Excellent cocktail here in Texas. The Ranch Water recipe I remember (a bit more basic ) was 45 ml Blanco Tequila, 30 ml of lime juice, ice, Topo Chico and a lime wedge in a Higball glass. Might be a good one to add to the cocktail recipes. Take care.
Forgot, the above would be a lower sugar option since Lime contains a bit of sugar. Cheers ya’ll.