Includes reception pits, stores for diluted slurry, such as run-off from dirty yards or solid manure stored on yards, the washings from buildings or yards used by livestock.
Mae hyn yn berthnasol i gyfleusterau a rennir, fel lifftiau neu risiau cymunol mewn bloc o fflatiau a cheginau neu olchdai a rennir mewn noswylfeydd.