Cat-safe pond plants
So I want to make a small wildlife pond next to my woodland wildflower patch but I need to make sure the plants are safe for cats as I have 5 (plus visitors) who I'm sure would love to drink the water and sniff the flowers. My current choices are a Marsh Marigold, a Water Forget-me-not and a Purple loosestrife plus a hornwort. I will only have one of each and planted around the margin with the hornwort fully submerged. Are these plants toxic to cats? If so, what are some alternatives?
This is my preformed pond, its 77cm x 70cm and 30cm deep so it's quite small.

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Have always had a pond and have had water lilies, marsh marigolds, water hawthorn and mints, pontederia cordata, sagittaria sagittifolia, equisetum, marginal and Siberian irises etc etc.
Apart from inadvertently brushing past a lily and getting pollen on their coat which they then ingest while washing, I think cats are pretty smart about what not to eat. I've had cats killed in the road or die of cancer or kidney failure but never plants.
"We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
Thank you for reassuring me