Mo. Code Regs. Ann. tit. 10, § 60-4.080 – Operational Monitoring

PURPOSE: This rule establishes criteria for operation and operational monitoring.

Editor’s Note: The following material is incorporated into this rule by reference: 1) Methods for Chemical Analysis of Water and Wastes, Revised March 1983 (Springfield VA: U.S. Department of Commerce, 1983); 2) Standard Methods for the Examination of Water and Wastewater, 18th Edition (Baltimore, MD, Victor Graphics, Inc., 1992). In accordance with section 536.013(4), RSMo, the full text of material incorporated by reference will be made available to any interested person at the Office of the Secretary of State and the headquarters of the adopting state agency.

(1) Public water systems utilizing any treatment process must perform sufficient analyses to maintain control of the treatment process, using methods as required by 10 CSR 60-5.010 and as acceptable to the department.
(2) Automatic instrumentation may be used if properly installed, maintained and periodically calibrated against known standards prepared in accordance with Standard Methods for the Examination of Water and Wastewater 1992, American Public Health Association, 18th edition, New York, NY or Methods for Chemical Analysis of Water and Wastes, Environmental Monitoring Support Laboratory, USEPA, Cincinnati, OH 45268, EPA- 600/4-79-020.
(3) Sufficient analyses must be done to assure control of water quality, the following requirements notwithstanding. Continuous monitoring and recording may be used for any operational analysis instead of grab sampling provided that the requirements of section (2) are met. For those analyses where continuous monitoring is required, if there is a failure in the continuous monitoring equipment, grab sampling every two (2) hours of operation may be conducted in lieu of continuous monitoring but for no more than five (5) working days following the failure of the equipment. Applicable analyses and testing frequencies are as follows: Fluoride (if fluoride compounds are

JOHN R. ASHCROFT

At time of

Daily

As necessary 10 CSR 60-4

Operational Testing

Sampling Points

Entry point(s) X

Entry point to

for control	distribution	X	X	X
As necessary	Raw Water
for control			X
Start-up and
every 4 hours
of operation	Filter effluent	X
As necessary	Primary & secondary
for control	basins			X

added) to distribution
Monthly Representative point
in distribution				X
Hardness Daily Entry point to
distribution		X	X	X
Iron Start-up and Filter influent and
every 4 hours and effluent
of operation	X	X2	X2	X2

bacti sampling	X	X	X
Start-up and Filter influent
every 2 hours and effluent
of operation		X	X
Start-up and Entry point to
every 2 hours distribution
of operation	X5	X	X
Start-up and Entry point to
every 4 hours distribution
of operation	X6

		Sample			Iron	Zeolite		Lime Fluoride
Test	Frequency	Location	Disinfection	Sequestration	Removal	Softening	Clarification	Softening Adjustment
Alkalinity	As necessary	Raw water					X	X
(phenolphthalein	for control
and total)
	As necessary	Entry point
	for control	to distribution					X	X
Disinfectant	Continuous1	Entry point
Residual		to distribution			X5		X	X5
	Daily	Entry point
		to distribution	X6,7	X6		X6

Sample Iron Zeolite Lime Fluoride

Test Frequency Location Disinfection Sequestration Removal Softening Clarification Softening Adjustment

Phosphate As necessary Downstream for control from point of

X—Indicates test(s) needed 1—If system serves greater than 3300 population 2—If raw water contains > 0.3 mg/l iron 3—If phosphate compounds are added to the water 4—For facilities utilizing solids contact basins 5—Surface and ground water under the direct influence of surface water 6—Groundwater system not under the direct influence of surface water required to provide disinfection 7—Secondary system required to supplement disinfection or redisinfect

application	X	X	X	X
Sludge As necessary Center cone and
concentration4 for control sludge blowoff and
sample taps			X	X
Temperature5 As necessary Entry point to
for control distribution	X	X	X	X
Turbidity5 Every 4 Entry point to
hours of distribution and filter
plant influent		X5	X	X5
operation

(4) The department, at its discretion, may conduct routine inspections of any public water system or make other necessary inspections to determine compliance with these rules.
(5) If, after investigation, the department finds that any public water system is incompetently supervised, improperly operated, inadequate, of defective design or if the water fails to meet standards established in these rules, the water supplier must implement changes that may be required by the department.
(6) Every supplier of water to a public water system must disinfect all newly constructed or repaired water distribution mains, finished water storage facilities or wells by methods acceptable to the department before being placed in or returned to service.
(7) All finished water reservoirs must be covered by a permanent, protective material, adequately vented with properly screened openings.
(8) Chemicals, materials and protective coatings used in public water systems must be acceptable to the department.
(9) Public water systems must maintain a minimum positive pressure of twenty pounds per square inch (20 psi) throughout the distribution system under all normal operating conditions.
(10) Within thirty (30) days, public water systems must inform the department of a change of the person in charge of the water system.
(11) A supplier of water that adds fluoride to the water system must submit two (2) samples per month for analyses to the Department of Health Laboratory or another approved laboratory.

AUTHORITY: section 640.100, RSMo 1994.* Original rule filed May 4, 1979, effective Sept. 14, 1979. Amended: Filed April 14, 1981, effective Oct. 11, 1981. Amended: Filed July 12, 1991, effective Feb. 6, 1992. Amended: Filed Feb. 1, 1996, effective Oct. 30, 1996. *Original authority: 640.100, RSMo 1939, amended 1978, 1981, 1982, 1988, 1989, 1992, 1993, 1995.