A single outdoor spigot dripping at one drop per second wastes over 3,000 gallons of water per year—enough to fill a small swimming pool. Worse, that slow trickle seeps down the exterior wall, saturating the soil against your foundation and potentially causing cracks, mold, or even basement flooding. I learned this the hard way after ignoring a persistent drip for two summers. When I finally pulled off the handle, the brass stem had corroded so badly I had to replace the entire sillcock. That repair cost me $45 in parts and four hours of crawling through a crawlspace I wish I didn't have. But most leaky spigot problems are simpler and cheaper to fix than you think. Here are the ten most effective repairs you can do yourself, ranked from easiest to most involved.
The most common cause of a leaky outdoor spigot is a worn-out rubber washer at the base of the stem. This washer creates a seal when you turn the handle clockwise. Over time, grit and mineral deposits cut grooves into it, allowing water to slip past.
Cost: Under $1. Time: 15 minutes. This works on about 70% of all drip-related leaks. If the drip stops but the handle still feels stiff, the next fix addresses that.
Sometimes the spigot doesn't drip from the spout but leaks around the handle when the water is on. That's a worn packing washer or a loose packing nut. The packing nut compresses a soft ring of graphite or rubber around the stem to prevent water from traveling up and out.
Use an adjustable wrench to tighten the packing nut an eighth of a turn clockwise. If that stops the leak, you're done. If not, remove the handle and packing nut, then replace the packing washer inside the nut. Most outdoor sillcocks use a 1/2-inch or 5/8-inch graphite packing washer. Apply a drop of plumber's silicone grease to the new washer before reassembling to extend its life.
If the stem itself has a deep pitted groove where the packing nut sits, replacing the packing washer won't help. You'll need to replace the stem assembly or the entire sillcock—see fix #9.
If the washer looks fine but the spigot drips intermittently or has a weak stream, sediment or calcium deposits may be preventing the washer from seating fully. This is extremely common in homes with well water or in areas with hard water.
For severe mineral blockages, you might need to replace the entire sillcock. But this flush solves roughly 50% of low-pressure or intermittent drip problems without any parts cost.
Modern outdoor spigots (manufactured after 1991 in most US states) have a built-in vacuum breaker at the spout—a small brass or plastic cap with tiny holes. This prevents contaminated water from siphoning back into your home's drinking water. These vacuum breakers get stuck open by sediment, causing a continuous dribble even when the handle is fully off.
Turn the spigot off and look at the brass cap on the spout. If water is weeping from the small holes on the side, the vacuum breaker needs replacing. Unscrew the cap with a crescent wrench—some are reverse-threaded, so turn clockwise to loosen. Take it to a hardware store and buy the exact size (standard is 3/4-inch).
Cost: $6–$12. Time: 5 minutes. This is often misdiagnosed as a stem leak, so check this before pulling the handle.
A stiff handle doesn't necessarily produce a drip, but it causes you to overtighten the spigot, which bends the washer and creates a leak. Silicone-based plumber's grease (don't use petroleum jelly—it degrades rubber) applied to the stem and packing washer prevents that.
Every fall before your first hard freeze, after you've disconnected all garden hoses. Apply a dap of silicone grease to the stem threads and the packing washer before reassembling. This also makes the handle easier to turn for the next person (or for yourself when your hands are cold).
That drip may not be coming from the spigot at all—it might be leaking from the connection between the hose and the spigot. The small rubber gasket inside the hose connector dries out and cracks. If you see water running down the hose threads or dripping from the brass ferrule, this is likely the issue.
Disconnect the hose and dry both the spigot threads and the hose connector. Reconnect the hose without turning on the water. If the drip disappears, the hose gasket was the culprit. Replace it with a pack of universal rubber gaskets ($3 for 10) at any hardware store.
If the hose itself has a pinhole leak, you'll see water spraying from a spot on the hose body. Discard and replace the hose—don't try to tape it, as pressure will blow the patch off.
If your spigot is leaking because it's cracked from winter freezing, you need a frost-proof sillcock. These have a long brass or stainless steel pipe that extends 6–12 inches into the heated interior of your house. The actual shutoff valve sits inside the warm wall, so the pipe drains completely when turned off.
Cost: $25–$50 for the sillcock, plus rental of a tubing cutter if you don't own one. Time: 1–2 hours for a novice. This is the only permanent fix for freeze-damaged spigots—temporary repairs will fail next winter.
Some newer outdoor spigots use a ball-valve mechanism instead of a compression washer. These spigots have a single lever handle that rotates 90 degrees. If the lever drips or feels loose, a small O-ring inside the body is worn.
Turn off the water. Use an Allen wrench to remove the set screw in the handle, then pull off the handle. Unscrew the cartridge or bonnet (usually a large brass nut). Inside you'll see a slotted brass ball with two O-rings. Replace them with a kit designed for your spigot brand (Arrow, Prier, or Nibco are common). Apply silicone grease before assembling.
Cost: $8–$15 for an O-ring repair kit. Time: 20 minutes. Without the correct O-ring kit, the ball valve will misalign, causing an even worse leak, so get the exact replacement.
If you've replaced the washer and packing nut but the spigot still leaks, the brass stem itself may have a pitted or worn surface that prevents a seal. You can buy a replacement stem assembly specific to your spigot model at a plumbing supply store.
Look for a brand name on the handle or the outer face of the spigot. Common brands include Prier, Mansfield, Woodford, and Nibco. Take a photo of the spigot and its dimensions (distance from wall to handle center). Most hardware stores can match it from the photo.
Cost: $12–$25 for the stem. Time: 30 minutes. This is cheaper and less destructive than replacing the whole sillcock, but it requires finding the exact part.
This isn't a repair for a current leak, but it prevents future leaks from freeze damage. A faucet protector (a foam cover) is not enough in climates where temperatures drop below 20°F. You need to:
This simple one-minute routine eliminates the #1 cause of spigot replacement: freeze-thaw cycles expanding the brass body. In my Minnesota home, I've used this method for eight years and haven't replaced a single sillcock.
Most outdoor spigot leaks are straightforward DIY projects. But three scenarios warrant a professional:
For the other 90% of leaks, the fixes above will save you a $150–$300 service call and let you buy yourself a nice new hose connector with the savings.
Start with the cheapest fix first—replace the rubber washer. If that doesn't work, move to the packing nut, then the vacuum breaker. Write down the brand and model number of your spigot before you start, so if you need to buy a stem assembly or a frost-proof replacement, you can get the right part the first time. Pick an afternoon when the forecast is dry and temperatures are above 50°F; working with cold brass is miserable and makes screws harder to turn. Your water bill—and your foundation—will thank you.
Browse the latest reads across all four sections — published daily.
← Back to BestLifePulse