007.18.2-IX. Surface Water Supplies
AR ADC 007.18.2-IXArkansas Administrative Code
Ark. Admin. Code 007.18.2-IX
007.18.2-IX. Surface Water Supplies
The water at the intake, based on the monthly arithmetical average number of coliform organisms, shall not exceed 5,000 per 100 ml. in any month; nor exceed this number in more than 20 percent of the samples examined during any month; nor exceed 20,000 per 100 ml. in more than 5 percent of such samples.
The water at the intake shall not contain organic, inorganic, or radiochemical contaminants that would not be removed or reduced to acceptable levels by a reasonable method of water treatment.
Protective distances stated in this section are minimum distances that may be used only under ideal circumstances. Greater protection will be required in most cases; the extent of the protective area will be determined by a field inspection of the proposed site by the staff of the Department.
Artificial lakes and all other bodies of water serving as reservoirs for city or other public water supplies shall not be used for recreational or other purposes in a manner whereby the water supply might become contaminated and thus become a potential hazard to public health. (Also see Ark. Code Ann. § 14-234-405 and Ark. Code Ann. § 14-251-106.)
Intake structures shall be located and designed such that the best possible water quality can be obtained. Multi-level intake ports shall be provided.
Buoys shall be located in the water supply reservoir at a minimum distance of 300 feet from the intake and the use of the water or land within this 300 foot zone shall be restricted to water supply activity only (restricted intake zone). Greater distances may be required when deemed necessary by the Arkansas Department of Health.
The owners of water systems utilizing river intakes shall own and effectively control a restricted buffer zone around the water intake. The minimum restricted buffer zone shall include all land from the riverbank to a line 300 feet back, if within a one fourth mile radius of the intake. The maximum extent of this zone will be determined by the Arkansas Department of Health on an individual basis after a sanitary survey of the intake site has been made.
The Department may reduce the downstream protected zone if a weir or other physical barrier precludes downstream water from backing up to the intake.
The owners of water systems shall own and effectively control a restricted buffer zone around the reservoir. The restricted buffer zone shall include all of the land bounded by a fixed line which is at least 300 feet horizontally from the shore line when the reservoir is at the maximum high water level contour as established by the Arkansas Department of Health. Use of the restricted buffer zone will be determined by the Arkansas Department of Health.
In the case of large multi-purpose reservoirs developed, owned and operated by the federal government, the water system owner shall effectively control a restricted buffer zone on land around the water intake structure. The extent of this restricted buffer zone will be determined on an individual basis by the Arkansas Department of Health after a sanitary survey of the proposed intake site has been made. All possible sources of contamination are prohibited within this restricted buffer zone.
The owners of water supplies utilizing spring sources shall own and effectively control a restricted buffer zone around the spring. The minimum restricted buffer zone shall be all property with a 300 foot radius of the spring enclosure. The maximum extent of this buffer zone will be determined by the Arkansas Department of Health on an individual basis after a sanitary survey has been made of the spring site.
Deviations from the minimum restricted buffer zone may be approved by the Arkansas Department of Health for a portion of the restricted buffer zone when that portion is owned by another governmental entity and protective easements to prohibit the conveyance, use, or storage of potential contaminants within the easement are granted to the public water system.
No sewage, garbage, dead animals, refuse, industrial wastes or other objectionable substances shall be deposited in the reservoir, or in the restricted zones of any surface water source or surface water influenced ground water source.
None of the above substances may be deposited, discharged, or disposed of within the watershed of the water source, without the written approval of Arkansas Department of Health.
Horses, cows, sheep, goats, swine, fowl, or other domestic animals are prohibited in the restricted zones. Domestic animal lots and pens located on the watershed of a water supply shall be maintained in a manner acceptable to the Arkansas Department of Health.
Residences, dwellings, houses, cottages, camps, cabins, tents, trailers, club houses, or other places where people reside, congregate, or are employed are prohibited in the restricted buffer zone around the reservoir; provided, however, that the water utility may, upon approval by the Arkansas Department of Health, construct such structures in the restricted buffer zone that are necessary for the protection of the reservoir. All sewage disposal facilities located on the watershed of the reservoir shall be constructed and maintained in accordance with the requirements of the Arkansas Department of Health.
Camping is prohibited in the restricted buffer zone of the water supply. Picnicking is prohibited in the restricted intake zone.
Filtration of all surface water sources and surface water influenced groundwater sources, by a method approved by the Arkansas Department of Health, is required.
The Arkansas Department of Health may, by using a published policy, signed by the Director of the Department and approved by the U.S. Environmental Protection Agency, utilize discretion allowed in the National Primary Drinking Water Regulations to allow an alternate MCL for turbidity.
The Arkansas Department of Health shall:
Set the level of removal/inactivation for enteric cysts and viruses (logarithmic removal rates) required for each surface water source and each surface water influenced groundwater source.
Determine treatment plant efficiency for removal of enteric cysts and viruses.
Determine the contact time or other operational parameter associated with each treatment plant and its equipment, based on information submitted by the owner or established by the staff of the Arkansas Department of Health, for assigning the level of inactivation of enteric cysts and viruses provided by the disinfection system.
Determine if each ground water source utilized by a public water system is surface water influenced.
Credits
Amended April 1, 2010; March 23, 2012; Feb. 23, 2014.
Current with amendments received through February 15, 2024. Some sections may be more current, see credit for details.
Ark. Admin. Code 007.18.2-IX, AR ADC 007.18.2-IX
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