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WATER MAIN PRESSURE TEST REPORT PROJECT NAME PROJECT NUMBER CONTRACTOR Calculations for Allowable Leakage Conversions L = SD √ P L = ND √ P [AWWA Formula] 128 oz/gal 133,200 7400 7.48 gal/ft3 Where: L = Allowable Leakage in gallons per hour NOTES: N = Number of Joints 1) Test pressure to be 1.5 times normal D = Diameter of pipe in inches static pressure (min. pressure of 100 psi). P = Test pressure (square root) in psi S = Length of pipe being tested 2) Duration of test shall be 2 hours. TEST INFORMATION Location Date Test Pressure Test Duration Allowable Loss Actual Loss Pass Fail Remarks: Project Representative Contractor Utility Representative ---PAGE BREAK--- Allowable leakage at various pressures and pipe sizes are shown in the Table below (from AWWA C600 - Table 6A): Allowable Leakage Per 1,000 Feet of Pipeline* - gallons per hour Pipe Dia. Test Pressure 3” 4” 6” 8” 10” 12” 14” 16” 18” 20” 24” 30” 36” 42” 48” 54” 250 0.36 0.47 0.71 0.95 1.19 1.42 1.66 1.90 2.14 2.37 2.85 3.56 4.27 4.99 5.70 6.41 225 0.34 0.45 0.68 0.90 1.13 1.35 1.58 1.80 2.03 2.25 2.70 3.38 4.05 4.73 5.41 6.03 200 0.32 0.43 0.64 0.85 1.06 1.28 1.48 1.70 1.91 2.12 2.55 3.19 3.82 4.46 5.09 5.73 175 0.30 0.40 0.59 0.80 0.99 1.19 1.39 1.59 1.79 1.98 2.38 2.98 3.58 4.17 4.77 5.36 150 0.28 0.37 0.55 0.74 0.92 1.10 1.29 1.47 1.66 1.84 2.21 2.76 3.31 3.86 4.41 4.97 125 0.25 0.34 0.50 0.67 0.84 1.01 1.18 1.34 1.51 1.68 2.01 2.52 3.02 3.53 4.03 4.53 100 0.23 0.30 0.45 0.60 0.75 0.90 1.05 1.20 1.35 1.50 1.80 2.25 2.70 3.15 3.60 4.05 *If the pipeline under test contains sections of various diameters, the allowable leakage will be the sum of the computed leakage for each size.