Fats, oils and grease, known collectively as FOG, represent the most serious enemy of our sewer lines. Some examples include:

Butter Cooking oil Grease Food scraps Lard Margarine Meat scraps Shortening When FOG is dumped down the drain, it forms large, thick grease balls that clog pipes. Clogged pipes can result in sewer backups and spills, create environmental problems, cause traffic tie-ups or even flood homes and businesses.
Commercial food-handling facilities contribute greatly to FOG buildup in sewer lines because of the amount of grease used in cooking and other food prep work.
Preventing sewer backups from FOG blockages also saves money.
This is a pipe clogged with thick fats, oils and grease, also known as FOG.
Can it. Cool it. Throw it away.
Dos

Can the grease! Keep an empty metal can and pour oil and grease into the can. Allow grease to cool in the container before throwing it in the trash. Wipe before washing. For greasy pans, pour the grease into a container and use a paper towel to wipe out the remaining grease in the pan prior to washing. Seal the oil. Liquid should be limited to no more than one-half gallon. Mix liquid vegetable oil with an absorbent material such as kitty litter or coffee grounds in a sealable container before throwing it in the trash. Keep drains clean by pouring half a cup of baking soda down the drain followed by half a cup of white vinegar. Wait 10 to 15 minutes and then rinse with hot water. Don’ts

Don’t pour cooking oil, pan drippings, bacon grease, salad dressings or sauces down the sink or toilet, or into street gutters or storm drains Don’t use hot water to rinse grease off cookware, utensils, dishes or surfaces. Don’t use a garbage disposal or food grinder. Grinding food up before rinsing it down the drain does not remove FOG; it just makes the pieces smaller. Even non-greasy food scraps can plug your home’s sewer lines. So, don’t put food of any kind down the drain. Don’t use cloth towels or rags to scrape plates or clean greasy or oily dishware. When you wash them, the grease will end up in the sewer. Don’t run water over dishes, pans, fryers and griddles to wash oil and grease down the drain. Don’t flush any type of wipe down the commode. Even flushable wipes only break down into smaller pieces. This gives FOG something to cling to and build up more quickly. When a sewer overflows, it is usually the result of inappropriate materials in the sewer system. Please help prevent sewer back-ups and overflows.
Who should you call if you see a sewer overflow?
Call the DPW Service Order Desk at 396-0321 or 396-0324.