Trivia: The plot of this episode is similar to the plot of "Erin Brockovich" - a water supply being contaminated. Ecklie even calls Catherine Erin Brockovich at one point. Marg Helgenberger, who plays Catherine, was in "Erin Brockovich" as Donna Jensen, one of the people who became sick due to the contaminated water.
CSI: Crime Scene Investigation (2000)
1 trivia entry for season 11
Factual error: In a number of episodes people are shown eating and drinking in the laboratories. For instance, in "Miss Willows' Regrets" Nick and Greg are seen eating fried chicken in the lab, and in "Overload" Sara eats a sandwich while watching Grissom experiment with her deli pickle. There are other examples. No reputable laboratory (which this is supposed to be) would allow its staff to eat or drink while in the lab. It is basic scientific protocol to prevent contamination of samples or the person picking up toxins on their food.
Nick Stokes: There's a sucker born every minute.
Gil Grissom: Yep, and they all come to Vegas.
More questions & answers from CSI: Crime Scene Investigation
Answer: He doesn't have the authority to arrest him - when anyone is arrested in the show, a police officer does it. Also he tells Ty that he is going to be submitting his case findings to Ty's insurance company, who would no doubt contact the IRS, who then would have him arrested for fraud etc.