Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 590 - WATERWORKS REGULATIONS › Section 12VAC5-590-375 - Lead and copper monitoring

Current through Register Vol. 40, No. 24, July 15, 2024
A.
				The owner of a community waterworks or a NTNC shall monitor for lead and copper
				in tap water (subsection B of this section), water quality (corrosion)
				parameters in the distribution system and at entry points (subsection C of this
				section), and lead and copper in water supplies (subsection D of this
				section).
B. Monitoring
				requirements for lead and copper in tap water.
1. Sample site location.
a. By the date determined by the department
				for commencement of monitoring under subdivision B 4 a of this section, the
				owner shall complete a materials evaluation of the distribution system to
				identify a pool of targeted sampling sites that meets the requirements of this
				subdivision, and that is sufficiently large to ensure that the owner can
				collect the number of lead and copper tap samples required in subdivision B 3
				of this section. All sites from which first-draw samples are collected shall be
				selected from this pool of targeted sampling sites. Sampling sites may not
				include faucets that have POU devices or POE devices designed to remove
				inorganic contaminants.
b. When the
				distribution system evaluation required in subdivision B 1 a of this section is
				insufficient to locate the requisite number of lead and copper sampling sites
				that meet the targeting criteria of this section, the owner shall review the
				sources of information listed in subdivisions B 1 b (1), B 1 b (2), and B 1 b
				(3) of this section to identify a sufficient number of sampling sites. In
				addition, the owner shall seek to collect such information where possible in
				the course of its normal operations (e.g., checking service line materials when
				reading water meters or performing maintenance activities):
(1) All plumbing codes, permits, and records
				in the files of the building department that indicate the plumbing materials
				that are installed within publicly and privately owned structures connected to
				the distribution system;
(2) All
				inspections and records of the distribution system that indicate the material
				composition of the service connections that connect a structure to the
				distribution system; and
(3) All
				existing water quality information, which includes the results of all prior
				analyses of the waterworks or individual structures connected to the
				waterworks, indicating locations that may be particularly susceptible to high
				lead or copper concentrations.
c. The sampling sites selected for a
				community waterworks' sampling pool (Tier 1 sampling sites) shall consist of
				single-family structures that:
(1) Contain
				copper pipes with lead solder installed between January 1983 and April 1986 or
				contain lead pipes; or
(2) Are
				served by a lead service line.
When multiple-family residences comprise at least 20% of the
				  structures served by a waterworks, the owner may include these types of
				  structures in the sampling pool.
d. The owner of a community waterworks with
				insufficient Tier 1 sampling sites shall complete the sampling pool with Tier 2
				sampling sites consisting of buildings, including multiple-family residences
				that:
(1) Contain copper pipes with lead
				solder installed between January 1983 and April 1986 or contain lead pipes;
				or
(2) Are served by a lead service
				line.
e. The owner of a
				community waterworks with insufficient Tier 1 and Tier 2 sampling sites shall
				complete the sampling pool with Tier 3 sampling sites, consisting of single
				family structures that contain copper pipes with lead solder installed before
				1983. The owner of a community waterworks with insufficient Tier 1, Tier 2, and
				Tier 3 sampling sites shall complete the sampling pool with representative
				sites throughout the distribution system. For the purpose of this subdivision,
				a representative site is a site in which the plumbing materials used at that
				site would be commonly found at other sites served by the waterworks.
f. The sampling sites selected for a NTNC
				(Tier 1 sampling sites) shall consist of buildings that:
(1) Contain copper pipes with lead solder
				installed between January 1983 and April 1986 or contain lead pipes;
				or
(2) Are served by a lead service
				line.
g. The owner of a
				NTNC with insufficient Tier 1 sites that meet the targeting criteria in
				subdivision B 1 f of this section shall complete the sampling pool with
				sampling sites that contain copper pipes with lead solder installed before
				1983. If additional sites are needed to complete the sampling pool, the owner
				of a NTNC shall use representative sites throughout the distribution system.
				For the purpose of this subdivision, a representative site is a site in which
				the plumbing materials used at that site would be commonly found at other sites
				served by the waterworks.
h. The
				owner of a waterworks whose distribution system contains lead service lines
				shall draw 50% of the samples the owner collects during each monitoring period
				from sites that contain lead pipes, or copper pipes with lead solder, and 50%
				of the samples the owner collects from sites served by a lead service line. The
				owner who cannot identify a sufficient number of sampling sites served by a
				lead service line shall collect first-draw tap samples from all of the sites
				identified as being served by these lines.