Hydrostatic Pressure TestOn completion of main laying and before putting the water mains into service, every section of the water main, including the washout pipes, must be hydrostatically tested and the test results recorded (see sample record form in Appendix 3.2). The procedure and the compliance criteria of the tests should be in accordance with the requirements detailed in Clauses 22.81 -22.83 and Appendix 22.1 of GS.