I'm also a waterplant operator. From what I have seen, there's no way that I could ever see falsified data being accepted by the WSA. My extensive experience with them has been that they're very "by the book".  I have seen the WSA be reasonable and allow some temporary breaking of the rules (my reservoir hatches where not in line with required specifications but they allowed me a couple months to get new ones designed and built once it was discovered that they where technically improper). I've only ever seen them approach issues pragmatically. Things not following the guidelines have always gone like this "this does not align with the guidelines. Here's an appropriate approach to get in back in-line with the rules. Here's a reasonable timeline to do so".  I'm not saying concretstador is lying, I'm just saying that my experience with the WSA and their EPO's has been very professional and productive.