The property cleaning service package does not include sewer dredging and sludge cleaning.

There is no explicit stipulation on how often the property management company must pass through the sewer, but the third-level standard of Shijiazhuang Residential Property Basic Service Standard Examination Form is that rainwater wells and septic tanks should be inspected every six months 1 time, the second-level standard should be inspected every quarter 1 time, and the first-level monthly inspection 1 time must have inspection and dredging records. You can look at the level of property qualification in your community, and then check the property against the standard. It is illegal for you to pay the sewer regularly and then deduct it from the property fee. In the future, the property will sue you, and your chances of winning the case are not great. This method is not recommended. You can regularly urge the property to open sewers, which is a little more troublesome, but the effect will be better. If your home is flooded because the property fails to check and clear the sewer within the specified time period, the property needs to compensate you for the loss, but there must be evidence.