The excerpt is what Squarespace displays as the post preview on your blog index page and sometimes in social sharing. Keep it to 2–3 sentences, lead with the problem the reader has, and include the keyword naturally. Here's one ready to use:

Most Escondido homeowners assume their pool is being maintained properly because it looks clean. But there's a real difference between a pool that looks fine and one that's actually been serviced correctly — and in our climate, that gap catches up fast. Here's what good pool maintenance in Escondido actually includes, and the signs that your service might be cutting corners.