Tenn. Comp. R. & Regs. 0400-45-01-.29 - USE OF NON-CENTRALIZED TREATMENT DEVICES

(1) Public water systems shall not use bottled water or point-of-use devices to achieve compliance with an MCL. Bottled water or point-of-use devices may be used on a temporary basis to avoid an unreasonable risk to health.

(2) Public water systems may use point-of-entry devices to comply with maximum contaminant levels only if they meet the following requirements.

(a) It is the responsibility of the public water system to operate and maintain the point-of-entry treatment system, and

(b) The public water system must develop and obtain Departmental approval for the monitoring plan before point-of-entry devices are installed for compliance. Under the plan approved by the Department, point-of-entry devices must provide health protection equivalent to central water treatment. "Equivalent" means that the water would meet all Primary Drinking Water Standards and would be of acceptable quality similar to water distributed by a well-operated central treatment plant. In addition to the VOCs, monitoring must include physical measurements and observations such as total flow treated and mechanical condition of the treatment equipment.

(3) Engineering reports and construction documents must be submitted to and approved by the Department in accordance with Rule 0400-45-01-.05.

(4) The design and application of the point-of-entry device must consider the tendency for increase in heterotrophic bacteria concentrations in water treated with activated carbon. It may be necessary to use frequent backwashing, post-contactor disinfection, and Heterotrophic Plate Count monitoring to ensure that the microbiological safety of the water is not compromised.

(5) Every building connected to the system must have a point-of-entry device installed, maintained, and adequately monitored. The public water system must certify that every building is subject to treatment and monitoring and that the rights and responsibilities of the public water system customer convey with title upon sale of property.

Notes

Tenn. Comp. R. & Regs. 0400-45-01-.29

Original rule filed August 1, 2012; effective October 30, 2012. Rule was previously numbered 1200-05-01.

Authority: T.C.A. §§ 68-221-701 et seq. and 4-5-201 et seq.