I have worked in a sewer treatment lab for 11 years, thats where my office is and I have an opened drain on the floor right by my desk. I have been getting sick to the stomach, headaches, confusion legs swelling and lymph nodes plus other symptoms. They refuse to get me another office. I think they should get sewer gas testing. I have been working from home and don't want to go back in there. I need to know if there are anyone that does sewer gas testing in pennsylvania?