# Water Main — Utility Construction Glossary

Primary pipelines in a water distribution system that transport treated water from treatment plants or storage facilities to service areas.

## Frequently asked questions

### What materials are used for water mains?

Common materials include ductile iron, PVC, HDPE, and concrete cylinder pipe, selected based on pressure requirements and site conditions.

### How are water mains maintained?

Maintenance includes leak detection, pressure monitoring, valve exercising, and periodic cleaning and inspection.


## Related terms

- [hydrostatic-testing](https://www.dunninfrastructuregroup.com/glossary/hydrostatic-testing)
- [thrust-restraint](https://www.dunninfrastructuregroup.com/glossary/thrust-restraint)
- [valve](https://www.dunninfrastructuregroup.com/glossary/valve)

Water mains are critical infrastructure components that require proper design, installation, and maintenance.

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Source: https://www.dunninfrastructuregroup.com/glossary/water-main
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