In Tacoma, Washington, your water line typically connects to the municipal supply at the street, running underground to your home’s water meter and plumbing system.
Understanding how your water line connects to your Tacoma home helps you maintain your plumbing system and comply with local regulations. The connection involves several key components from the city main to your home’s internal plumbing.
Tacoma Water Service Connection Basics
In Tacoma, your home’s water connection starts at the city water main and runs through several critical components:
- City water main (typically under the street)
- Service line to your property
- Water meter (usually near property line)
- Private water line to your home
- Main shutoff valve
- Home plumbing system
City Requirements for Water Line Installation
Tacoma has specific requirements for water service connections:
| Requirement | Details |
|---|---|
| Inspection | Entire length must be inspected before backfilling |
| Pipe Materials | Approved materials include copper, PEX, and polyethylene |
| Depth | Minimum 2 feet burial depth throughout |
| Pressure Regulation | Required if static pressure exceeds 80 psi |
Key Components of Your Water Connection
Water Meter
The city-owned water meter measures your water usage. It’s typically located near your property line in a meter box. Tacoma Water maintains this component, but homeowners are responsible for protecting it from damage.
Service Line
This pipe runs from the meter to your home. In Tacoma, homeowners are responsible for maintaining this portion of the system. Common materials include:
- Copper (Type L or K)
- Polyethylene (PE3408)
- PEX tubing
Shutoff Valves
Tacoma requires two shutoff valves:
- Within 2 feet of the building foundation
- An interior shutoff in an accessible location
For lines over 100 feet, an additional shutoff is required within 5 feet of the meter.
Installation and Repair Requirements
Tacoma has specific rules for water line work:
- Permits required for all new installations and repairs
- Inspections must be scheduled 24 hours in advance
- Pressure testing required (15 minutes for residential, 30 minutes for commercial)
- Tracer wire required for non-metallic pipes
For repairs, Tacoma offers an ePermit Water Connection Repair (ERWTR) for residential properties.
Backflow Prevention and Water Quality
Tacoma requires backflow prevention devices for:
- Irrigation systems
- Fire protection systems
- Pools and spas
- Any branch connection not for domestic use
The Tacoma Public Utilities provides water quality information and conservation tips to help residents manage their water usage.
Utility Separation Requirements
Tacoma mandates specific separations between utilities:
- 10 feet horizontal and 18 inches vertical from sanitary sewers
- 5 feet horizontal and 6 inches vertical from other utilities
Conservation and Maintenance Tips
Tacoma Water encourages conservation to reduce peak summer demand by 6.65% per person. Simple steps include:
- Fixing leaky faucets and pipes promptly
- Installing water-efficient fixtures
- Watering lawns during cooler hours
For plumbing maintenance, consider quality tools if doing work yourself, or hire a licensed professional.
Pressure Regulation
If your home’s water pressure exceeds 80 psi, Tacoma requires installation of a pressure regulator. This protects your plumbing system from damage. High pressure can cause:
- Pipe leaks
- Fixture damage
- Increased water waste
Special Considerations
Fire Protection Systems
Fire sprinkler systems have different requirements:
- Separate permit from Tacoma Fire Department
- Contractors must have special licensing
- Different inspection process
Commercial Buildings
Commercial properties may be subject to Washington’s Clean Buildings law, which includes water efficiency requirements. Tacoma Public Utilities offers resources to help businesses comply.
Common Water Line Issues in Tacoma
Local homeowners frequently encounter:
- Freezing pipes in winter
- Mineral buildup in older pipes
- Tree root intrusion
- Corrosion in older metal pipes
For related home temperature concerns, see our guide on home temperature regulation devices.
