WATER AND SEWER SEPARATION NOTES: 

WATER AND SEWER FACILITIES SHALL BE SEPARATED IN ACCORDANCE WITH THE ARIZONA ADMINISTRATIVE CODE, CHAPTER 5, ARTICLE 5, SECTION R18-5-502(C).   SUB PARAGRAPHS 1-5 ARE PROVIDED FOR CONTRACTOR'S INFORMATION.  WATER AND SEWER MAINS SHALL BE SEPARATED IN ORDER TO PROTECT PUBLIC WATER SYSTEMS FROM POSSIBLE CONTAMINATION.  ALL DISTANCES ARE MEASURED PERPENDICULARLY FROM THE OUTSIDE OF THE SEWER MAIN TO THE OUTSIDE OF THE WATER MAIN.  SEPARATION REQUIREMENTS ARE AS FOLLOWS:  

1. A WATER MAIN SHALL NOT BE PLACED: WITHIN 6 FEET, HORIZONTAL DISTANCE, AND BELOW 2 FEET, a. VERTICAL DISTANCE, ABOVE THE TOP OF A SEWER MAIN UNLESS EXTRA PROTECTION IS PROVIDED. EXTRA PROTECTION SHALL CONSIST OF CONSTRUCTING THE SEWER MAIN WITH MECHANICAL JOINT DUCTILE IRON PIPE OR WITH SLIP-JOINT DUCTILE IRON PIPE IF JOINT RESTRAINT IS PROVIDED. ALTERNATE EXTRA PROTECTION SHALL CONSIST OF  ENCASING BOTH THE WATER AND SEWER MAINS IN AT LEAST 6 INCHES OF  CONCRETE FOR AT LEAST 10 FEET BEYOND THE AREA COVERED BY THIS  SUBSECTION (C)(1)(A). b. WITHIN 2 FEET HORIZONTALLY AND 2 FEET BELOW THE SEWER MAIN.  

2. NO WATER PIPE SHALL PASS THROUGH OR COME INTO CONTACT WITH ANY PART OF A SEWER MANHOLE. THE MINIMUM HORIZONTAL SEPARATION BETWEEN WATER MAINS AND MANHOLES SHALL BE 6 FEET, MEASURED FROM THE CENTER OF THE MANHOLE.  

3. THE MINIMUM SEPARATION BETWEEN FORCE MAINS OR PRESSURE SEWERS AND WATER MAINS SHALL BE 2 FEET VERTICALLY AND 6 FEET HORIZONTALLY UNDER ALL CONDITIONS. WHERE A SEWER FORCE MAIN CROSSES ABOVE OR  LESS THAN 6 FEET BELOW A WATER LINE, THE SEWER MAIN SHALL BE  ENCASED IN AT LEAST 6 INCHES OF CONCRETE OR CONSTRUCTED USING  MECHANICAL JOINT DUCTILE IRON PIPE FOR 10 FEET ON EITHER SIDE OF THE  WATER MAIN.  

4. THE SEPARATION REQUIREMENTS DO NOT APPLY TO BUILDING, PLUMBING, OR INDIVIDUAL HOUSE SERVICE CONNECTIONS. 

5. SEWER MAINS (GRAVITY, PRESSURE, AND FORCE) SHALL BE KEPT A MINIMUM OF 50 FEET FROM WELLS UNLESS THE FOLLOWING CONDITIONS ARE MET: a. WATER MAIN PIPE, PRESSURE TESTED IN PLACE TO 50 PSI WITHOUT EXCESSIVE LEAKAGE, IS USED FOR GRAVITY SEWERS AT DISTANCES GREATER THAN 20 FEET FROM WATER WELLS; OR b. WATER MAIN PIPE, PRESSURE TESTED IN PLACE TO 150 PSI WITHOUT EXCESSIVE LEAKAGE, IS USED FOR PRESSURE SEWERS AND FORCE MAINS AT DISTANCES GREATER THAN 20 FEET FROM WATER WELLS. "EXCESSIVE LEAKAGE” MEANS ANY AMOUNT OF LEAKAGE WHICH IS GREATER THAN THAT PERMITTED UNDER THE AWWA STANDARD APPLICABLE TO THE PARTICULAR PIPE MATERIAL OR VALVE TYPE.