Can swimming in a salt treated pool cause hypertension?

Condition analysis:
I am not so sure. I have found that swimming in the sea definitley raises my blood pressure. The older you get, the more you notice this.
Not likely.

If your assumption is that the salt in the pool water is causing high blood pressure (like a high salt diet), then the answer is definitely, no.
The amount of salt in a saltwater treated pool is very low (around 0.5%, which is one-half of one-percent). This concentration of salt is about half as much as a teardrop (1%) and nearly eight times less than sea water (3.75%).

And since the salt in the water can't be absorbed through your skin, you would have to drink a LOT of pool water while you're swimming to intake any significant level of salt.

I'm not a doctor, but I would like to suggest that everyone eat right, exercise, and see a doctor if you think you have high blood pressure.
And keep swimming - it's great exercise.

Instructions:
Bananas: Banana has been found to be helpful in reducing blood pressure; it is so because banana is a rich source of potassium. On an average, a person requires 3 to 4 servings of potassium-rich vegetables and fruits on a daily basis. Consume 3 to 4 bananas in any form through the day on a regular basis to get relief from hypertension. If you do not like bananas, you can also try fruits like dried apricots, orange, raisins, currant, cantaloupe, baked sweet potatoes, or winter squash.