Waterra Well Slug WWS-2X3

3-part well slugs

The Waterra Well Slug (WWS-2X3) is designed specifically for 2" Schedule 40 monitoring wells, but in practice can be used in any 2” diameter or large monitoring well. The Well Slug consists of three sections of solid Acetal Rod which can be used either individually or together to produce greater displacement. Acetal thermoplastic is used as the material of construction because of its long acceptance as a material of choice for groundwater monitoring equipment, its durability, its chemical resilience in harsh environments, and unlike some polymers, acetal thermoplastic is PFOA and PFAS free.

FEATURES

  • Constructed in three segments for flexible use and easy transportation
  • Durable, long lasting, chemically resistant material of construction
  • Easy to use
SLUG DIMENSIONS & VOLUMES
Individual Section of the Waterra Well Slug
LENGTH 1.63' (497.4 mm)
DIAMETER 1-5/8" (41.28 mm)
VOLUME 0.15 imp gal (0.18 US gal) (0.67 L)
3 Assembled Sections of the Waterra Well Slug
LENGTH 4.9' (1492 mm)
DIAMETER 1-5/8" (41.28 mm)
VOLUME 0.44 imp gal (0.53 US gal) (2.0 L)

VARIABLE HEAD PERMEABILITY TESTS

Probably one of the oldest methods of calculating a formations permeability (hydraulic conductivity) has been completed with the use of a well slug.

The well slug is a solid object of a known volume and displacement, which can be quickly immersed or withdrawn from a water column producing near instantaneous head level changes in a well. In its most basic usage, values for permeability can be calculated with the use of a slug, a stopwatch, and a water level indicator. Today the stop watch and water level indicator have often been replaced with a pressure transducer and data logger which will produce more precise data, often taking readings as quickly as ¼ second intervals, but the well slug itself remains largely unchanged.

Waterra 3000' graduated tether — WGT-3000

 

WATERRA GRADUATED TETHER
LENGTH 3000 feet (914 m)
WIDTH 3/16" (4.8 mm)
MARKINGS graduated in feet from 0' to 3000' with markings at one foot increments
MATERIAL waterproof polyester
AVERAGE BREAKING STRENGTH 170 lbs (0.756 kN)
VOLUME 0.44 imp gal (0.53 US gal) (2.0 L)