Dry cleaning stores seem to pose a whole new set of problems due to the chemicals they use that can seep into the ground and contaminate residential water supplies. 

; unusually higher rainfall recently; changes in the occupants water use, laundry use, food/drinks, chemicals; a sock or something flushed down the drain; a combination of these or something else.

My name is Akash and I graduated college 4 months ago as a chemical engineer from UCSD.  

We continue building in unsafe areas, injecting toxic chemicals into the ground, poising our environment with petroleum based products, extinction of plant and animal species, and enslaving and killing each other.  

Talmer Bank & Trust, they're in the process of changing their name to Chemical Bank...I just sent you a PM with their contact details.

Any chemicals produced there?

In a deep cleaning company's case, I specifically tell them what to do and what chemicals to use.

For the past 2 years I have been a chemical engineering student with very good grades.

Low oil prices can even be a boon for the ship channel area since many of the chemical plants use it as feedstock.

Since, I have worked in heavy industrial real estate (picture heavy metals, and dry cleaning chemicals, and even buying superfund sites) I can tell you UST is commonly used in the business.