Council's just closed off a portion of Mary Place between Charles Street and Charles Walk Drainage Reserve — Resolution C0037/26 from the 27 April meeting. That's a formal road closure, not a dig-up, but any time you're messing with drainage reserves and road boundaries in an area with 60-year-old clay pipes, there's risk of service disruption downstream. We copped 14mm on the 2nd and another 15mm on the 4th of May, which isn't a deluge but it's enough to saturate the reactive clay soil Unley Park sits on. That soil movement puts stress on the old salt-glazed earthenware sewer lines running under Victoria Avenue and Northgate Street. The footpath renewal work on Victoria Avenue from Cross Road to Northgate Street is wrapping up, and any vibration from that machinery can shift already-compromised pipe joints. If your drains have been sluggish since the rain or you're getting gurgling from the floor waste, don't wait — call us and we'll get a plumber out who knows exactly what's under these blocks.
City of Unley notes
“Road Closure - Portion of Mary Place, Unley between Charles Street and Charles Walk Drainage Reserve approved (Resolution C0037/26, 27 April 2026)”
City of Unley
Any formal changes near a drainage reserve can affect stormwater connections for nearby properties on Charles Street — worth checking your drains are flowing properly if you're in that catchment.
“City Infrastructure Projects Status Update 2025/26 FY (March Quarter) received (Resolution C0038/26)”
City of Unley
The Victoria Avenue footpath renewal from Cross Road to Northgate Street is part of this program — ground disturbance from that work can shift old sewer and water connections on adjacent properties.
“Draft 2026-27 Annual Business Plan and Budget endorsed for consultation, including $13.18M Capital Renewal Program (Resolution C0043/26)”
City of Unley
Continued infrastructure renewal across the City of Unley means more ground disturbance coming — older Unley Park properties with original pipe connections should be proactive about inspections before council works reach their street.
●Source: City of UnleyLast updated April 2026
Unley Park profile
The City of Unley is looking at infrastructure upgrades along Greenhill Road — the main artery that runs right along Unley Park's northern edge. Any road works up there mean digging, and digging near older suburban streets puts pressure on the underground services that feed into the houses behind it. Unley Park is solid older housing stock — think pre-1960s sandstone and brick, with clay pipes and lead junctions that were already well past their best before date. Worth knowing what's coming.
Victoria Avenue between Cross Road and Northgate Street is where we'd expect the most calls — the footpath renewal work there has been shaking up ground that hasn't been disturbed in decades, and the homes backing onto that stretch are all pre-1960s with original earthenware sewers. Whistler Avenue and Cedar Avenue have the big established gardens with mature trees, and those root systems have had 60-plus years to find every joint in the clay pipes. The newer DA activity around Bellevue Place shows modernisation happening, but those renovations often expose just how far gone the original services are when they start digging for pools or extensions. May's moderate rain has saturated the clay enough to trigger movement — expect blockages and slow drains to spike over the next few weeks as the soil settles.
When calls come in: Unley Park's demographic skews older and owner-occupied, so calls typically come through mid-morning once people are up and using facilities, or early evening when families return home. Weekend mornings are common for non-urgent issues that have been building during the week.
Unley Park emergency callouts
Emergency Plumber — Burst pipe — water off, flooding riskUnley Park, SA · 30–60 min
Emergency Plumber — Blocked drain — slow or backing upUnley Park, SA · 30–60 min
Emergency Plumber — Hot water failure — no heat or pressureUnley Park, SA · 30–60 min
Emergency Plumber — Sewer backup — sewage at floor wasteUnley Park, SA · 30–60 min
Emergency Plumber — Leaking tap or fitting — urgent repairUnley Park, SA · 30–60 min
Emergency Plumber — Gas fitting emergency — isolation requiredUnley Park, SA · 30–60 min
Unley Park Plumber FAQ
The Mary Place closure between Charles Street and Charles Walk Drainage Reserve is a formal road closure rather than active excavation, but it sits adjacent to a drainage reserve. If you're on Charles Street or nearby, any historical stormwater connections running toward that reserve could be affected if council modifies drainage infrastructure later. Watch for slow floor drains or gurgling after rain — that's your early warning that something's shifted. A plumber we dispatch can run a camera inspection to check your connection integrity before it becomes an emergency.
Unley Park's reactive clay soil swells when it absorbs moisture, even from 14-15mm of rain like we had early May. That swelling puts lateral pressure on old earthenware sewer pipes, closing up cracks that normally let water seep away and compressing joints that were already loose. If your drains were borderline before the rain, they'll be noticeably slower now. The fix depends on whether it's root intrusion, a cracked pipe, or a partial collapse — a CCTV inspection from a plumber we dispatch will tell you exactly what you're dealing with and whether it's a clear-and-patch job or a full relining.
First sign is usually discoloured water — brown or orange tinge when you first turn on the tap in the morning, clearing after 30 seconds. That's rust flakes from inside the pipe. Next stage is reduced flow, especially at the furthest tap from the meter. Final stage is pinhole leaks, often hidden in walls or under slabs until you notice damp patches or a spike in your water bill. In Unley Park's pre-1960s homes, most galvanised mains are past their 50-year service life. A plumber we dispatch can pressure-test the line and recommend staged replacement before you're dealing with a burst.
Inter-War bungalows in Unley Park typically have salt-glazed earthenware sewer pipes, galvanised iron water mains, and often lead service connections from the street. The sewer lines fail first — root intrusion and joint separation from 100 years of soil movement. Water mains go next, usually internal corrosion causing flow restriction and discolouration. Hot water systems in these homes are often retrofitted storage units that weren't sized for modern usage. Expect to address sewer, then water main, then hot water in that order over a 5-10 year window. A plumber we dispatch can assess all three systems and prioritise based on condition.
A blockage clears with a jet or electric eel and stays clear for weeks or months. A collapse or crack keeps blocking in the same spot because the pipe wall has failed and debris catches on the damaged section. If you're calling for the same drain every few months, it's almost certainly structural damage rather than just buildup. The only way to know for sure is a CCTV camera inspection — a plumber we dispatch will run the camera through and show you exactly where the pipe has failed, whether it's a crack, root mass, or full collapse, and what the repair options are.
The mature jacarandas and plane trees on Victoria Avenue and Whistler Avenue have root systems that extend 10-15 metres from the trunk, actively seeking moisture from pipe joints. Prevention starts with knowing where your sewer line runs — a plumber we dispatch can locate it and identify vulnerable joints. Chemical root treatments can slow regrowth after a clear, but they don't fix cracked pipes. For long-term protection, pipe relining seals the joints from the inside without excavation. If you've got established trees within 10 metres of your sewer line, schedule an annual camera inspection to catch intrusion early.