Resources · Blog
Operating notes, technical deep-dives, and customer wins — written by the engineers who build, deploy and service Purus systems.
49% of Australian rainwater tanks test positive for E. coli, and the data behind that number is consistent with 25 years of Australian research. We walk through what's actually in the typical tank, why conventional UV/chlorine/sand treatment doesn't fully fix it, and what an ADWG-compliant supply costs to put on the tank pad.
Read article →The Evolve Group install in detail: how bacterial fouling collapsed head pressure, what changed in week one, and what the operating numbers look like 12 months on. With the maths for assessing whether the same architecture will work on your chiller circuit.
Read article →The break-even maths for installing a Purus stage upstream of an existing RO train. Membrane life extension, fouling-pressure differential reduction, OPEX savings — modelled across 10-year horizons with the CS Energy install as the validated reference.
Read article →Why operating pressure is the variable that makes or breaks an off-grid water supply. We walk through the power-budget for a typical regional rainwater install — solar array sizing, daily duty profile, and where Purus sits versus conventional UF on inverter and battery requirements.
Read article →How Terella turned a $25k/month waste-water shipping bill into a livestock-grade water source. With sample data across three independent passes and a discussion of where similar economics carry to dairies, distilleries, and other small-batch food processors.
Read article →The water-credit checklist most architects and Green Star assessors miss, and how dynamic membrane fits without penalising the building's overall energy score. With reference to the Pixel Building and other six-star Australian commercial benchmarks.
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