Access and Prepare Main Water Line — Inspect and Repair (or Replace) Water Supply Lines
Part of project
Fix a Dripping Bathroom Faucet: A Step-by-Step Guide · Step 3 of 4
In this video
Excavate the area around the main water supply line to gain access. Identify and cut out any problematic piping, such as the old polybutylene pipe mentioned. Install a new section of copper pipe, using appropriate transition fittings (like the stainless steel clamp connector shown) to connect to the existing underground line. Reduce the pipe diameter from 1 inch to 3/4 inch using a reducer fitting to match the new plumbing. Solder the new copper connections.
Goal: Tap into the main water supply
- Polybutylene piping is known to be prone to failure and should be replaced whenever encountered.
Used in this video
- Shovel — Excavating the trench to access the main water line.
- Pipe cutting tool — Cutting the existing polybutylene pipe and the new copper pipe.
- Soldering Torch — Heating the copper pipe and fittings to melt the solder and create a permanent joint.
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FAQs
Why is a basin wrench specifically recommended for this project, and are there alternatives?
A basin wrench is essential because its long shaft and swiveling jaw allow you to reach and loosen nuts in cramped spaces under the sink, particularly those securing the faucet. While other wrenches might fit some nuts, a basin wrench is designed for the tight angles and often inaccessible positions encountered when working on faucets.
What are the common issues to watch for when reconnecting the water supply lines to avoid new leaks?
A common mistake is not tightening the connections enough, leading to slow drips, or over-tightening, which can strip threads or damage washers. Ensure the supply lines are hand-tightened, then use a wrench for a quarter to a half turn more. Always check for leaks immediately after turning the water back on and tighten slightly if needed.
What safety precautions should I take beyond just turning off the water supply?
In addition to shutting off the water, place the Unger 6 Gal. Heavy-Duty Plastic Bucket DB02 directly under your workspace to catch any residual water. Wear safety glasses to protect from drips or debris, and consider gloves for a better grip and to protect your hands from grime under the sink, especially in tight, dirty spaces.
My faucet is dripping from the spout, but this guide focuses on supply lines. Will this project fix that type of drip?
This specific guide primarily addresses leaks originating from the water supply lines or their connections to the faucet tailpieces. If your faucet is dripping from the spout itself, the issue is likely with internal components like worn-out O-rings, cartridges, or washers, which would require disassembling the faucet's body, not just inspecting the supply lines.
Access and Prepare Main Water Line — Inspect and Repair (or Replace) Water Supply Lines
Part of project
Fix a Dripping Bathroom Faucet: A Step-by-Step Guide · Step 3 of 4
In this video
Excavate the area around the main water supply line to gain access. Identify and cut out any problematic piping, such as the old polybutylene pipe mentioned. Install a new section of copper pipe, using appropriate transition fittings (like the stainless steel clamp connector shown) to connect to the existing underground line. Reduce the pipe diameter from 1 inch to 3/4 inch using a reducer fitting to match the new plumbing. Solder the new copper connections.
Goal: Tap into the main water supply
- Polybutylene piping is known to be prone to failure and should be replaced whenever encountered.
Used in this video
- Shovel — Excavating the trench to access the main water line.
- Pipe cutting tool — Cutting the existing polybutylene pipe and the new copper pipe.
- Soldering Torch — Heating the copper pipe and fittings to melt the solder and create a permanent joint.
Frequently Asked Questions
Why is a basin wrench specifically recommended for this project, and are there alternatives?
A basin wrench is essential because its long shaft and swiveling jaw allow you to reach and loosen nuts in cramped spaces under the sink, particularly those securing the faucet. While other wrenches might fit some nuts, a basin wrench is designed for the tight angles and often inaccessible positions encountered when working on faucets.
What are the common issues to watch for when reconnecting the water supply lines to avoid new leaks?
A common mistake is not tightening the connections enough, leading to slow drips, or over-tightening, which can strip threads or damage washers. Ensure the supply lines are hand-tightened, then use a wrench for a quarter to a half turn more. Always check for leaks immediately after turning the water back on and tighten slightly if needed.
What safety precautions should I take beyond just turning off the water supply?
In addition to shutting off the water, place the Unger 6 Gal. Heavy-Duty Plastic Bucket DB02 directly under your workspace to catch any residual water. Wear safety glasses to protect from drips or debris, and consider gloves for a better grip and to protect your hands from grime under the sink, especially in tight, dirty spaces.
My faucet is dripping from the spout, but this guide focuses on supply lines. Will this project fix that type of drip?
This specific guide primarily addresses leaks originating from the water supply lines or their connections to the faucet tailpieces. If your faucet is dripping from the spout itself, the issue is likely with internal components like worn-out O-rings, cartridges, or washers, which would require disassembling the faucet's body, not just inspecting the supply lines.