How wide are you opening the taps? Posting a short video of what's going on might help.

They use a 16.5mm aerator if that helps. Smaller than standard size.

I believe it’s the angle of your faucet, it faces directly downward. If it had a slight angle it would reduce the splash. We had a similar problem when replacing our kitchen faucet. It is prone to splashing with even a relatively slow flow. Never been a problem with our other faucets.

Thanks JRB, any ideas how to change that?

"How wide are you opening the taps?" means how much water flow are you allowing?

jrb451-

I've got three 4 bathrooms and 4 different faucets. Three point directly downward; one has a slight angle; none splashes out of the sink.

It looks like a "Cia" model. Their parts list shows two different aerators. Might want to try the one different to yours.

Sinks and faucets should be pulled as far forward as possible to reduce splashing.

KUDZU, they are pretty closed. Only enough water flow to actually be able to use it. If that makes sense...

Wes- Is the splashback entirely a result of water splashing up from the sink when the water stream hits it, or is there possibly an issue with the aerator where some of the stream is spraying outwards from the faucet spout?

ah got your last comment. It's splashing with the tap wide open or partially open.

All of the water is coming from hitting the bottom of the sink and splashing back up out of it. I'll try to get a video of it.

Sink Video Here's a video of one of the sinks being used. Any tips based on this? Note that it spatters regardless of how open the water lines are underneath the sink or how open the taps are at the faucet.

Sinks with a curved bottom always splash…nothing is going to change that…the only solution is to replace it with a flat bottom sink..if cost is crucial…. a sink that size can be found economically anywhere

I have a similar problem with my bathroom sink though if I don't turn the water up too high it does okay. I think it is the shape of our sinks and in your case, combined with the faucet. Does the faucet produce a strong, narrow stream of water? Would this faucet allow a swivel or flexible aerator to be attached to the end? Some cartridge models with the inner plastic parts won't (mine won't) but if it would, it might solve your problem.

Thanks Lisianthus, that is the next thing I was going to try--- a swivel aerator. Unfortunately, our faucet is very narrow and I can only find ones that fit regular sized faucets. I'm thinking we may just have to get new faucets.

That's really disappointing, Wes, and it is such a nice looking faucet.

My straight-down flow Moen Genta faucet splashes toward the user. The only way I have found to stop it is to depress the drain plug most of the way while keeping the water at a low flow. The adjustment to restrict water flow under the sink does not control the flow enough to make a difference. The sink bottom is narrow and flat with front and back sides sharpley angled. The aerator in the faucet is rectangular with large holes. I cannot find an aerator replacement with finer holes for this shape of faucet opening. This is a design feature/combination that needs to be researched and addressed by the manufacturers.