The site of Lower Mill, Brynmill, now lies in Singleton Park close to its boundary with Brynmill Lane, a short distance to the south of Upper Mill. The mill appears in financial records of the fourteenth century and was still in use in the nineteenth century. The mill went out of use and was eventually destroyed but the water course which powered it still flows through the Park. During the Middle Ages it lay within a milling complex in this part of the borough of Swansea (NPRN 411018).
The mill survives only as a stony, tree-grown mound at SS63449206, 18m across and 2m high, presumably demolition rubble heaped up against the Park boundary wall abutting Brynmill Lane. The Brynmill Stream flows into and below the mound, from where it is culverted out to the nearby shoreline.
