Water Main Repair & Replacement in Chicago, IL

Water main breaks can be sudden and catastrophic or slow and insidious. Recognizing the signs early can save you thousands in water damage and city water bills.

Obvious Signs (Call 833-758-6911 Immediately)

• Water bubbling up from the parkway, yard, or street — a pressurized break is pushing water to the surface
• Sudden total loss of water pressure throughout the home
• Water flowing into the basement from the wall where the service line enters
• A constant sound of running water at the water meter when no fixtures are in use
• Soft, muddy, or sunken spots in the yard that weren't there before

Subtle Signs (Schedule a Diagnostic Visit)

• Unexplained water bill increase of 30% or more without a usage change
• Water meter spinning even when all fixtures are shut off
• Rust-colored or discolored water from faucets (may indicate a corroded galvanized service line)
• Low pressure during peak demand only (may indicate a restricted or partially collapsed line)
• Patches of unusually green, lush grass along the suspected line path
• Water pooling at the basement floor near the meter or main shut-off

What to Do Right Now

1. Shut the water off at the main — the main shut-off is typically on the front wall of the basement near where the line enters the house, often just past the water meter
2. If you can't shut it off inside, the B-box / curb stop is in the parkway between the sidewalk and street — this requires a city curb-stop key to operate
3. Call us at 833-758-6911 for emergency dispatch
4. Take photos of any visible water damage for insurance documentation
5. Move valuables off the basement floor and unplug any electrical items in wet areas

One of the most misunderstood issues in Chicago water main repair is who owns what — and therefore who pays for repair.

The City of Chicago Owns

• The water main running down the center of the street (typically 8" – 12" cast iron or ductile iron)
• The service tap where your line connects to the main
• The B-box / curb stop — the shut-off valve at the property line (usually in the parkway)

The Homeowner Owns

• The service line from the curb stop to the house — this is typically 1" for residential, 1.5" or 2" for larger homes, up to 4" for commercial
• The fitting where the line enters the foundation
• The main shut-off valve inside the home
• The water meter setter (though the meter itself is city property)

What This Means for Repairs

If a break occurs between the curb stop and your house, it's your responsibility to pay for repair, including excavating the parkway (with a DWM permit), replacing the damaged section, and restoring the surface. Expect $500 – $12,000 depending on scope.

If a break occurs between the street main and the curb stop, it's the city's responsibility — call 311 and DWM will dispatch a crew. However, in practice, DWM often requires the homeowner to have a licensed plumber on-site to certify the issue before they'll dig.

Lead Service Line Replacement (LSLR) Program

If your service line is lead or galvanized steel with a lead gooseneck, you may qualify for free replacement through the City of Chicago's Lead Service Line Replacement (LSLR) program. The city covers the public-side replacement (street to curb) and the private-side replacement (curb to house) for qualifying owner-occupied homes. We help homeowners apply and coordinate the replacement. See the Chicago Water Department LSLR page or call 833-758-6911 to confirm eligibility.

Not every water main issue needs full replacement. We help you weigh cost vs. long-term value.

Spot Repair ($500 – $2,500)

Appropriate when:

• The line is copper (Type K or L) in otherwise good condition
• A single identified leak at a fitting, pinhole, or freeze damage point
• The line is less than 30 years old
• Only a small area of the parkway or basement floor is disturbed

Spot repairs involve excavating just the damaged section, cutting out the bad 1 – 3 feet of pipe, installing a repair coupling or short replacement section, pressure-testing, and backfilling.

Full Replacement ($3,500 – $12,000)

Recommended when:

• The line is lead (regardless of condition — lead should always be removed for health reasons)
• The line is galvanized steel (which corrodes from the inside and will fail again soon)
• The line is Orangeburg or old brass (prone to cracking)
• You've had multiple breaks in the past 5 years
• The line is undersized for your fixture count (adding bathrooms, irrigation, or a pool)
• A sewer camera-style locate shows the line is corroded or scaled along most of its length

Full replacements involve trenching from the curb stop to the house, pulling the old line, installing new copper or HDPE, pressure testing, inspection, and restoration.

Trenchless Replacement (when site conditions allow)

For yards with mature trees, hardscaping, or difficult access, we offer pipe bursting replacement — pulling a new HDPE line through the path of the old line without full trench excavation. This saves landscape restoration costs but adds $1,500 – $3,500 to the base price.

Any water main repair that enters the parkway or crosses under public right-of-way in Chicago requires permits from the Department of Water Management (DWM) and the Chicago Department of Transportation (CDOT). Unlicensed or unpermitted work can result in fines of $500 – $5,000, forced re-do of the work, and complications when selling the home.

What We Handle

• DWM Plumbing Permit (for service line work)
• CDOT Street Opening Permit (if we need to cut the street or sidewalk)
• Traffic control plan (if the work requires blocking a lane)
• Tree protection plan (if excavating near parkway trees)
• Final inspection by DWM before backfill
• Street and sidewalk restoration to city spec (concrete, asphalt patch, sod replacement)

Typical Permit Timeline

• Emergency repair — same-day permit authorization under emergency-service rules
• Non-emergency planned replacement — 3 – 10 business day permit review

Permit fees are typically $150 – $600 for residential service line work and are included in our written project quote. We handle all scheduling with DWM inspectors and stay on-site through final sign-off.

A frozen water main is common in Chicago during prolonged deep freezes (sustained temperatures below -5°F for 3+ days). The service line between the curb stop and your home sits at 4 – 6 feet below grade in Chicago — normally below the frost line — but frost can penetrate deeper during extreme winters, especially if:

• The line runs shallow (old homes sometimes have 3 – 4 foot burial depth)
• A sidewalk or driveway above the line is cleared of snow (removing the insulating layer)
• The line runs under an unheated porch, garage, or crawl space

Signs Your Main Is Frozen

• No water at any fixture in the house (if you have water at hose bibs outside but nothing inside, the problem is inside; if nothing anywhere, the main is likely frozen)
• Pressure is zero at the main
• Pipe is frosted over at the point where it enters the basement

What We Do

1. Diagnose with a thermal camera to confirm the freeze point
2. Apply low-amperage electrical thawing (safe method for copper lines) or hot water flushing for longer runs
3. Monitor for cracks — frozen pipes often split from expansion, and leaks appear only after thawing
4. Recommend permanent fixes if this is recurring — insulation, heat tape, or a deeper burial

Typical frozen main thaw cost: $400 – $1,200 depending on line length and method. If the line cracks from the freeze, repair costs scale to the normal spot-repair or replacement range.

See our frozen pipe repair page for interior pipe freeze info.