Missouri Code of State Regulations › Title 10 - DEPARTMENT OF NATURAL RESOURCES › Division 60 - Safe Drinking Water Commission › Chapter 7 - Reporting › Section 10 CSR 60-7.010 - Reporting Requirements

Current through Register Vol. 49, No. 14, July 15, 2024
PURPOSE: This amendment will correct rule citations
				  due to amendments to 10 CSR 60-4.050 and
				  10 CSR
				  60-4.094 and the rescission of
				  10 CSR
				  60-4.090.
(1) General Information. Except where a
				shorter period is specified in this rule, the supplier of water shall report to
				the department the results of any test measurement or analysis, except
				operational analyses required by
				10 CSR
				60-4.080(3) other than those
				specified in sections (4) and (6) of this rule, within the first ten (10) days
				following the month in which the result is received or the first ten (10) days
				following the end of the required monitoring period as stipulated by the
				department, whichever of these is shortest.
(2) Within forty-eight (48) hours a supplier
				of water must report to the department any failure to comply with any drinking
				water regulation, including failure to comply with monitoring requirements,
				except where a shorter period is specified by the department.
(3) A supplier of water is not required to
				report analytical results to the department when a state laboratory performs
				the analysis and reports the results to the department.
(4) Disinfection information must be reported within
				ten (10) days after the end of each month the system serves water to the
				public.
(A) Information that must be reported
				includes:
1. For each day, the lowest
				measurement of residual disinfectant concentration in milligrams per liter
				(mg/L) in water entering the distribution system;
2. The date and duration of each period when
				the residual disinfectant concentration in water entering the distribution
				system fell below five tenths (0.5) mg/L free chlorine or one (1) mg/L
				chloramines and when the department was notified of the occurrence;
				and
3. The following information on
				the samples taken in the distribution system:
A. Number of instances where the residual
				disinfectant concentration is measured;
B. Number of instances where the residual
				disinfectant concentration is not measured but the heterotrophic bacteria plate
				count (HPC) is measured;
C. Number
				of instances where the residual disinfectant concentration is measured but is
				less than two tenths (0.2) mg/L and no HPC is measured;
D. Number of instances where residual
				disinfectant concentration is less than two tenths (0.2) mg/L and where the HPC
				is greater than five hundred per milliliter (HPC > 500/mL);
E. Number of instances where the residual
				disinfectant concentration is not measured and the HPC is greater than five
				hundred per milliliter (HPC > 500/mL); and
F. For the current and previous month the
				system serves water to the public, the value of V in the following formula:
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where:
V = the percentage of time that the disinfectant residual is
				  less than the required residual;
a = the value in subparagraph (4)(A)3.A. of this
				  rule;
b = the value in subparagraph (4)(A)3.B. of this
				  rule;
c = the value in subparagraph (4)(A)3.C. of this
				  rule;
d = the value in subparagraph (4)(A)3.D. of this rule;
				  and
e = the value in subparagraph (4)(A)3.E. of this
				  rule.