That slow drip coming from your kitchen or bathroom faucet might seem like a minor inconvenience, but it is trying to tell you something. As a plumber who has worked in Jacksonville homes since 1987, I can tell you that most dripping faucets share a handful of common causes, and catching them early saves you real money and headaches down the road.
Most dripping faucets are caused by worn out washers, damaged o rings, a corroded valve seat, loose or broken parts, or excessive water pressure. These failures allow water to slip past internal seals even when the faucet handle is turned off.
Even a slow leak from a single faucet can waste about 3,000 gallons of water per year, leading to rising water bills and potential water damage around sinks, cabinets, and countertops.
Jacksonville's very hard water (around 260 ppm) and humid subtropical air accelerate mineral buildup and corrosion inside faucet components, especially around the faucet spout and valve seat.
Some faucet leaks are a simple repair you can handle yourself if you can safely turn off the water and replace parts, but persistent leaks, water pressure problems, or signs of broken plumbing pipes call for a professional plumber.
Donovan Air, Electric & Plumbing is a local Jacksonville plumbing team that can diagnose faucet dripping issues, balance water pressure, and repair or replace leaking faucets with flat-rate pricing and a satisfaction guarantee.
You know the scene. It is 11 p.m., the house is quiet, and all you can hear is that steady drip of water dripping into the sink. You tell yourself it is no big deal. Then a month or two later, your utility bills jump, and you start wondering what changed.
A dripping faucet usually means one or more internal parts are no longer creating a tight seal. Your plumbing system delivers hot and cold water under constant pressure, and when seals wear down, water finds its way through. A single faucet dripping once per second can waste more than 3,000 gallons of wasted water per year, which is enough to fill a small swimming pool.
Here in Jacksonville and St. Augustine, outdoor hose bibbs, kitchen sinks, and bathroom water fixtures all see heavy use and high mineral exposure. Older homes built before the 2000s are especially vulnerable because their original rubber washer and seal materials have been soaking in our hard water for decades. Ignoring a faucet dripping problem can lead to more than just noise. Dripping faucets can increase water bills significantly over time, and water collects around sinks causing stains, soft spots, and hidden corrosion that eventually forces a full faucet replacement. Ignoring a drip can also lead to deterioration of faucet components that would have been a quick fix if caught early.
A leaking faucet almost always traces back to a short list of worn or damaged parts. This is true whether you have a cartridge faucet, a ball-type, a ceramic disc, or one of the older compression faucets still found in plenty of Jacksonville bathrooms. Common causes of dripping faucets include worn-out washers and damaged O-rings, but the list does not stop there.
Identifying your faucet type makes troubleshooting much easier. If you have two handles that turn multiple rotations, you likely have compression faucets, which rely on rubber or synthetic washers to seal water flow. A cartridge faucet uses a movable plastic or brass cylinder to control water flow and typically operates with a quarter-turn handle. Ball-type faucets have a single lever over a rounded cap.
Consider a 1990s Jacksonville home where the original bathroom faucets start dripping at the faucet spout. The internal rubber parts have simply reached the end of their life after 25-plus years of exposure to our mineral-heavy water supply.
Three sealing surfaces fail more often than anything else inside a leaky faucet: washers, o rings, and the valve seat. Understanding how each one works helps you figure out where your drip is coming from.
Flat rubber or nylon washers press against the valve seat every time you close a compression faucet. Over years of friction and high water pressure, those washers flatten, crack, or harden. Worn washers can cause a leaky faucet that drips steadily from the faucet spout. When most homeowners replace worn out washers, the drip stops right away.
Damaged o rings are small rubber rings that sit around the faucet stem or inside the faucet assembly. When they dry out or become brittle from heat, chlorine, and mineral buildup, you will notice water seeping from the faucet handle base. Inspecting o rings for cracks or brittleness is a good first step whenever you see a leak around handles.
The valve seat connects the faucet body to the faucet spout. In Northeast Florida, water sediments and hard water minerals cause valve seat corrosion, leaving the surface pitted and rough. No washer can seal against a corroded valve seat. Light corrosion can sometimes be cleaned by soaking with white vinegar and scrubbing, but heavy pitting usually means professional help is needed for valve seat replacement using a specialized seat wrench.
Not every faucet dripping problem comes from a failed seal. Sometimes the culprit is simply loose or broken parts inside or under the handle.
The packing nut is the nut that compresses packing material or o rings around the faucet stem. Over extended periods of use, vibrations and normal wear can loosen it slightly, and loose parts under the faucet handle can cause water leaks around the spout or base. Gently tightening a packing nut with the correct wrench can sometimes stop a slow drip, but over-tightening risks stripping threads or cracking older brass components.
Other wear points include set screws in faucet handles, adjusting rings in ball faucets, and mounting hardware under the sink. When these shift, internal seals no longer line up correctly, and the result is more leaks.
Here is a real-world example: a homeowner tightens the packing nut on a kitchen faucet and the slow leak stops for a few weeks. But when the dripping faucet refuses to stay fixed, it usually means it is time to replace parts rather than keep tightening loose parts.
Normal residential water pressure typically runs between 40 and 60 psi. When pressure climbs above that range, it can force water past internal seals and washers even if they are not badly worn. High water pressure is one of the sneakier reasons behind a leaking faucet. Reducing household water pressure to 60 psi or below protects all plumbing fixtures throughout your home.
If you notice water dripping from faucets only at night or when no other fixtures are running, that is often a clue that static water pressure is too high. In multi-story Jacksonville homes and neighborhoods with older municipal infrastructure, pressure spikes are common. These surges shorten the life of washers, o rings, outlet seals, and cartridges in every faucet in the house.
When more than one faucet dripping issue shows up at the same time, or toilets and shutoff valves start making noise, have a professional plumber test your pressure with proper gauges. Correcting water pressure also protects your water heater, ice maker, washing machine valves, and other water fixtures from premature wear and broken pipes.
A small faucet dripping problem connects to bigger impacts than most people expect. Leaky faucets waste water, drive up utility bills, and quietly damage the areas around your sinks. Even a slow leak can show up as rising water bills over a few billing cycles. In Jacksonville, where water usage is tracked in 1,000-gallon increments, even a modest increase in water waste raises water bills noticeably.
Constant moisture around sinks, cabinets, and countertops softens wood, swells particleboard, stains caulk, and eventually leads to mold and mildew growth. In Florida's humid climate, mold and mildew thrive in areas with constant moisture from leaks. Water damage from leaks can weaken structures and require costly repairs that far exceed the cost of fixing a drip.
Prolonged dripping water at the faucet spout or base can corrode trim rings and the faucet body itself, sometimes making replacement the only option. Ignoring leaks can lead to costly plumbing repairs. Take the example of a St. Augustine rental condo where a neglected bathroom leak warped vanity doors and allowed mildew growth behind the sink wall, turning a simple repair into a renovation project.
Many homeowners can handle a simple faucet repair with basic tools and a little patience. The key is knowing what to look for and when to stop.
Before you touch anything, turn off the water supply under the sink using the hot water and cold water shutoff valves. Place a drain cover over the opening so you do not lose small parts. Then gently remove faucet handles and inspect what is inside.
Look for obvious signs of wear:
Cracked, flattened, or brittle washers
Worn seals or crumbling o rings
Mineral buildup or corrosion on cartridges and seats
Bring old parts to your local hardware store or any hardware store nearby to match replacement parts by size and shape. Cleaning mineral deposits with white vinegar can prevent premature corrosion of valve seats and washers. Replace worn washers and inspect o rings for damage to prevent future drips. When reassembling, put faucet parts back together in reverse order and use plumber's grease on moving components.
If the faucet is very old, parts are hard to identify, or you see signs of corroded pipes or water damage under the sink, it is safer to stop and call for professional help rather than risk making plumbing problems worse.
While DIY fixes handle many simple leaks, some dripping faucets signal deeper issues that need expert tools and training. A plumber can diagnose hidden plumbing issues effectively and get to the root of the problem.
Call a professional plumber when you experience:
Recurring leaks after you replace parts
Signs of high water pressure throughout the home
A corroded valve seat that needs a seat wrench or resurfacing
Water stains or soft spots under cabinets
Broken plumbing pipes or corroded pipes behind walls
Any situation where a dripping faucet refuses to stop after basic repairs
Professionals can handle severe corrosion and broken parts, test water pressure accurately, and source OEM replacement parts with warranties. Donovan Air, Electric & Plumbing has provided licensed plumbing services in Jacksonville and St. Augustine since 1987. We offer flat-rate pricing and technicians who can repair, rebuild, or replace any leaking faucet.
If you hear a persistent drip, notice rising water bills, or suspect a hidden plumbing problem, schedule a visit. A quick fix today prevents expensive water damage tomorrow.
A few simple habits go a long way toward keeping your faucets drip-free and protecting your water bills from unexpected jumps.
Inspect faucet handles, packing nuts, and exposed connections once or twice a year to catch loose or broken parts before they begin to leak.
Clean aerators and visible mineral buildup with white vinegar every few months. In Jacksonville's mineral-heavy water, this limits sediment that damages worn seals and cartridges.
Install or maintain a whole-home pressure regulator. Keeping pressure in the safe range is one of the best ways to prevent future drips across all your water fixtures.
Consider a preventive maintenance membership. Donovan's membership plans can include periodic plumbing checks alongside HVAC inspections, helping catch small water leaks, aging faucet parts, and corroded shutoff valves before they fail.
Here are answers to questions we hear regularly from Jacksonville homeowners that were not fully covered above.
That is not a good idea. Even a slow drip adds up to thousands of gallons per year and often goes unnoticed on water bills at first. Meanwhile, water collects quietly around cabinets and metal faucet parts, causing damage that costs far more to fix than a simple repair would have.
If water only appears at the faucet spout or around the faucet handle when the faucet is on or off, it is usually a faucet component issue. But if you see wet spots inside the cabinet, stains on nearby walls, or hear hissing with the faucet off, there may be a supply line leak or broken parts behind the wall. That calls for a professional plumber.
If the faucet is more than 15 to 20 years old, heavily corroded, or needs repeated repairs for damaged o rings, washers, and cartridges, replacement is typically more cost-effective. A plumber can install a modern, water-efficient model that reduces future maintenance and water usage.
Faucet leaks that worsen at night often point to higher static water pressure when nobody in the neighborhood is using water. A plumber can measure this pressure and, if needed, install or adjust a pressure-reducing valve to protect your plumbing system.
Yes. Donovan Air, Electric & Plumbing services residential homes and many small businesses across Jacksonville and St. Augustine. We handle everything from a single leaky faucet in a kitchen to multiple restroom fixtures with water pressure or corrosion issues.