--- title: "Septic Tanks Grafton — Poly Tanks from $949 | Bush Billabongs" description: "Certified poly septic tanks delivered to Grafton and the Northern Rivers NSW. 1500L from $949, 2500L three-chamber. AS/NZS 1546.1." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Article", "mainEntityOfPage": { "@type": "WebPage", "@id": "https://bushbillabongs.com.au/septic-tanks-grafton" }, "headline": "Septic Tanks Grafton — Delivered Across the Northern Rivers", "description": "Polyethylene septic tanks delivered to Grafton and surrounding Northern Rivers NSW. 1500L from $949, 2500L three-chamber.", "author": { "@type": "Organization", "name": "Bush Billabongs" }, "publisher": { "@type": "Organization", "name": "Bush Billabongs", "logo": { "@type": "ImageObject", "url": "https://bushbillabongs.com.au/logo.png" } }, "datePublished": "2026-06-27", "dateModified": "2026-06-27", "image": "https://bushbillabongs.com.au/og-preview.jpg" }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Do you deliver septic tanks to Grafton?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We deliver 1500L and 2500L polyethylene septic tanks to Grafton and across Northern Rivers NSW. Lead time is typically 3–10 working days from order. Pickup from our depot is also available and is the cheapest option where it's practical for you." } }, { "@type": "Question", "name": "What size septic tank do I need in Grafton?", "acceptedAnswer": { "@type": "Answer", "text": "For most Grafton-area households, a 1500L tank covers a 2–4 person home. Larger households (4+ permanent occupants), farmhouses or homes with a second dwelling typically step up to a 2500L three-chamber tank. Where there's a separate granny flat or workers' cottage, a dedicated 1500L tank for that dwelling is usually simpler than oversizing one shared tank." } }, { "@type": "Question", "name": "Which council handles septic approvals in Grafton?", "acceptedAnswer": { "@type": "Answer", "text": "Clarence Valley Council processes on-site sewage management approvals for Grafton. Your licensed plumber lodges the Notice of Work before install and the Notice of Completion afterwards — that paperwork is part of every legitimate septic install, regardless of which tank brand you buy." } }, { "@type": "Question", "name": "How much does septic installation cost in Grafton?", "acceptedAnswer": { "@type": "Answer", "text": "All-in install in the Northern Rivers NSW region typically runs $5,500–$9,500 for a 1500L poly system (tank, sand bedding, excavation, plumber connections, absorption trench, council fees). Concrete equivalents typically add $2,000–$4,000 on top, mostly in freight and crane costs. See our full cost breakdown for a line-by-line picture." } }, { "@type": "Question", "name": "Can a septic tank be installed on a flood-affected block near the Clarence?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, with the right siting. The tank goes on the highest practical ground on the lot, anti-flotation collars are added during install, and access risers are extended above the expected flood level. Your licensed plumber confirms siting against the council's flood mapping before excavation begins." } } ] }, { "@context": "https://schema.org", "@type": "LocalBusiness", "@id": "https://bushbillabongs.com.au/septic-tanks-grafton", "name": "Bush Billabongs — Septic Tanks Grafton", "url": "https://bushbillabongs.com.au/septic-tanks-grafton", "image": "https://bushbillabongs.com.au/og-preview.jpg", "description": "Septic tank supplier delivering certified poly tanks to Grafton and the Northern Rivers NSW.", "areaServed": [ { "@type": "City", "name": "Grafton" }, { "@type": "City", "name": "South Grafton" }, { "@type": "City", "name": "Maclean" }, { "@type": "City", "name": "Yamba" }, { "@type": "City", "name": "Iluka" }, { "@type": "City", "name": "Glenreagh" } ], "address": { "@type": "PostalAddress", "addressRegion": "NSW", "addressCountry": "AU" } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://bushbillabongs.com.au/" }, { "@type": "ListItem", "position": 2, "name": "Septic Tanks NSW", "item": "https://bushbillabongs.com.au/septic-tanks-nsw" }, { "@type": "ListItem", "position": 3, "name": "Septic Tanks Grafton", "item": "https://bushbillabongs.com.au/septic-tanks-grafton" } ] } ] --- [![Bush Billabongs logo — septic systems and rural solutions](/assets/logo-DxEVICWB.png)Bush Billabongs ](/) [Home](/)[How It Works](/how-our-tanks-work)[About](/about)[Reviews](/reviews)[FAQ](/faq)[Blog](/blog)[Guides](/guides)[Contact](/contact) Products Locations [Get a Quote](/contact) 1. [Home](/) 2. [Septic Tanks NSW](/septic-tanks-nsw) 3. Septic Tanks Grafton Northern Rivers NSW # Septic Tanks Grafton — Delivered Across the Northern Rivers Grafton and the surrounding Clarence Valley cover everything from sewered town blocks to remote rural properties along the Clarence River. The valley is well-known for flood-affected lowland — siting decisions matter as much as tank choice, and the licensed plumber's local knowledge of flood levels is part of the value. [Enquire about Grafton delivery](/contact)[View both tanks](/products) ## Which tank for Grafton? Tank Best for From 1500L poly 2–4 person dwelling, granny flat, cabin, tiny home $949 2500L three-chamber 4–6 person home, farmhouse, larger household [View pricing](/product/2500l-septic-tank) ## Local context — Grafton Flood-prone blocks along the Clarence need the tank sited above the expected flood level wherever possible, with sealed access risers brought up clear of inundation. Where high ground isn't available, anti-flotation collars are standard — a buried tank should never float. Clarence Valley Council processes septic approvals under the standard NSW on-site sewage framework; your plumber files the paperwork. Rural blocks west toward Nymboida and Glenreagh sit on heavier clays and need longer absorption trenches. ## Delivery to Grafton We deliver poly septic tanks across the Northern Rivers from our depot, typically 3–10 working days after order. Pickup is available where practical and is the cheapest option. ## Council and approvals Septic approvals in Grafton are processed by **Clarence Valley Council** under the NSW on-site sewage management framework. Your licensed plumber lodges the paperwork as part of the install — see our [council approval guide](/do-i-need-council-approval-septic-tank) for the full process. ## Frequently asked questions — Grafton ### Do you deliver septic tanks to Grafton? Yes. We deliver 1500L and 2500L polyethylene septic tanks to Grafton and across Northern Rivers NSW. Lead time is typically 3–10 working days from order. Pickup from our depot is also available and is the cheapest option where it's practical for you. ### What size septic tank do I need in Grafton? For most Grafton-area households, a 1500L tank covers a 2–4 person home. Larger households (4+ permanent occupants), farmhouses or homes with a second dwelling typically step up to a 2500L three-chamber tank. Where there's a separate granny flat or workers' cottage, a dedicated 1500L tank for that dwelling is usually simpler than oversizing one shared tank. ### Which council handles septic approvals in Grafton? Clarence Valley Council processes on-site sewage management approvals for Grafton. Your licensed plumber lodges the Notice of Work before install and the Notice of Completion afterwards — that paperwork is part of every legitimate septic install, regardless of which tank brand you buy. ### How much does septic installation cost in Grafton? All-in install in the Northern Rivers NSW region typically runs $5,500–$9,500 for a 1500L poly system (tank, sand bedding, excavation, plumber connections, absorption trench, council fees). Concrete equivalents typically add $2,000–$4,000 on top, mostly in freight and crane costs. See our full cost breakdown for a line-by-line picture. ### Can a septic tank be installed on a flood-affected block near the Clarence? Yes, with the right siting. The tank goes on the highest practical ground on the lot, anti-flotation collars are added during install, and access risers are extended above the expected flood level. Your licensed plumber confirms siting against the council's flood mapping before excavation begins. ## Nearby towns we also service We deliver septic tanks across the Northern Rivers NSW — including: - South Grafton - Maclean - Yamba - Iluka - Glenreagh Don't see your town? [Get in touch](/contact) — if you're in NSW, we almost certainly deliver there. ## Ready for a tank delivered to Grafton? Get a fixed quote with pickup or delivery options for your Grafton block. [Get a quote](/contact)[See full cost breakdown](/septic-tank-cost-australia) [![Bush Billabongs logo — septic systems and rural solutions](/assets/logo-DxEVICWB.png)](/) Supplying affordable poly septic tanks — 1500L for tiny homes and granny flats, 2500L for larger family homes and acreage builds. Pickup across NSW, QLD, and VIC. Products [All Septic Tanks](/products)[1500L Septic Tank — from $949](/product)[2500L Septic Tank — from $1,790](/product/2500l-septic-tank)[About Us](/about)[FAQ](/faq)[Blog](/blog)[Guides](/guides)[Partners](/partners)[Contact](/contact) Service Areas [New South Wales ](/septic-tanks-nsw)[Queensland ](/septic-tanks-qld)[Victoria ](/septic-tanks-vic) Contact [0468 462 047 ](tel:+61468462047)[WhatsApp us ](https://wa.me/61468462047)[info@bushbillabongs.com.au ](mailto:info@bushbillabongs.com.au) Policies [Terms and Conditions](/terms-and-conditions)[Privacy Policy](/privacy-policy)[Returns and Refunds](/return-and-refund-policy)[Shipping and Collection](/shipping-and-collection)[Disclaimer](/disclaimer) © 2026 Bush Billabongs. All rights reserved. ABN: 97 146 094 166 · Supply only. No installation services. Call now