[1] Standard features include: handrail in tubular steel, davit, access ladder, trigonometric station, inlet and outlet valve chambers.

The group of reservoirs demonstrates a high level of engineering expertise and architectural detail, accommodating both structural requirements and aesthetic qualities.

[1] Ashfield Reservoir was listed on the New South Wales State Heritage Register on 15 November 2002 having satisfied the following criteria.

[1] The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales.

The group of reservoirs demonstrate a high level of engineering expertise and architectural detail, accommodating both structural requirements and aesthetic qualities, rare in NSW.

[1] The place has potential to yield information that will contribute to an understanding of the cultural or natural history of New South Wales.

[1] The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales.