Irrigation Performance Auditing
Know exactly how your system is performing.
Our irrigation audits give you a clear, evidence-based picture of system efficiency — identifying waste, diagnosing faults, and delivering a prioritised plan for improvement.
The case for auditing your irrigation
Most irrigation systems degrade over time. Heads shift, nozzles wear, pressure fluctuates, and schedules fall out of step with seasonal conditions. The result is uneven coverage, plant stress, and water waste — often invisible to the untrained eye.
A Zenith performance audit provides a rigorous, data-driven assessment of your system's current state. We measure distribution uniformity, application rates, and flow across every zone — then translate the findings into a clear, prioritised improvement report you can act on immediately.
How we conduct an audit
Pre-Audit Review
We review any existing design drawings, controller schedules, and maintenance records before arriving on site — ensuring our field work is targeted and efficient.
Catch-Can Testing
We place calibrated catch cans across each irrigation zone and run the system to measure actual application rates and distribution uniformity — the gold standard for audit accuracy.
Flow & Pressure Measurement
We measure static and dynamic pressure at key points throughout the system, and record flow rates at each zone valve — identifying pressure loss, leakage, and undersized pipework.
Fault Diagnosis & Reporting
All findings are compiled into a structured audit report with photographic evidence, zone-by-zone performance data, and a prioritised list of recommended actions ranked by impact and cost.
What an audit delivers
Quantified water savings
Audits routinely identify 20–40% water savings through scheduling corrections, nozzle upgrades, and pressure regulation — with a clear ROI on the audit investment.
Plant health protection
Uneven distribution causes dry spots and waterlogged areas. Correcting uniformity issues protects your planting investment and reduces replacement costs.
Regulatory compliance
Many water authorities and sustainability frameworks require documented evidence of irrigation efficiency. Our audit reports satisfy these requirements.
Prioritised action plan
Rather than a list of everything that could be improved, we rank recommendations by impact — so you can address the most significant issues first within your budget.
Baseline for future monitoring
An audit establishes a documented performance baseline. Repeat audits track improvement over time and demonstrate progress to stakeholders.
Independent, unbiased assessment
As an independent consultancy, our audit findings are objective. We have no interest in recommending unnecessary works — only what the data supports.
Collaborative Partner
A comprehensive audit — from the ground up.
For a truly thorough performance audit, we collaborate with Land Space — a landscape architecture and design firm — to assess not just the irrigation system, but the landscape it serves.
Their involvement covers a detailed assessment of the existing landscape: measuring plant health, identifying opportunities to introduce more native and drought-tolerant species, and surfacing any existing or unknown issues with the planting. This landscape-level insight allows our irrigation recommendations to be precisely calibrated to what the site actually needs — not just what the system is currently delivering.
The result is an audit that is both technically rigorous and ecologically informed — giving clients a clear, actionable picture of how to improve performance, reduce water consumption, and support a healthier, more resilient landscape.
Visit Land SpaceFind out what your system is really doing
Get in touch to arrange a performance audit. We'll assess your site and provide a clear picture of where your system stands — and what to do about it.