Skip to main content
True Trade Path

Diagnostic guide

Outdoor Faucet Leaking

A dripping hose bib wastes water and can freeze-damage pipes — replace washers, packing, or the frost-free stem before winter.

System
Plumbing
Causes covered
7
You can check
4 without a technician

Stop and read this first

  • Shut interior isolation valve before winter — leaving bib charged risks freeze burst.
  • Use vacuum-breaker bibs where required by code to prevent back-siphon.

Work through these in order

Ordered from most to least likely. Working top down means you rule out the cheap, common causes before paying anyone to look at the expensive, rare ones.

  1. Worn washer on stem

    CommonYou can check
    How to check
    Drip from spout when valve is closed.
    The fix
    Replace washer after shutting indoor supply ($5 DIY).

  2. Packing nut leak around handle

    CommonYou can check
    How to check
    Water weeps up the stem when open.
    The fix
    Tighten packing nut or repack ($5).

  3. Cracked vacuum breaker cap

    CommonYou can check
    How to check
    Spray from top of anti-siphon bib.
    The fix
    Replace cap or entire bib ($25 to $80).

  4. Split pipe from freeze

    CommonNeeds a pro
    How to check
    Leak inside wall after hard freeze. Bib may look fine.
    The fix
    Shut indoor valve and replace frost-free sillcock ($150 to $350).

  5. Loose packing gland on older gate-style bib

    PossibleYou can check
    How to check
    Cannot fully shut off.
    The fix
    Rebuild or replace bib ($20 to $150).

  6. High pressure hammering bib

    PossibleNeeds a pro
    How to check
    Intermittent spray when other fixtures close.
    The fix
    Install or adjust PRV ($250 to $500).

  7. Corroded body beyond repair

    UncommonNeeds a pro
    How to check
    Pitting and leak at casting.
    The fix
    Replace with frost-free model ($150 to $400 installed).

Direct answer

Hose bib drips are usually washers or packing; freeze splits need frost-free sillcock replacement before winter.

Severity and urgency

Fix within weeks

Ice burst can flood interior wall.

Cost of ignoring it

Interior damage $1,000–$5,000 from freeze split.

How a pro will diagnose it

Replace sillcock or rebuild stem ($150–$400).

Prevention and maintenance

  • Shut indoor valve in winter
  • Use frost-free bibs
  • Remove hoses in fall
  • Replace washers every few years
  • Insulate in crawl

For trade owners

Pricing this job as a contractor?

Homeowners see national ranges on this page. If you are building the estimate, use the same scope assumptions — then price to burdened labor, overhead recovery and a real margin.

We never sell leads. Read the promise.

Find a licensed pro

When you are ready to hire for outdoor faucet leaking, start with licence verification — not with whoever answered first.

No paid placement

Rankings are never sold. Order reflects verification depth and relevance, not payment.
Browse verified listingsHow to hire plumberFind a pro by symptomCheck a quote

Verify any licence yourself before signing: state licensing hub.

Common questions

Could worn washer on stem be causing this?
Drip from spout when valve is closed. Replace washer after shutting indoor supply ($5 DIY).
Could packing nut leak around handle be causing this?
Water weeps up the stem when open. Tighten packing nut or repack ($5).
Could cracked vacuum breaker cap be causing this?
Spray from top of anti-siphon bib. Replace cap or entire bib ($25 to $80).
Could split pipe from freeze be causing this?
Leak inside wall after hard freeze. Bib may look fine. Shut indoor valve and replace frost-free sillcock ($150 to $350).
What is the most common cause of outdoor faucet leak?
Shut indoor supply first.
Can I fix outdoor faucet leak myself?
Some checks are DIY-safe (shutoffs, filters, simple adjustments). Licensed plumber work is required when gas, sewer, refrigerant, or main lines are involved.
How much does professional repair for outdoor faucet leak cost?
Washer DIY $5; sillcock $150–$350.
How urgent is outdoor faucet leak?
Water inside wall after freeze — urgent.
Should I shut off water or power for outdoor faucet leak?
Shut off the local supply or breaker when leaks, flooding, sparks, or gas odor are present. If unsure, stop using the system and call a pro.
Will outdoor faucet leak damage my home if I wait?
Moisture-related issues can rot framing and grow mold within 48 hours. Mechanical issues often worsen — seized pumps, cracked heat exchangers, or compressor damage cost far more when delayed.
What should I tell the plumber on the phone?
Describe when it started, what changed (weather, remodel, new appliance), what you already tried, and whether multiple fixtures or zones are affected.
Does homeowners insurance cover outdoor faucet leak?
Sudden pipe bursts are often covered; slow leaks, maintenance neglect, and sewer backups frequently are not. Document with photos and read your policy endorsements.
How do I know the quote for outdoor faucet leak is fair?
Get two written quotes with scope, parts, warranty, and permit line items. Compare to regional mid-range pricing — not the cheapest emergency rate.
How can I prevent outdoor faucet leak from coming back?
Follow the prevention steps on this page: maintenance schedules, avoiding grease and wipes in drains, filter changes, and annual tune-ups where applicable.

Once you know what it is

Step one

Know what it should cost

Get the range before you call, so the first number you hear is not the only number you have.

Step two

Decide repair or replace

On equipment near end of life, the repair is usually the first of several.

Step three

Check the quote

Compare against the typical range and confirm the terms before you sign.

Whole-House Repiping cost guideRepair or replace calculatorEstimate repair costAnalyze a quote

What the fix costs

Tools for this decision

Other symptoms