Forestville's copping the early stages of what happens when a massive redevelopment lands on aging infrastructure. The $250 million Forestville development at the old Le Cornu site on Anzac Highway got its amended master plan through SCAP in March 2026, and Buildtec's already launched the first 93-dwelling apartment block after nearly selling out the terraces. SA Water's working on the Inner South Masterplan to coordinate water and wastewater upgrades for that 3.6-hectare site, but the existing network serving the older homes around Second Avenue and Ethel Street wasn't built for this kind of load. We've had 29mm of rain in the first week of May alone, and those highly reactive clay soils are already moving. If you're in one of the original 1950s-60s builds backing onto Brownhill Creek or near the Wilberforce Walk works, now's the time to get your drains checked before the ground shifts further and the new development load hits the mains.
City of Unley notes
“Deputation from Debra Clarke, Forestville resident, regarding Goodwood Oval (Item 2.2, Council Meeting 27 April 2026)”
City of Unley
Goodwood Oval sits right on Forestville's boundary — any works or drainage changes there affect stormwater flow for homes along the eastern edge of the suburb near the reserve.
“City Infrastructure Projects Status Update 2025/26 FY (March Quarter) received — Resolution C0038/26”
City of Unley
The council's tracking active infrastructure works across Unley including the Wilberforce Walk stages along Brownhill Creek — ground disturbance in that corridor puts stress on existing drain connections for Forestville homes backing onto the creek.
“Draft 2026-27 Annual Business Plan includes proposed Capital Renewal Program of $13.18M net for community consultation (Resolution C0043/26)”
City of Unley
Renewal spending at this scale means more roadworks and underground infrastructure replacement across Unley — Forestville's aging mains and sewers are candidates, and any digging near your property line is worth monitoring for connection impacts.
●Source: City of UnleyLast updated April 2026
Forestville profile
Forestville sits tight against Greenhill Road, and the City of Unley is currently looking at infrastructure works along that corridor. That means potential digging, traffic disruptions, and older pipes in the area copping extra stress. If you're in one of the older homes on the Forestville side of Greenhill, it's worth knowing what's coming — and making sure your drains and mains are in good shape before any ground movement starts.
Second Avenue between Leader Street and Wilberforce Walk is where SA Water's already had to replace 163 metres of main because the rigid pipes couldn't handle the clay soil movement — if you're on that stretch, your internal plumbing's been through the same ground heave. The blocks backing onto Brownhill Creek and the Wilberforce Walk shared path are dealing with the tail end of the Stage 2 works and whatever runoff changes come with the channel enclosure. Ethel Street near Forestville Reserve has been disrupted by the archway upgrades since mid-2025, and the older homes on the eastern side have poor natural fall that makes stormwater pool rather than drain. The 1950s-60s stock throughout has the same failure pattern: galvanised supply lines corroding internally, clay sewers compromised by root intrusion, and hot water units that should've been replaced a decade ago.
When calls come in: Forestville's call pattern isn't established yet, but the housing stock suggests morning pressure complaints (galvanised pipes worst after overnight stagnation) and evening drain backups when households hit peak water use simultaneously. Wet weather events like the early May rain will spike emergency calls for stormwater and sewer issues.
Forestville emergency callouts
Emergency Plumber — Burst pipe — water off, flooding riskForestville, SA · 30–60 min
Emergency Plumber — Blocked drain — slow or backing upForestville, SA · 30–60 min
Emergency Plumber — Hot water failure — no heat or pressureForestville, SA · 30–60 min
Emergency Plumber — Sewer backup — sewage at floor wasteForestville, SA · 30–60 min
Emergency Plumber — Leaking tap or fitting — urgent repairForestville, SA · 30–60 min
Emergency Plumber — Gas fitting emergency — isolation requiredForestville, SA · 30–60 min
Forestville Plumber FAQ
It's a real concern. SA Water's Inner South Masterplan is specifically coordinating upgrades because the existing network wasn't designed for 93+ new dwellings plus the terraces already sold. During construction and connection phases, you might see temporary pressure drops or increased sediment in the mains. More importantly, the extra load on the sewer network can expose weaknesses in your own connection — if your clay line's already got root intrusion or offset joints, the increased flow downstream can turn a slow drain into a full backup. Worth getting a camera inspection now to know where you stand before the new buildings come online.
Gurgling after 29mm of rain in a week usually means air is being displaced somewhere it shouldn't be. In Forestville's older housing stock, that's often a partial blockage in the clay sewer line — roots or debris restricting flow, so water backs up and pushes air through your fixtures. If it clears within an hour of the rain stopping, you've probably got a minor obstruction. If it persists, or you're getting slow drainage in multiple fixtures at once, the blockage is further down the line and needs a camera to locate. Don't ignore it — partial blockages become full blockages, and in these reactive clay soils, a backed-up line puts pressure on joints that are already stressed.
The sequence is predictable in Forestville's 1950s-60s builds. First sign is reduced pressure at the furthest tap from the meter — usually the back bathroom or laundry. Then you'll notice rust-coloured water first thing in the morning when the pipes have been sitting overnight. Next comes pinhole leaks, usually at joints or elbows where corrosion concentrates. By the time you're seeing wet patches in walls or under the house, you're past replacement and into damage control. If your home's got original galvanised and you're seeing any pressure drop, get a plumber to assess the internal condition — a re-pipe before failure is half the cost of emergency repair plus water damage.
These homes were built solid, but the plumbing's done its time. The failure order is usually: galvanised supply lines first (internal scaling and corrosion after 60+ years), then clay sewer lines (root intrusion and joint failure from decades of soil movement), then hot water units (if original or early replacement, they're overdue). Earthenware drainage under some of the older blocks is particularly vulnerable — it cracks rather than flexes when the reactive clay moves. Copper's generally held up better, but you'll see green corrosion at joints and flexi-hose connections that need checking. Budget for a full plumbing assessment if you're buying or renovating — knowing the sequence lets you plan replacements before emergencies.
You can't tell from the symptoms alone — both present as slow drainage, gurgling, and eventually backup. But there are clues. A blocked drain usually affects one fixture or one run first, and a plunger or drain cleaner might temporarily improve flow. A collapsed drain affects multiple fixtures on the same line simultaneously, and nothing you do from inside improves it. The only definitive answer is a CCTV camera inspection — a plumber we dispatch can run a camera through the line and show you exactly what's happening. In Forestville's clay soils, collapsed sections are common where tree roots have cracked the pipe and soil has washed in. That's excavation territory, not drain cleaning.
In Forestville, absolutely. Most of the post-war housing stock has either original storage units (way past their 10-15 year lifespan) or early replacements that are now pushing 20 years. The failure mode is usually the tank rusting through internally — you won't see it coming until you've got 300 litres of water in your laundry or under the house. Replacing proactively means you choose the timing, compare options, and avoid the emergency premium. A plumber we dispatch can assess your current unit's condition and give you a realistic timeline. If it's in a cupboard or ceiling space, the water damage from a tank failure makes the replacement cost look trivial.