Hot water lines can't be the only loophole causing lead ingestion.
https://toxicfreefuture.org/press-room/new-study-rates-best-...
All these small environmental dangers add up. And they are so hard to keep track of. I would never suspect a water hoose to contain led. Let alone 6.8%.
The dangers really are hard to keep track of. It's too easy to blame the consumer (didn't you read the packaging for your new garden hose?). Now the threat is plastics, which requires a materials science degree to understand as a consumer.
Things started changing in the 2000's when companies started seeking compliance with E.U REACH and RoHS regulations. Garden hoses are now largely lead free, as are blinds, but electrical cords have taken longer to switch over.
It can be either, depending on context. (Being pedantic here just so nobody comes away thinking it can only be one or the other.)
The guy who pointed it out to me was making a sales pitch for an RV, so the hose he was upselling was for potable water-- the fitting for it on the RV was presumably selected for potability as well. Connecting a white hose to the spigot on your house could mean you're passing dirty water through a safe hose.
To be real anal, with aquaculture you have to screen fittings for other metals too. Exposure to brass will kill pretty much everything in a saltwater tank.