Technical Booklet N Drainage·Page 7·83(1)
Cesspool, septic tank and similar structures construction and siting
Cesspools and septic tanks must be impervious, protect water sources from pollution, be accessible for maintenance without passing through occupied buildings, and be positioned to avoid nuisance or health hazards.
Any cesspool, septic tank or similar structure shall be—
(a) so constructed as to be impervious to both liquid from the inside and subsoil water from the outside; and
(b) so sited—
(i) as not to render liable to pollution any spring, stream, well, adit or other source of water which is used, or is likely to be used, for drinking, domestic or kitchen purposes;
(ii) that there is ready means of access for cleansing it and removing its contents without carrying them through any building in which any person resides or is employed in any manufacture, trade or business, or to which the public has access; and
(iii) as not to be in such proximity to any building in which any person resides or is employed in any manufacture, trade or business, or to which the public has access, as to be liable to become a source of nuisance or a danger to health.
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