Many people who face this kind of price tag wonder if they can get away with patching their pipes. But if the sewer line is old there are almost certainly water quality other bad spots that will give you problems now or in the near future. A series of patch jobs isn't cheap. In the long run, it just makes more sense to replace the entire line.
Use the sandpaper to remove any loose particles from the hole. It is important for the surface to be properly prepared for these types of gutter water line repair.
After you have the stems out you should be able to find the washer on the "inside" end. If it is nicked, torn or brittle it is likely the cause of your drip. Even if it looks brand new, go ahead and replace it. You've already come this far. You can get replacement washers at almost any hardware store. Sometimes you may want to replace the whole stem, especially if the handle end is stripped out. It's best to just take the stem with you to the store and see if you can match it up. Most Do It Yourself stores have replacement stems for many popular brands. If your valve has a center diverter valve to switch the waterfrom the tub spout to the shower head the same process applies. Many times it is easier to replace the diverter stem than to repair it. This really depends on the design of the stem.
Dishwasher. To check water leakage on your dishwasher, you will need several sheets of paper placed underneath the machine before operating it. When the machine stops, check the sheets of paper you placed underneath to see it they are wet. If so, call a maintenance person to repair the leak immediately. It is important also for you to remember that regular dishwasher uses 15 gallons on every wash load. Make sure that when you use it, the load is full.
Ventilation and insulation are important throughout your house, and especially in crawl spaces and attics. If you have a crawl space in your home, it's best to water line repair the floor with a good quality, heavy-duty plastic. Inside your home, make sure to use the exhaust fans found in most kitchens, bathroom and laundry rooms.
Turn the water off at the main shutoff valve at the street. You should be able to take a pair of pliers(or your bare hands) and turn the valve at the water meter to shut off the water to your home. Once you have shut off the water you can cut the pipe around the leak and make the repair.
By the time that you have made your pick, make sure to check ID and Certification. Remember, these individuals will be doing their works inside your home. The security of your family is also an issue here. If they can't present any papers of identification, then don't take them in! When it comes to your family's safety, there's no room for experiments.