Plumbing on the North Side
Three-flats and courtyard buildings carved into condos, garden units sitting below the sewer, and a great deal of plumbing that three households share whether they know it or not.
What the building shares, and what it does not
Most North Side plumbing calls are in buildings holding between two and six households: frame and masonry three-flats, courtyard buildings, and a large number of both carved into condominiums through the 1990s and 2000s. The ownership was divided; the plumbing was not. One water service enters the building, one or two drain stacks carry everything down, one vent system serves all of it. So a symptom in one unit is regularly produced by something in another, and the first useful question on a call here is not what is wrong with your bathroom but whether anyone else in the building is seeing it.
That question separates two very different jobs. A slow tub on the third floor and a gurgling toilet on the first are usually one problem, a stack that is partly blocked below both of them, and treating them as two produces two invoices and no repair. Getting the stack looked at rather than the fixture is what breaks that cycle, and it takes one camera run rather than three visits.
For anything beyond a single fixture, the deliverable worth asking for in a shared building is a map of the valves: what each one closes, and what has to be shut to work in a given unit. Buildings altered three or four times over a century almost never match their labels. That is the whole subject of multi-unit building plumbing, and it is the difference between a scheduled shutdown and an unplanned one at eight in the evening.
The cheapest diagnostic on the North Side
Knock on the neighbour’s door before you call. Two units with the same symptom means the stack, and that changes who owns the repair, who authorises it, and what needs to be inspected. It costs nothing and it routinely saves a wasted visit.
Garden units, and the pump under the floor
A garden unit’s fixtures sit below the level of the sewer in the street, which means nothing it drains can leave by gravity. Everything (the shower, the toilet, the laundry) collects in a sealed basin set into the floor and is lifted mechanically into the building drain by an ejector pump. It is the most ignored component in this housing type and the one whose failure does the most damage, because when it stops the discharge has nowhere to go but back into the lowest apartment.
Worth knowing the difference between the two pumps you may have: a sump pump moves groundwater out of a pit and is a water-management device, while an ejector moves sewage and is a drainage device. Many North Side basements contain both, they are not interchangeable, and a sump-grade pump installed in an ejector basin will fail early and unpleasantly. The reasoning and the maintenance interval are on ejector pump repair and installation.
The early signs are worth acting on: a basin that runs higher than it used to, a pump that cycles twice for one flush, a smell that comes and goes. Any of those is a service call rather than an emergency, which is the cheapest version of this problem, the expensive version arrives on a Sunday with the floor already wet, and that one lands on basement flooding and sewer backup.
Rear porches, gangways, and the pipe you can see
North Side buildings put a surprising amount of plumbing outside the heated envelope. Drain lines run down the back of rear porches, hose bibs come off porch framing, supply lines cross unheated gangways five feet wide, and downspouts at the back are frequently tied into the combined sewer. All of it works fine until the first sustained freeze, and then the failures arrive in a cluster over about forty-eight hours.
The vulnerable point is almost always where an exposed line passes through the masonry wall: the pipe is cold on one side, warm on the other, and the joint sits in the temperature gradient. An hour in October closing and draining the exterior bibs, per outdoor hose bib winterization, removes most of that risk for the cost of a service call rather than a burst line and a ceiling.
Lakefront high-rises
Along the lake the housing stock changes completely, and so does the nature of the work. In a mid-century or later tower the plumbing is a building system rather than a household one: water is boosted to the upper floors, and a pressure complaint in a unit is far more often a zone or regulator question than anything to do with the fixtures in the apartment. That distinction is worth making before a plumber starts replacing valves, the reasoning sits on water pressure regulators.
The other difference is procedural. Shutoffs in a tower serve risers rather than apartments, so they close water to every unit stacked above and below yours. That turns a faucet change into scheduled work coordinated with building management, with a window, a notice, and someone from the building present. It is not obstruction, it is how the plumbing is arranged, and knowing it in advance is the difference between a booked appointment and a wasted trip up thirty floors.
What We Dispatch For
Work called in most often on the North Side
Coverage
Where this covers
Rogers Park south to Old Town, and inland to the Lincoln Square and North Center blocks that share the same building types.
Rogers Park · West Ridge · Edgewater · Andersonville · Uptown · Lincoln Square · Ravenswood · North Center · Roscoe Village · Lake View · Wrigleyville · Lincoln Park · Old Town · Budlong Woods
Common Questions
Answers before you call
Who pays when the problem turns out to be in a shared stack?
The condo declaration decides it, not the plumber and not the unit owner who happened to notice first. In most deconverted three-flats the pipe inside your walls up to the point it joins the common stack is yours, and the stack itself is a common element, which means a blockage down the stack is an association expense even though the water came out of your bathroom.
Get the answer before authorising work rather than after. The useful sequence is: establish whether more than one unit is affected, get the stack looked at rather than the fixture, and only then decide who is contracting for the repair. Calls that skip that step are how the same stack gets rodded three times in a year on three separate invoices.
My garden unit smells of sewage, especially after rain.
That points at the ejector basin rather than at a drain. A garden unit sits below the level of the sewer, so its waste collects in a sealed pit and is pumped up to the building drain. The seal on that pit and its vent are what keep the smell out of the apartment, and both are routinely disturbed during flooring or laundry work.
After rain specifically, the other candidate is the check valve on the pump’s discharge. If it is not holding, what was lifted comes back into the basin, the pump short-cycles, and the pit runs high enough to gas off into the room. Neither is a deodorising problem, the pit and the valve need looking at.
Why is pressure poor on the top floor of my three-flat?
In a building of this age it is usually not the supply from the street, it is the riser inside the building. Original galvanized steel closes up from the inside as corrosion builds, and the effect compounds with height: the top-floor fixtures are at the far end of the most restricted pipe, so they lose flow first and worst.
The tell is that pressure is acceptable in the basement laundry tub and poor three floors up, and that it got worse over years rather than overnight. A pressure reading at two points in the building settles it in a few minutes, and it is worth doing before anyone replaces a fixture that was never the problem.
The building has one shutoff for all three units. Can that be changed?
Usually yes, and in a shared building it is one of the more valuable pieces of work available. Individual unit valves mean a repair in one apartment does not shut water off to the whole building, which changes both the cost and the politics of every future job.
The prerequisite is knowing what the existing pipe actually does, because in buildings that have been altered several times the risers rarely feed what the labels claim. That mapping is the real deliverable and it is worth having on paper whether or not the valves get added in the same visit.
Elsewhere in the City
The other sides
Is anyone else in the building seeing it?
On the North Side that one question decides whether the problem is yours or the stack’s, and it changes who should be calling. Tell us what the neighbours are seeing and we can usually narrow it before anyone is dispatched.
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