PURPOSE: This rule protects public water systems and the customer water systems connected to the public water systems from the leaching of lead into the drinking water.

1. (1) This rule applies to all public water systems.

2. (2) For the purpose of this rule, the term lead-free, when used with respect to—

   1. (A) Solder and flux, refers to solders and flux containing not more than two-tenths percent (0.2%) lead;
   2. (B) Pipes and pipe fittings, refers to pipes and pipe fittings containing not more than eight percent (8.0%) lead; and
   3. (C) Plumbing fittings and fixtures intended by the manufacturer to dispense water for human ingestion, refers to fittings and fixtures that are in compliance with standards established in accordance with 42 U.S.C. 300g–6(e).
3. (3) As of January 1, 1989 all materials used in the construction, expansion, modification or improvement of a public water system or customer water system shall be lead free. This section shall not apply to leaded joints necessary for the repair of cast iron pipes.
4. (4) Any customer water system constructed, expanded, modified or repaired after January 1, 1989 that is connected to a public water system, and later is found to contain materials that are not lead-free, shall have the water meter removed or otherwise have the service line severed from the public water system when the supplier of water is so ordered by the appropriate local governmental authority (if one exists) or by the department. The requirements of this section shall not apply to any customer water system previously served by a water system other than a public water system.
5. (5) No ordinance or rule established by a unit of local government or a supplier of water for Recreational Use of Impoundments 10 CSR 60-10

the prohibition of lead pipe, lead pipe fittings and lead solder and flux shall be less stringent than the requirements of this rule.

AUTHORITY: section 640.100, RSMo 2000. Original rule filed June 2, 1988, effective Aug. 31, 1988. Amended: Filed Aug. 14, 2001, effective April 30, 2002. *Original authority: 640.100, RSMo 1939, amended 1978, 1981, 1982, 1988, 1989, 1992, 1993, 1995, 1996, 1998, 1999.