Not sure what the commute from Petworth is like, but we've been happy with Patuxent Aquatics Club (PAC) with practice at University of Maryland. Super low key, low pressure, and much cheaper than a lot of the others.

Look into Junior wave for this year coming up to get them in shape. NB: I have heard the Junior wave experience is VERY hit and miss but it may be the most convenient for you.

I think you have the main clubs that are reasonably accessible from DC. Maybe also check out TOLL and RMSC.

Here you go: https://www.pvswim.org/clubs

We are new to the swim world. Kid is only six so we would try out next year. We live in Petworth. Which clubs should we look at? I’m aware of machine, dc wave, ncap, and sea devils. Are there others? TIA!