Hello.  Are Spindrift (Mango Orange, Grapefruit) and La Croix (Guava, Grapefruit) Kosher for pesach? I read that flavored water needs P certification due to “natural” essence that can be chametz and the and last year was advised no P needed. Very conflicted! Also tomato paste and sauce? Some say needs P due to citric acid– why is citric acid an issue- or is it?

Thank you in advance!!