and any discharge handled together. Recharge water has to satisfy national freshwater policy, so we design to recognised guidance from the outset.
- Ministry for the Environment freshwater policy and the National Policy Statement for Freshwater Management
- Water New Zealand good-practice guidance for managed aquifer recharge
LDE managed aquifer recharge in Auckland
LDE brings managed aquifer recharge and aquifer storage and recovery expertise to a region where the 2020 drought sharpened the focus on supply resilience. Across Auckland, MAR is one of several options for storing water against dry years, and we help utilities and large users work through whether it fits a particular aquifer and source rather than assuming it will. The same capability supports our resources and water clients. You can see more of our regional water delivery on the projects page.
Common questions about managed aquifer recharge in Auckland
Why is managed aquifer recharge being considered for Auckland?
The region’s supply is stretched in dry years, as the 2020 drought showed, so storing water for those periods has value. Managed aquifer recharge banks water underground when it is plentiful and recovers it when it is short, which makes it one of the options worth assessing for regional resilience.
Is the Auckland geology suitable for MAR?
It depends entirely on the target aquifer, which is why feasibility comes first. We assess whether a given aquifer can accept recharge, store it and return it efficiently, and whether the stored water stays usable. The answer varies across the region, so each scheme is tested on its own ground.
Who carries out LDE’s managed aquifer recharge work in Auckland?
Chartered Professional Engineers from our Auckland team, drawing on LDE’s wider water and groundwater capability.
How do you protect the aquifer when recharging it?
Protecting the aquifer is central to the design. We match the source-water quality and any pre-treatment to the aquifer, set recharge rates that avoid clogging and pressure problems, and monitor water quality through the scheme. This keeps both the aquifer and the recovered supply safe and keeps the scheme consentable under the Auckland Unitary Plan.
