Kitchen Sink Sprayer Leaking
A kitchen-sink side sprayer can leak at the handle, hose, quick-connect fitting, or inside the faucet when its diverter fails. The leak may appear only when you squeeze the trigger, or water may collect beneath the cabinet even while the sprayer sits unused. Start by protecting the cabinet and identifying when the leak happens. Do not reach into standing water around an outlet, garbage disposal, dishwasher connection, or extension cord. Shut off the faucet's hot and cold supply valves if water continues after use or the cabinet is getting wet. A sprayer hose is usually inexpensive, but a leak from the faucet body may require a model-specific diverter or faucet repair. Replacing random seals without locating the leak often wastes time and can make a loose connection worse.
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Common Symptoms
- Water sprays from the hand-sprayer head, trigger, or hose when used
- The cabinet floor gets wet after using the side sprayer
- Water comes from the faucet spout and sprayer at the same time
- The sprayer has weak flow, pulsing, or a stiff trigger before leaking
- A quick-connect fitting or hose under the sink drips after the faucet is turned on
Most Likely Causes
- 1
Cracked Sprayer Hose or Head
Aged hose material, a split near the pull-out path, or a worn trigger seal can leak only when water pressure reaches the sprayer.
- 2
Loose or Damaged Connection
A threaded or quick-connect fitting can drip if its retaining clip, gasket, or connection is worn or not seated correctly.
- 3
Failed Faucet Diverter
A diverter stuck between positions can send water to both outlets, lower sprayer pressure, or leak inside the faucet body.
- 4
Water Tracking From Another Fixture
A faucet-base leak, dishwasher hose, drain, or disposal connection can mimic a sprayer problem inside the cabinet.
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Quick DIY Checks
WATER AND ELECTRICITY WARNING: Do not work in a wet under-sink cabinet near an outlet, garbage disposal, dishwasher wiring, or extension cord. Dry the area and disconnect power only if you can do so without touching water.
STOP AND CALL A PLUMBER for a leak that cannot be shut off, water near electrical equipment, a damaged shutoff valve, a cracked faucet body, or cabinet and floor damage that continues after the faucet is off.
- 1Clear the cabinet, dry the area, and keep electrical cords and the garbage-disposal switch area dry. Place a towel under the plumbing and use a flashlight while another person briefly runs the faucet or sprayer.
- 2Identify whether water begins at the sprayer head, along the hose, at a connection, or from the faucet body. Do not pull hard on a hose, pry a quick-connect clip, or use pliers on plastic fittings.
- 3If a connection visibly drips, close the hot and cold stop valves under the sink if they turn easily. Do not force corroded valves; use the faucet only after the leak source is safely controlled.
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Repair vs Replace
Most sprayer leaks are limited to a hose, head, connector, or diverter and are worth repairing. Replace the faucet when its body is cracked, parts are unavailable, corrosion is extensive, or multiple leaks make the repair cost approach a quality replacement.
Est. Repair Cost
$25–$250 for a hose, sprayer head, diverter, or plumber repair
Est. Replacement Cost
$180–$700+ for a new faucet installed
Recommended Tools & Parts
- Buy on Amazon →
Model-compatible sprayer hose or head
A faucet-specific replacement selected by connection type and manufacturer part number.
$20–$95
- Buy on Amazon →
Faucet diverter or connection kit
A model-specific repair part used after the leak is confirmed inside the faucet or at a quick-connect fitting.
$15–$80
Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.
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Related Repair Guides
This section combines editorial `relatedSlugs` from the article source with metadata-based matches so each guide links deeper into the repair library.
Kitchen Faucet Sprayer Not Working
A weak or dead kitchen sprayer is often caused by a clogged spray head, kinked hose, or failed diverter. Shut off water before disconnecting anything.
Read guide →Kitchen Faucet Sprayer Loses Pressure? Safe Checks for a Weak Side Sprayer
If the main faucet still flows normally, a weak side sprayer is often a clogged spray head, kinked hose, or sticking diverter.
Read guide →Keep Exploring
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Frequently Asked Questions
- Why does my faucet leak only when I use the sprayer?
- The sprayer hose, trigger head, connection, or diverter only sees full pressure when the sprayer is activated. Dry the cabinet and observe the exact leak point briefly rather than guessing.
- Can I wrap a leaking sprayer hose with tape?
- No. Tape is not a reliable pressurized-water repair and can hide damage until the cabinet floods. Shut off the supply if needed and replace the confirmed hose or have it repaired.
Source Notes
- Manufacturer faucet parts-diagram conventions and residential plumbing safety practices informed this guide, reviewed for publication on July 27, 2026.