Ohio Administrative Code|Rule 3745-81-80 | Control of lead and copper - general requirements.

                                                
(A) Applicability. The requirements of
		  rules 3745-81-80 to 3745-81-90 of the Administrative Code are based on the
		  national primary drinking water regulations for lead and copper. Unless
		  otherwise indicated, each of the provisions of these rules applies to community
		  water systems and nontransient noncommunity water systems (hereinafter referred
		  to as "water systems" or "systems").
(B) Scope. These regulations establish a
		  treatment technique that includes requirements for corrosion control treatment,
		  source water treatment, lead service line replacement, and public education.
		  Lead and copper action levels, measured in samples collected at consumers'
		  taps, may trigger these requirements.
(C) Lead and copper action levels, and
		  lead threshold levels.
(1) The lead action level
			 is exceeded if, at any time during the monitoring period, the concentration of
			 lead in more than ten per cent of tap water samples collected during any
			 monitoring period conducted in accordance with rule 3745-81-86 of the
			 Administrative Code is greater than 0.015 milligram per liter, i.e., if the
			 ninetieth percentile lead level is greater than 0.015 milligram per
			 liter.
(2) The copper action
			 level is exceeded if, at any time during the monitoring period, the
			 concentration of copper in more than ten percent of tap water samples collected
			 during any monitoring period conducted in accordance with rule 3745-81-86 of
			 the Administrative Code is greater than 1.3 milligrams per liter, i.e., if the
			 ninetieth percentile copper level is greater than 1.3 milligrams per
			 liter.
(3) The ninetieth
			 percentile lead and copper levels shall be computed as follows:
(a) The analytical results of all lead or copper samples taken
				during a monitoring period shall be placed in ascending order from the sample
				with the lowest concentration to the sample with the highest concentration.
				Each analytical result shall be assigned a consecutive whole number, beginning
				with the number one for the sample with the lowest contaminant level. The
				number assigned to the sample with the highest contaminant level shall be that
				of the total number of samples analyzed.
(i) If less than the
				  minimum number of samples required by rule 3745-81-86 of the Administrative
				  Code have been taken, the minimum number of samples shall be used in
				  calculations.
(ii) If greater than or
				  equal to the minimum number of samples required by rule 3745-81-86 of the
				  Administrative Code have been taken, the total number of samples shall be used
				  in calculations.
(b) The number of samples taken during the monitoring period
				shall be multiplied by 0.9.
(c) The contaminant concentration in the numbered sample with the
				number yielded by the calculation in paragraph (C)(3)(b) of this rule is the
				ninetieth percentile contaminant level.
If the result of the calculation in paragraph (C)(3)(b) of this
				rule is not a whole number, the concentrations for the samples above and below
				the result shall be iterated to yield the ninetieth percentile contaminant
				level.
(d) For public water systems that monitor five samples per
				monitoring period, the ninetieth percentile is computed by taking the average
				for the two samples with highest concentrations.
(e) For public water systems that have been allowed by the
				director to collect fewer than five samples under rule 3745-81-86 of the
				Administrative Code, the sample result with the highest concentration is
				considered the ninetieth percentile value.
(4) The lead threshold
			 level is exceeded at 0.015 milligrams per liter concentration of lead in an
			 individual tap water sample.
(D) Corrosion control treatment
		  requirements.
(1) All water systems
			 shall install and operate optimal corrosion control treatment as defined in
			 rule 3745-81-01 of the Administrative Code.
(2) Any water system that
			 complies with the applicable corrosion control treatment requirements approved
			 by the director under rules 3745-81-81 and 3745-81-82 of the Administrative
			 Code shall be deemed in compliance with the treatment requirement contained in
			 paragraph (D)(1) of this rule.
(E) Source water treatment requirements.
		  Any system exceeding the lead or copper action level shall implement all
		  applicable source water treatment requirements specified by the director under
		  rule 3745-81-83 of the Administrative Code.
(F) Lead service line requirements. Any
		  system that replaces lead service lines, replaces water mains in areas that
		  contain or are likely to contain lead service lines or exceeds the lead action
		  level after implementation of applicable corrosion control and source water
		  treatment requirements shall complete the requirements contained in rule
		  3745-81-84 of the Administrative Code.
(G) Consumer notification, lead public
		  notification and public education requirements.
(1) Consumer
			 notification. Pursuant to rule 3745-81-85 of the Administrative Code, the owner
			 or operator of a public water system shall provide a consumer notice of lead
			 tap water monitoring results to persons served at the sites (taps) that are
			 sampled.
(2) Lead public
			 notification. Any system with results of lead tap water monitoring that show an
			 exceedance of the lead action level shall provide lead public notification in
			 accordance with rule 3745-81-85 of the Administrative Code.
(3) Public education. Any system
			 exceeding the lead action level shall implement the public education
			 requirements contained in rule 3745-81-85 of the Administrative
			 Code.
(H) Monitoring and analytical
		  requirements. Monitoring of tap water for lead and copper, monitoring for water
		  quality parameters, monitoring of source water at each entry point to the
		  distribution system for lead and copper, and analyses of these monitoring
		  samples shall be completed in compliance with rules 3745-81-86 to 3745-81-89 of
		  the Administrative Code and Chapter 3745-89 (laboratory approval) of the
		  Administrative Code.
(I) Reporting requirements. Public water
		  systems shall report to the director any information required by the treatment
		  provisions of rules 3745-81-80 to 3745-81-90 of the Administrative
		  Code.
(J) Recordkeeping requirements. Public
		  water systems shall maintain records in accordance with rule 3745-81-90 of the
		  Administrative Code.
(K) Violation of primary drinking water
		  regulations. Failure to comply with the applicable requirements of rules
		  3745-81-80 to 3745-81-90 of the Administrative Code, including requirements
		  established by the director pursuant to these provisions, shall constitute a
		  violation of the Administrative Code primary drinking water regulations for
		  lead or copper.