One of the biggest myths and misnomers about synthetic turf is that it does not drain and treated as impervious by backward, closed-minded municipal governments, city councils or HOA’s.  Typically, these folks already made up their minds that they don’t want synthetic turf in their communities and are going to deny their constituents from having it based on false claims.  Synthetic turf drains at a much higher rate than natural sod and has been tested by geotechnical engineers to prove it.  Moreover, standardized ASTM testing on the turf material itself shows it drains at a rate above 100 inches per square yard per hour using even the traditional, hole punched polyurethane backing.  High-flow through backings designed for pets drains at even higher rates.  Porous base materials like 57 stone topped with 89 stone ensure a high flow through rate as well.  Ironically, these same naysayers are all for the product when it comes to their parks, playgrounds and athletic fields which all seem to drain fine...no problem.