Australia
The absorption trench: how it's built, how long it must be, and the reserve area nobody mentions AS/NZS 1547 construction detail in millimetres, the full design loading rate table by soil category, setbacks from bores, dams and boundaries, and the 100% reserve area councils require. → AWTS explained: what an aerated system costs to buy, run and keep legal (Australia 2026) An AWTS is an appliance with a mandatory service contract, not a tank. Real install prices, the quarterly servicing law, measured electricity use, the desludging interval councils actually state, and what happens when the blower dies. → Composting toilet for a caravan in Australia: the two clauses that actually apply, where the waste can legally go, and the real capacity (2026) VSB1 clause 13.2.3 and NHVIM 15.1.l are written around a black water tank with chemicals in it. A composting toilet has neither. What the vehicle documents say word for word, what they are silent on, where the waste may legally end up, and the litres, uses and prices of the units sold here. → Composting toilets in Australia: what's accredited, what it costs, what it's like (2026) The composting toilets everyone reviews on YouTube are not on the NSW accredited register. What that means for a house versus a caravan, real 2026 prices, emptying intervals and the greywater rule nobody mentions. → Septic tank regulations NSW 2026: section 68 approvals, the approval to operate, council fees, penalties in the Act, and the April 2025 Guidelines that replaced the Silver Book What the Local Government Act 1993 and the Local Government (General) Regulation 2021 actually say about septic systems in NSW: section 68 Part C items 5 and 6, the eight performance standards of clause 44, the three-month grace for buyers in clause 47, renewal by invoice under section 107A, and the real penalties in penalty units (20 units, $2,200, for operating without approval; 1,000 units if you ignore a safety order). Plus published council fees and the Onsite Wastewater Management Guidelines of April 2025. → Grease trap cleaning: cost, frequency and trade waste rules (Australia 2026) What grease trap cleaning services charge by trap size and by the litre, how often your water authority actually requires the clean, how the trap is sized, and what non-compliance really costs. Independent — we don't clean traps. → How a septic tank actually works — and why the soil does most of the job (Australia) The tank removes only 25–35% of the organic load. What the three layers do, what the baffle and outlet filter are for, how the trench and its biomat treat the rest, and how AS/NZS 1547 sets the trench length. → Greywater diversion devices in Australia: what needs council approval, what it costs, and what nobody tells you The one distinction that decides whether your greywater system needs council approval in NSW, real prices from $30 to $20,000, the official maintenance schedule, and why most Australians only talk about grey water in the context of a caravan. → Selling a house with a septic tank in Australia: the approval that does not transfer, what the buyer's conveyancer asks in each state, and the council checklist that decides the price In NSW the approval to operate ends when «the property changes ownership» and the buyer has 3 months to run the system and 2 months to apply (clause 47). In Victoria the permit to install and the approval to use are council documents a buyer can search for a fee. In Queensland treatment plants must be serviced every three months with the report to council within 10 business days. In WA it is illegal to dismantle or empty a system without the local government's written permission. One council's buyer checklist, verbatim, and three real sales that went wrong. → Septic safe products: what the evidence says, and what the label doesn't (Australia) Toilet paper, laundry detergent, bleach and additives. What Australian councils actually require, what independent testing found about sodium, and which claims exist only on marketing pages. → Septic system inspection in Australia: what the council officer actually checks, what a pre-purchase inspection costs, and the audit that found a third of systems failing The council inspection checklist word for word, the risk bands that decide how often an officer comes, the 30-day and 90-day clock after a fail, official versus private inspection prices, and why a building and pest report tells you nothing about the tank. → Septic tank cost in Australia: what 27 owners actually paid, what 16 guides quote, and why the two don't match We read, one by one, what Australians said they paid for a septic system between 2007 and 2025: nine installed systems from $8,000 to $19,000, median $12,000; eleven pump-outs from $150 to $870; quotes for the same job that differed by two to one. Then we read 16 published price guides for the same four-bedroom system: they span $3,000 to $23,000. The only figures with a government's name on them are council fees, and we list them to the cent. → Installing a septic system in Australia: the eight steps, the two inspections, the paperwork What each stage produces and who signs it, who may lawfully install, the pre-backfill hold point, approval timeframes by state, and the installation mistakes that fail a system before it runs. → Septic tank problems: a diagnostic order, cheapest fix first (Australia) Slow drains, gurgling, backup, ponding, lush grass, odour — the causes ranked by what they cost to fix. Plus what heavy rain really does, the tank that floats if you pump it, and the roots you cannot cut out. → Septic tank pump out: cost, frequency and the rules (Australia 2026) What a septic pump-out really costs in Australia, how often your state requires one, who is legally allowed to do it and what the service report must say. Independent — we don't pump tanks. → When to replace a septic tank — and what it costs (Australia 2026) Lifespan by material, why concrete tanks rot from the crown down and not the floor up, the RMIT finding about pre-1980 Victorian tanks, decommissioning costs, and the renovation that forces a $24,000 upgrade. → Septic tank rip-offs: what Australia's real complaint data shows, and how to check before you pay Real 2026 figures from WA Consumer Protection show roughly a quarter of plumbing and liquid-waste enforcement actions involve unlicensed operators, and upselling thousands in unnecessary work is the top complaint. A real Whirlpool dispute over a $210 pump-out shows what happens when nobody can question the bill — and the free checks that fix it. → How to unclog a toilet without a plunger — and when it isn't the toilet at all (Australia) Hot water and dish soap, or a mop in a bag, clear most ordinary toilet-paper clogs without a plunger. A real Whirlpool forum thread shows what it means when none of that works — and why a septic system changes what's safe to pour down there. → Septic tank smell: what the location of the odour tells you (Australia) Rotten egg outside before rain, sewer gas in the bathroom, or a stink over the trench — three different faults with three different fixes. What the plumbing code requires, and when odour becomes a council matter. → What size septic tank do I need? The formula, the minimums, and why bedrooms decide it AS/NZS 1547 design flows, the bedrooms-plus-one rule, the capacity formula S + (DF × N), state minimums, and the sludge allowance that quietly sets your pump-out interval. → Worm farm wastewater systems in Australia: what's accredited, what they cost, and the servicing claim that isn't true Vermifiltration explained, the four systems on the NSW Health wet composting register, real effluent results, and why one accreditation certificate mandates quarterly servicing the marketing says you don't need. →
Local council · state EPA — Every install or replacement needs council approval, and AS/NZS 1547:2012 governs design. Pump-outs every 3–5 years are standard council practice — budget for them.