Delavan homeowners deal with the same plumbing problems that come with older housing stock everywhere in the region: pipes that have been patched more than once, water heaters that are past their best, drains that run slow every winter, and supply lines that were never insulated against a hard freeze. Cox Plumbing handles all of it, from a single dripping faucet to a full repipe, with licensed plumbers who know what the work actually involves before they start. We are open every day from 6:00 AM to 8:30 PM, and same-day appointments are often available when something cannot wait.
Landlords and commercial clients in Delavan call us too. A rental unit with a failing water heater or a backed-up drain is a tenant problem as much as a plumbing problem, and getting it resolved quickly matters. We work with property owners who need repairs across multiple units and with small businesses that cannot shut down for a full day while plumbing work is sorted out. One call. One plumber. One fair price.
When you call, we ask enough questions to understand what the situation is and give you a price before anything is scheduled. The job is scoped and priced before a wrench comes out, so you know what you are agreeing to. That is how it works for a drain cleaning, a water heater swap, or a sewer line repair.
What moves a quote is what the fault actually turns out to be and what has to come apart to reach it. A slow drain that clears with a standard cable costs less than one where the line has to be jetted or a section of pipe has shifted. A water heater that needs a new element is a different job from one where the tank has corroded through and the connection points need rebuilding. We explain what we find before we go further.
If the job turns out to be more involved than what was described on the call, we stop, explain what changed, and confirm the revised price before continuing. You are not presented with a number after the fact.
Appliance connections are one of those jobs that look simple until something goes wrong with them. A dishwasher, a refrigerator with a water line, a washing machine, a utility sink added to a basement or garage: each one needs a supply connection, a drain connection, and in some cases a shutoff valve installed correctly so it can actually be closed if something fails downstream.
The problems that come from a connection done poorly are rarely immediate. A supply line that is not properly seated drips behind the appliance for months before the damage shows. A drain that is not vented correctly causes slow drainage or sewer gas odors that are hard to trace back to the source. A shutoff valve that was never installed means the whole house water has to come off to address a single appliance. We make the connection properly the first time and leave the shutoff in a place where it can actually be reached.
A standard drain snake breaks through a clog and opens a path, but it does not clean the pipe wall. In a line that has years of grease, scale, or mineral buildup, the blockage comes back quickly because the restriction was never fully removed. Hydro jetting sends a high-pressure water stream through the line and strips the buildup from the interior of the pipe. It is the right call when a drain keeps clogging in the same place, when a camera shows heavy buildup, or when a commercial kitchen drain is running slow despite regular cleaning.
When the hot water stops entirely, the cause is usually a failed heating element on an electric unit or a thermocouple or gas valve issue on a gas unit. When it runs out faster than it used to, the tank may have significant sediment buildup reducing its effective capacity. Inconsistent temperature at the tap can mean a failing thermostat or a mixing valve that is not holding its setting. We diagnose the specific fault rather than defaulting to replacement when a repair is the right answer.
Tankless units heat water on demand rather than storing a tank of it, which suits households that have outgrown their current tank capacity or want to reclaim the space a large tank takes up. Installation involves more than swapping one unit for another. The gas line or electrical circuit may need to be upgraded to handle the load, the venting configuration changes, and the water supply connections are sized differently. We scope the installation before quoting it so the price covers what the job actually requires.
Galvanized steel pipe corrodes from the inside out over time, narrowing the passage water flows through and reducing pressure throughout the house. It also sheds rust into the water supply, which shows up as discoloration at the tap. Polybutylene pipe, installed in a range of homes from the 1970s through the mid-1990s, becomes brittle and fails at the fittings. When either material is present in an older Delavan home, recurring leaks and pressure problems are the usual result. Repiping replaces the affected runs with modern materials and restores full flow. We stand behind every pipe and fixture we touch.
Low water pressure in an older home is often a galvanized pipe problem, but not always. A failing pressure regulator, a partially closed shutoff valve, or a restriction at the meter connection can produce the same symptom. We trace the pressure drop to its actual source before recommending a fix, because replacing pipe in a house where the regulator is the problem solves nothing.
A house that has been through multiple owners and multiple rounds of repairs often has plumbing that does not follow a single logic. Pipes from different eras run alongside each other. Shutoff valves that have not moved in decades may be stuck open or corroded shut. Drain lines may have settled or shifted in ways that create persistent slow spots. Fault finding in a home like this takes longer because the system has to be read as it is, not as it was built. We work through it methodically and explain what we find.
When a water heater, a section of supply line, or a drain run has reached the end of its useful life, replacement is a cleaner answer than another repair. We scope replacement work the same way we scope repairs: explain what is involved, confirm the price, and complete the job to current code. For water heaters, that includes the supply connections, the relief valve and discharge line, and the venting where applicable. For pipe replacement, it includes restoring access points and testing the line before we leave.
Fixture installation, new drain runs, and supply line extensions for a bathroom addition or a kitchen remodel are jobs that benefit from being planned before walls close up. We work with homeowners and contractors to rough in plumbing correctly the first time, which avoids the cost of opening finished surfaces later to correct a connection that was not run to code. The full breakdown of what we handle is on the service page.
Getting your water flowing again is easier than you think when the scheduling process is straightforward. Call during our hours, which are every day from 6:00 AM to 8:30 PM, and you reach someone who can take the details of the job and get a licensed plumber scheduled. Same-day appointments are often available, and we handle weekend calls on the same schedule as any other day.
For urgent situations, including burst pipes, sewer backups, and no hot water, we treat the call as a priority and work to get someone out the same day. If the problem will not keep, tell us that when you call.
Tenants and businesses that need to stay operational during the work are a normal part of how we schedule. We coordinate around occupied units and active commercial spaces where we can, and we communicate clearly about what access is needed and when. Working here keeps us accountable to the neighbors we serve, and that means not leaving a rental unit without water longer than the job requires. Simple scheduling. Competitive rates. Water back fast.
We serve Delavan and the communities throughout Walworth County around it. That includes Delavan Lake, Darien, Elkhorn, Williams Bay, and Fontana-on-Geneva Lake, along with the rural properties and smaller communities in between. Residential and commercial plumbing work across the area is handled on the same schedule, with the same process for quoting and scheduling.
the plumbing details page sets out the options.
For most common jobs, yes. When you call, we ask enough questions to scope the work and give you a price before anything is scheduled. For more involved situations, such as a suspected main line failure or a repipe assessment, we may need to see the job first, and we will tell you that on the call so you know what to expect.
Not necessarily. For most repairs, shutting off the water is part of the job and we handle it when we arrive. If the situation involves an active leak that is spreading, shutting off the nearest valve before we get there limits damage in the meantime. When you call, we will tell you whether there is anything useful to do before the plumber arrives.
Shut off the main water supply to the house if you can reach the shutoff valve, and call us right away. A frozen pipe that has not yet burst can sometimes be thawed without damage, but the window to act is short. Do not apply open flame to a frozen pipe and do not run water through a line you suspect is frozen. Call (262) 955-2935 and we will get someone out as quickly as possible.
Older homes often have pipe materials, drain configurations, and shutoff valve placements that differ from what is standard today. That can mean more time spent tracing a fault or working around connections that were not installed to current code. We explain what we find as we go and confirm any change in scope before continuing, so the age of the house does not produce surprises on the invoice.
Not necessarily, but someone with authority over the property needs to be reachable in case a decision is needed mid-job. If you cannot be on site, make sure we have a number where you can be reached quickly. For jobs that require the water to be off for an extended period, we will let you know the expected scope before we start.
Call (262) 955-2935 during our hours, 6:00 AM to 8:30 PM, and explain the situation. We work with property managers and landlords regularly and can coordinate access with a tenant, a building manager, or another authorized contact. The key is getting us the right information on the call so we can make the visit work without a delay.
We replace it with current approved materials and make the transition at the appropriate connection points. Galvanized steel, polybutylene, and other outdated pipe types are replaced regularly in older homes, and the repair or repipe is done to current code using materials that are compatible with the rest of the system. We explain the plan before any work starts.
A small drip is worth a call. A faucet or supply line that drips continuously wastes a measurable amount of water over days and weeks, and a drip at a fitting inside a wall or cabinet can cause hidden damage long before it becomes visible. Catching it early is almost always less disruptive and less expensive than dealing with the result of leaving it.
Yes. We work with landlords and property managers who are not present at the address. You call to describe the problem, we confirm the price and the scope, and a licensed plumber handles the work at the property. We can communicate with a tenant directly about access if that is what the situation calls for. Call (262) 955-2935 and we will work through the logistics with you.
Whether the call comes from Delavan, Elkhorn, Williams Bay, or anywhere else in Walworth County, we handle it the same way: scope the job, confirm the price, and send licensed plumbers to take care of it. We are open every day from 6:00 AM to 8:30 PM.
Call (262) 955-2935 for a quote and we will get you on the schedule.
Also serving: Elkhorn, Lake Geneva, Whitewater, Janesville, Fort Atkinson.
You can browse our full area list.
We handle the full range of residential and commercial plumbing work across Delavan and the surrounding county, from a single clogged drain to a whole-house repipe. Every job is handled by licensed plumbers who scope and price the work before anything gets started. The table below covers what each service includes, who it fits, and what is useful to know before you call.
| Plumbing Service | Scope of Work | Best For | Helpful to Know |
|---|---|---|---|
| Leak Detection & Repair | supply line and wall pipe leaks, under-sink and connection repairs, outdoor water line repair | Anyone noticing water damage, high bills, or a dripping sound with no visible source | Finding a hidden leak early almost always costs less than repairing the water damage it causes if left alone. |
| Pipe Insulation & Winterization | exposed pipe insulation in unheated spaces, outdoor faucet winterization, full property drain-down for seasonal buildings | Homeowners preparing for a Wisconsin winter, especially those with seasonal or unoccupied properties | Scheduling winterization before the first hard freeze costs far less than repairing pipes that split during an overnight temperature drop. |
| Garbage Disposal Service | jam clearing and reset, leak repair at the sink flange, full disposal replacement | Kitchens where the disposal hums, leaks, or has stopped working | Most disposal repairs are quick. When replacement makes more sense, we confirm the new unit fits the drain connection before we leave. |
| Frozen & Burst Pipe Repair | frozen pipe thawing, burst pipe isolation and replacement, emergency response for active water loss | Delavan homeowners dealing with a freeze in exterior walls, crawl spaces, or unheated utility areas | Calling before a frozen pipe bursts gives us the best chance to thaw it without a full pipe replacement. |
| Faucet & Fixture Installation | faucet repair and replacement, sink and fixture upgrades, frost-free hose bib installation | Remodels, fixture upgrades, and outdoor faucet replacement before winter | Frost-free hose bib installation is a practical upgrade for Delavan homes before the first hard freeze of the season. |
| Emergency Plumbing | burst pipe response, major leak containment, no-hot-water calls | Any urgent situation where water is actively damaging the home or the household has lost hot water | We take calls every day from 6:00 AM to 8:30 PM, and same-day service is often available for urgent situations. |
| Water Heater Repair & Replacement | tank and tankless repair, full unit replacement, thermostat and element service | Households or businesses with no hot water, inconsistent temperature, or an aging unit | Tankless upgrades are a common choice for Delavan homeowners who want on-demand hot water and a smaller footprint. |
| Sump Pump Installation | new pump installation, worn unit replacement, discharge line and check valve service | Delavan homes with basements vulnerable to spring snowmelt and heavy rain | A properly sized pump with a clear discharge route is what separates a dry basement from a water damage situation during snowmelt season. |
| Water Pressure & Shutoff Valve Repair | pressure regulator diagnosis and replacement, shutoff valve repair and replacement, backflow preventer installation | Homes with low pressure throughout or at a single fixture, and seized or failing shutoff valves | A failing pressure regulator affects the whole house at once, while a mineral-clogged line usually shows up at specific fixtures. |
| Toilet Repair & Installation | flapper and fill valve repair, wax ring replacement, full toilet replacement | Homeowners with a running, rocking, or leaking toilet or a fixture that needs upgrading | A running toilet can waste a significant amount of water before it shows up as visible damage, but the repair is usually straightforward. |
| Sewer & Main Line Service | main line clearing and inspection, camera line inspection, trenchless repair where applicable | Homes with slow drains throughout, gurgling toilets, or sewage odors near floor drains | We service the sewer line from the house out to the city connection. Tank and drain field work falls outside what we do. |
| Drain Cleaning & Clog Removal | kitchen and bathroom drain clearing, main line clog removal, hydro jetting for grease and root buildup | Homeowners and commercial kitchens with slow or backed-up drains | Recurring clogs in the same drain often point to a line condition issue, not just a surface blockage. |
Call (262) 955-2935 to get a quote and talk through the details with someone who can answer your specific questions.
(262) 955-2935