SECTION 252:626-5-6. Laboratory facilities

  Each public water supply must have its own equipment and facilities for routine laboratory testing necessary to ensure proper operation. Provide methods for verifying adequate quality assurances and for routine calibration of the equipment.

(1)   Testing equipment. Laboratory equipment and facilities must be compatible with the raw water source, intended use of the treatment plant and the complexity of the treatment process involved. The laboratory must have enough equipment to perform operating control tests set forth in OAC 252:631 and provide the following laboratory equipment:

(A)   a pH meter, jar testing equipment, a nephelometric turbidimeter, and titration equipment for both hardness and alkalinity for surface water treatment plants utilizing flocculation and sedimentation, including those that soften the water with lime,

(B)   a pH meter and titration equipment for both hardness and alkalinity for ion exchange softening plant and lime softening plant treating only ground water,

(C)   for iron and manganese removal plants, test equipment capable of accurately measuring:

(i)   iron to a minimum of 0.1 mg/l, and/or

(ii)   manganese to a minimum of 0.05 mg/l,

(D)   test equipment for determining both free and total chlorine residuals for PWS systems that chlorinate,

(E)   test equipment for determining fluoride concentration for PWS systems that fluoridate or that treat or use blending for the reduction of naturally occurring fluoride, and

(F)   test equipment capable of accurately measuring phosphates from 0.1 to 20 mg/l for PWS systems that feed polyphosphate or orthophosphate.

(2)   Physical facilities. Provide sufficient bench space, adequate ventilation, lighting, storage space, laboratory sinks, and auxiliary facilities.

[Source: Added at 18 Ok Reg 1612, eff 6-1-01; Amended at 31 Ok Reg 1301, eff 9-12-14]