Pro Plumbers

If your bathroom sink is slowly draining instead of holding water, your problem is super easy to fix. You likely just need to make a quick adjustment to the assembly under the sink. Pop-up drains have an arm that reaches down the drain and connects to a little rod. That rod sticks through the drain pipe and is held in place by a metal strip with holes in it. That strip, in turn, is connected to the little lever or handle you pull on to open and close the stopper. The video above from HomeAdditionPlus has an excellent look at how to make adjustments.
The Oatey 8 oz. Handy Pack Purple Primer The Oatey 8 oz. Handy Pack Purple Primer and Solvent Cement contains code-listed primer and solvent cement needed for solvent-welding PVC pipe and fittings. Can be used with up to 4 in. Dia piping. Convenient Handy Pack for storage - just add pipe and fittings. Due to the nature of ...  More + Product Details Close
 CON'T FROM COMMENTS EARLIER.  However,  the  installation took less than 3/4/ hour and was a basic regulator with no other function.  Looking up the price afterwards, invoice did not list type or price, it appears that it would have cost me around $60 for the regulator and another $15 or so for the additional supplies necessary to install it and it was really a rather simple job with easy access.    Given that, it seems that $300 for less that  an hours worth of on site work,  company says it does not include commute time in its prices, is a little high.  While flat rate quotes are nice, they must take into consideration situations where the work load differs depending on the circumstances.  Therefore, unless you are at the upper end of the harder work needed than the average job. it can be argued that my estimated price of $300 for labor was more than a little high.  Maybe I am wrong since I have not used their services for years and  am not knowledgeable of the costs of equipment and professional labor today.  
Most plumbers wont mess with the septic tank. We deal mostly with components inside the house. Did you have a vent pipe in the yard (often looks like a candy cane made of PVC) before the repair but not after? If all he did was replace the line it shouldn't cause a smell inside the house. All plumbing fixtures inside the house should have properly functioning traps. Those traps would create and maintain a water seal against the sewer gases. You should have at least one vent through the roof to equalize pressures within the drainage system. This prevents positive pressures within the system (caused by fixtures discharging into the lines, ie toilet flush) from pushing gas out through the traps, and negative pressures (the waste in line will pull air behind it like your finger over the end of a straw) from sucking water out of the traps.
Plumbing originated during ancient civilizations such as the Greek, Roman, Persian, Indian, and Chinese cities as they developed public baths and needed to provide potable water and wastewater removal, for larger numbers of people.[6] Standardized earthen plumbing pipes with broad flanges making use of asphalt for preventing leakages appeared in the urban settlements of the Indus Valley Civilization by 2700 BC.[7] The Romans used lead pipe inscriptions to prevent water theft. The word "plumber" dates from the Roman Empire.[8] The Latin for lead is plumbum. Roman roofs used lead in conduits and drain pipes[9] and some were also covered with lead. Lead was also used for piping and for making baths.[10]