R309-505-6. Surface Water Sources

(1) Determination of Surface Water Source.

A surface water source is any water source which rests or travels above ground for any period of time. Such sources include rivers, streams, creeks, lakes, reservoirs, ponds or impoundments.

(2) Treatment of a Surface Water Source.

(a) As a minimum, surface water sources shall be given complete treatment as specified in R309-525 or R309-530.

(b) All surface waters shall be treated to assure:

(i) at least 99.9 percent (3-log) removal and/or inactivation of Giardia lamblia cysts between a point where the raw water is not subject to re-contamination by surface water runoff and a point downstream before or at the first customer;

(ii) at least 99.99 percent (4-log) removal and/or inactivation of viruses between a point where the raw water is not subject to re-contamination by surface water runoff and a point downstream before or at the first customer; and

(iii) removal of substances, as needed, to comply with the quality requirements of R309-200.

(c) A public water system using a surface water source is considered to be in compliance with the requirements in subsection (b), above, if the treatment technique utilized produces water meeting the quality provisions of R309-200, provided that all monitoring required by R309-215 has been accomplished.