@sashh Someone with more scientific knowledge than me may be along shortly to give a more informed answer but if I'm remembering all I learnt about it when I worked at a vet practice the answer is no - I believe it is only transmitted in cat faeces, not their urine. Cats are completely unique in their ability to spread toxoplasmosis through their faeces, hence why for the sake of immuno-suppressed groups, such as pregnant women, it's really important to keep it out of our water supply. We don't have any way of treating it out of the supply currently.
For balance - most cats don't have toxoplasmosis but the problem is that generally there's no way of knowing which cats do and don't have it as it rarely makes the cats themselves ill. Hence why the advice for pregnant women is to avoid contact with all cat faeces and to wear gloves while gardening.
Similarly humans sometimes get toxoplasmosis but it presents like a cold/flu so if you are fit and healthy you usually just think you've had a cold. It only becomes a danger if you're pregnant (it can affect the unborn child) or immuno-suppressed e.g. having cancer treatment etc...