Explore Optometry. Home / Education / Admissions / Explore Optometry. A Doctor of Optometry (OD) is an independent, primary health care provider who examines the visual system, the eye and associated structures, as well as diagnoses, treats and manages related diseases and disorders. Optometry involves much more than prescribing and fitting glasses and contact lenses.
In most of the UK, when hard water is softened with water softener, the softened water is likely to comply with the Drinking Water Regulations, assuming that the concentration of sodium does not exceed 200 mg/l, it would be regarded as wholesome and therefore considered safe to drink over the long term.n most of the UK, when hard water is softened with water softener, the softened water is likely to comply with the Drinking Water Regulations, assuming that the concentration of sodium does not exceed 200 mg/l, it would be regarded as wholesome and therefore considered safe to drink over the long term.
While there are many factors which make growing houseplants difficult, softened water can indeed be a cause of problems. If your water softener replaces calcium and other hard water minerals with sodium, a common means of softening water, then it is indeed causing problems when you water your plants with that water.Sodium, though needed by some plants in very low amounts, is toxic to plants at slightly higher concentrations.hile there are many factors which make growing houseplants difficult, softened water can indeed be a cause of problems. If your water softener replaces calcium and other hard water minerals with sodium, a common means of softening water, then it is indeed causing problems when you water your plants with that water.