Not to rain on anyone's parade here, but if we have to check the results on the official agency postings anyway instead of relying on what you put on the website, what's the point of the website in the first place? Kind of feels like either own up to that you get the data import right, or don't bother at all. Maybe I miss the point though?
Edit: I just tried a random example, https://bayswimcheck.com/beaches/lake-del-valle/ which links to https://www.ebparks.org/recreation/swimming/del-valle#monito... and your page says "Good to swim today" while the official website has posted a Caution Advisory.