The following text is from the original listed building designation:
TR 13 NE HYTHE
6/10000 Hythe Town Reservoir
II
Covered reservoir. Dated 1868. Classical style covering building of ashlar ragstone with red brick dressings and roof now covered in corrugated tin. T-shaped and aligned roughly east-west.
The long walls are of dressed ragstone with plinth, brick margins and pilasters but the inner skin is of brick and rubble stone mixed. Barrel-vaulted roof but wall-head mutilated when the roof was replaced so may have been pitched originally. At the east end is a small porch, primarily of brick with dressed ragstone ashlar used for side walls. This has stone pediment, pilasters and recessed panels of alternate brick and stone and central entrance with flat arch, voussoirs and plank door. The whole internal area is occupied by the reservoir tank which is about three metres deep. The reservoir walls are built in brick and rendered. The interior of the main range is sub-divided by two cross walls with large segmantal arch spans in the centres making the tank one large space. Similar cross walls separate at the short wings at the western end from the main range. Water appears to have entered the tank directly from springs through two or three pipes at its eastern end and left from a single pipe in the bottom of the south western wing. These fittings are reported to be still present but appear to be of quite modern date. This reservoir was on the site of an old Tan Pit and the water came from a spring on land owned by Henry Bean Mackeson, Maltster, who claimed a right to the water. Agreement was reached in 1868 by which the Hythe Corporation became entitled to one half of the yield and the other half became the property of the Landowner who used it in his brew. This arrangement continued until the brewery closed.
Listing NGR: TR1658235031

Description from record TR 13 NE 79:
Folkestone Waterworks Company est 1848, latterly the Folkestone and Dover Water Services Co., purchased an old tan pit at the junction of North Road with Church Road (Tanners Hill) Hythe and apparently converted it to a reservoir c1868 supplied by several springs nearby. The reservoir chamber still stands with a small building over it. This is constructed of ragstone with red brick margins and has a pedimented porch section (with an 1868 datestone and the initials 'HBM', HB Mackeson, the Hythe brewer who contributed funds to the scheme) fronting a longer barrel vaulted building covering the reservoir. (1)

<1> Not applicable, SMR Kent uncatalogued index entry, 'Water Supplies to Hythe (unpublished notes produced by Hythe Civic Society, 1997) (Miscellaneous Material). SKE6440.