Metro Water District

Metro Water Supplemental Specifications and Details

All construction in the Metropolitan Domestic Water Improvement District (MDWID) shall conform to the most current edition of the Metro Water Supplemental Specifications and Details for Construction (2016 Edition), as a supplement to the Tucson Water Specifications and Details (2011 Edition).  Specifications and details not modified or excluded from the Tucson Water Specifications and Details by these supplemental specifications and details shall still apply to all construction in the MDWID.  All construction shall also conform to the Pima Association of Governments (PAG) Standard Specifications and Details for Public Improvements (2015 Edition), along with Arizona Department of Environmental Quality Bulletin 10. All work shall be performed by a contractor licensed by the State of Arizona, as determined by the Arizona Registrar of Contractors. A copy of the latest edition of the said specifications and details shall be on the project site at all times.

Entire MDWID Supplemental Specifications and Details (Approx. 4.7 MB in PDF)

Metro Water Supplemental Specifications and Details for Construction (2016 Edition)

(intentionally blank pages are included for double-sided printing)

MDWID Supplement to the Standard Tucson Water Specifications (in PDF)

Sitework

0201 — Mobilization
0203 — Site Clearing
0205 — Earthwork
0209 — Installation of Waterlines
0210 — Pipe Marking, Detection Tape and Tracer Wire
0211 — Pavement Replacement
0212 — Existing Vegetation & Native Plants
0213 — Surface Restoration
0215 — Construction Surveying and Layout
0216 — Construction Surveying and Layout (Performed by City) 

Pumps

1201 — Vertical Turbine Booster Pumps
1202 — Vertical Turbine Lineshaft Well Pump & Motor
1203 — Centrifugal Booster Pump & Motor
1204 — Submersible Pumps 

Piping, Valves and Appurtenances

1402 — Concrete Cylinder Pipe
1
403 — High Density Polyethylene (HDPE) Pipe
1404 — Polyvinyl Chloride Pipe
1405 — Galvanized Steel Pipe
1406 — Thrust Restraint
1409 — Tapping Sleeve and Valve
1410 — Resilient-Seated Gate Valve
1411 — Butterfly Valve
1413 — Air Release Valve
1414 — Pressure Regulating Valve
1416 — Copper Service Materials
1425 — Valve Nut Extension
1426 — Valve Box and Cover
1430 — Fire Hydrants
1431 — Hydrostatic Pressure Testing of Water Facilities
1433 — Reclaimed Waterlines
1440 — Fittings, Flexible Couplings and Repair Clamps
1445 — Private Plumbing
1446 — Water Meters
1450 — Measurement and Payment
Backlow Prevention

MDWID Supplement to the Standard Tucson Water Details (in PDF)

MW-105 — General Construction Notes
MW-110 — Customer Notification
MW-115 — Pipe Bedding and Trench Backfill
MW-116 — Tracer Wire and Polyethylene Warning Tape
MW-300 — Valve Box & Cover
MW-305 — Valve Nut Extension
MW-309 — Water Services
MW-330 — Combination Air/Vacuum Release Valve
MW-400 — Drain Valve Assembly (Existing Construction)
MW-405 — Drain Valve Assembly (New Construction)
MW-500 — Fire Hydrant Installation
MW-600 — Restrained Joints
MW-600A — Restrained Joint Examples
MW-610 — Concrete Valve Thrust Block
MW-1800 — Backflow Prevention Notes
MW-1850 — Plan Symbols

Appendix A  MDWID Approved Materials List for Pipe Sizes 4" through 12"

H2Know:

Metro Water increased its storage capacity of 4.5 million gallons in 1992 to over 16.5 million gallons in 2008. More storage increases overall reliability... More>

  • © Metropolitan Domestic Water Improvement District
  • 6265 N. La Cañada, Tucson, Arizona 85704
  • 520-575-8100 (office)
  • 520-575-8454 (fax)

Office hours: Monday – Thursday 7:30am - 5:30pm and Friday 7:30am - 12 noon