First of all, if only a few days separates us from starting the spare pipeline, then the inhabitants of the left-bank Warsaw should:
- refrain from washing and washing cars until then. Do we really need to wash the curtains and curtains just in the first week of September?
It is also worth a more restrictive approach to what we throw into the toilet bowl. It is worth consolidating the habits that we are now correcting. There is a Sewage Sludge Thermal Utilization Station in the "Czajka" sewage treatment plant.  The installation, operating as an incineration plant, was created to deal with solid waste caught at the beginning of the wastewater treatment process. It allows you to reduce the amount of waste generated by more than 10 times. And they get to Czajka a lot, as much as 200,000 tonnes a year - the daily amount of solid waste is as much as 273 tonnes. The combustion of sewage sludge "Czajka" produces energy (1.96 MW from sludge combustion), as well as biogas, which is also used for energy purposes on site (5.66 MW from biogas combustion).
When we realize the scale of waste going to the sewage system, it will be easier for us to make decisions about restrictions:
- do not throw into the toilet bowls: cotton pads, ear sticks, sanitary pads, tampons and any other hygiene products.
You cannot throw dental floss and dressings in the toilet, which are probably the most commonly thrown away bathroom waste. They consist almost entirely of plastics, so they are virtually impossible to decompose. They also pose a threat to birds.
- do not throw cigarette filters into the toilets.
Toxic compounds, which are components of cigarettes and filters, poison groundwater as well as flora and fauna. One cigarette filter (containing: carcinogenic benzo (a) pyrene, arsenic, nicotine, heavy metals) completely poisons biological life in 1 liter of water. 
- we should absolutely not throw away or pour any medicine into the toilet bowl
Another problem that we throw unfortunately into the toilet, and sewage treatment plants deal with it very poorly, are medicines. . Medications in the light of the law, which also has a logical and pro-environmental justification, should be disposed of only in places adapted for this: in municipal Points of Selective Municipal Waste Collection (PSZOK) or in pharmacies - into special containers
Almost all drugs contain substances called problem in light of wastewater treatment. Most drugs dissolve easily in water, this is how they work in the body. This often leads to unpredictable biochemical changes. The risk is always greater if a larger portion of the same drug is directed into the environment. Water ecosystems are most at risk, especially standing waters such as ponds and lakes as well as soil waters, where local concentrations of some substances may be high.
Most active drug substances decompose for a long time in the environment. Therefore, a discarded drug that has not undergone changes in the body is definitely more dangerous than its remains excreted and dispersed by the body. 
We also should not throw food residues, fats, oils, building residues (plaster, plaster, paint), textiles and ... cat litter into the toilet bowls.
All these substances clog sewer pipes. By clogging (sealing), they form solids that are difficult to remove and reduce the light of the transmission pipe.
Remember that everything that flows into rivers flows further into the Baltic Sea. Since 2017, REC Polska has been participating in the BEST project - (Better Efficiency for Industrial Sewage Treatment). We deal with improving the efficiency of industrial wastewater treatment, although we do not forget about municipal wastewater, which usually contains part of the industrial wastewater. Design experience shows that failures occur even in the most modern infrastructure. However, the most important preventive and corrective actions of failures should be mentioned - good cooperation.