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To get rid of a sewer smell in your crawl space, you’ll have to find the source of the problem. If it has to do with your sewer lines, then repairing the line will help. You may need to make other repairs, like fixing your sump pump or encapsulating your crawl space to reduce moisture. After you make the repair, depending on the issue, you may still need to clean out your crawl space to get rid of the stink.

The cost to pump a septic tank is $400 on average for most homeowners. You could spend as low as $250 if you have a smaller septic tank or as much as $600 or more if your tank is 1,750 gallons. 

The size of your septic tank is the primary determining price factor, but your geographic location can also play a part in your overall cost. For example, pumping a septic tank in Minneapolis, Minnesota, costs between $175 and $275 on average, but in Portland, Oregon, you'll spend between $440 and $750.

The easiest thing you can do to prolong the life of your septic system is to adopt septic-safe practices. This includes not flushing non-biodegradable items, chemicals, or excessive grease down drains and scheduling regular septic tank pumping to prevent buildup. It’s also important to fix plumbing leaks promptly and to practice water conservation to avoid overloading the system. To maintain your drain field, avoid heavy vehicle traffic and plant shallow-rooted vegetation in the area. Most importantly, invest in routine inspections and maintenance to detect and address issues early.

If you’re maintaining your septic system, your drain field should last around 20 years. However, it’s important to get it inspected every two to five years to help your system last as long as possible and make sure it’s in safe, working order. Contact a septic maintenance company in your area for a quote.