---
kind: "section"
citation: "49 C.F.R. § 192.373"
title: "49"
number: "192.373"
heading: "Service lines: Cast iron and ductile iron."
url: "https://uscodex.org/cfr/49/192.373"
---

# §192.373. Service lines: Cast iron and ductile iron.

- (a) Cast or ductile iron pipe less than 6 inches (152 millimeters) in diameter may not be installed for service lines.
- (b) If cast iron pipe or ductile iron pipe is installed for use as a service line, the part of the service line which extends through the building wall must be of steel pipe.
- (c) A cast iron or ductile iron service line may not be installed in unstable soil or under a building.

## Notes

### Amendments

[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-85, 63 FR 37503, July 13, 1998]

### Authority

Authority: 30 U.S.C. 185(w)(3), 49 U.S.C. 5103, 60101 et. seq., and 49 CFR 1.97.

### Source

Source: 35 FR 13257, Aug. 19, 1970, unless otherwise noted.

### Amendments

[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-85, 63 FR 37503, July 13, 1998]