What you're probably noticing
A toilet that gurgles when the washing machine drains. A sink that's slow to empty on the second floor but fine downstairs. A faint sewer smell in the basement that comes and goes with the weather. None of these feel urgent on their own, which is exactly why they get ignored for months in Springfield homes, especially the older ones around Rountree, Walnut Lawn, and the Woodland Heights area where cast iron and galvanized pipe are still common.
The trouble is that supply problems, drain problems, and vent problems often produce the same symptoms. Low water pressure at one fixture can mean mineral buildup in a supply line, or it can mean a vent stack that's partially blocked and causing a siphon effect somewhere else in the system. A slow drain can be a clog, or it can be a vent issue that's starving the drain of the air it needs to flow properly. Guessing wrong means paying twice.
Why Springfield's housing stock makes this worse
Springfield has a lot of homes built between the 1940s and 1970s, plus a steady wave of newer construction pushing out toward Republic and Nixa. The older homes often still have original galvanized supply lines, which corrode from the inside and narrow over decades. You can't see this from outside the pipe. The water still runs, just slower and with less pressure, and it tends to get worse gradually enough that people adjust without noticing.
Clay and cast iron drain lines are common in that same older housing, and both are vulnerable to the shifting that happens with our clay-heavy soil. Springfield sits on soil that swells when wet and shrinks when dry, and with our pattern of wet springs followed by dry late summers, that movement is constant. Old joints separate a little at a time. Roots from mature trees, especially the big oaks and sweetgums in established neighborhoods, find those gaps and work into them.
More on this from Supply, Drain And Vent, And Why One Fault Looks Like Another.
What the seasons actually do
Winter freeze-thaw cycles matter here more than people expect for a Midwest city that doesn't get brutally cold for long stretches. It's the repeated freezing and thawing, not one hard freeze, that stresses pipes and fittings, particularly in crawl spaces and unheated basements common in Ozarks-area homes. A pipe that survives twenty mild winters can fail on the twenty-first if a fitting was already weakened.
Spring rain raises the water table across the region, especially given the karst terrain and sinkhole-prone ground common around Greene County. When the ground is saturated, sewer lines run fuller, and any crack or separated joint in a drain line lets groundwater in. That can overload a system and cause backups that have nothing to do with anything you flushed or washed. Late summer dry spells shrink the soil again, which can pull at already-loose joints.
What you can check yourself
Start simple. If one fixture is slow, check whether it's isolated or part of a pattern. Run water in multiple places at once and listen for gurgling, which usually points to a vent problem rather than a simple clog. Look at your water pressure at an outside spigot versus an indoor faucet. A big difference suggests a supply-side issue rather than a drain issue.
Check your vent stack from the roof if you can safely see it, for leaves, nests, or obvious blockage. Check basement or crawl space floor drains for standing water or smell, since this is often the first place a venting problem or a drain backup shows itself. None of this requires tools beyond a flashlight and patience.
Where it stops being a homeowner job
If you've checked the obvious things and the symptom keeps moving around, or it only happens after rain, or you're getting both drainage trouble and pressure trouble at the same time, that's the point to stop guessing. Mixed symptoms usually mean the systems are interacting, maybe a vent restriction causing both slow drainage and gurgling, or a partially collapsed line reducing flow in both directions. Diagnosing that without the right equipment, like a camera for the line or a pressure gauge for the supply side, means a lot of wasted repair attempts.
It's also worth calling in help before any digging starts, given how common shifting soil and tree root intrusion are in this area. A line that looks fine on a camera inspection one year can develop a new problem the next, simply from ground movement. That's not a sign anyone did anything wrong. It's just what this soil and this climate do to pipe over time, and it's why ongoing, unexplained plumbing symptoms deserve a real inspection rather than another round of home remedies.