Marie Polyester - Producent oczyszczalni, szamb , toalet


Formal requirements
1.It is required to check in the District or County Office whether the development and management conditions for the area permit the building of a sewage treatment plant

2.Before choosing the type of a household-adjacent sewage treatment plant for a particular plot one should obtain information about the land conditions (including groundwater level and fluctuation), size of the plot, water sources, possible sewage receivers in the vicinity (pond, drainage ditch) and the development conditions on the plot and in the vicinity.

In order to independently determine ground conditions a percolation test must be conducted.

Course of the inspection:
•    -We determine the place where the sewage treatment plant is to be located and dig a ditch there 60-90 cm. in depth.
•    -At the bottom of the ditch we dig another hole, measuring 30x30 cm and 15 cm. deep.
•    -The walls and bottom of the hole should be moisturized: we pour at least 10 l. of water into it; for a full correctness of the test results we should then wait until the water stops permeating into the soil.
•    -On the wall of the hole we mark a height of 12,9 cm from the bottom (for ex. with a stick).
•    -We pour 12,5 l. of water into the hole. The height of the water pillar will equal 13,9 cm.
•    -We measure the time of  water infiltration with a timer. Due to the possibility of it being time consuming, we start measuring when the water subsides 10 mm (when it reaches the marked level of 12,9 cm).

Knowing the time of water infiltration into the soil we can determine the soil permeability according to the chart:

Infiltration time  for 12,5 l.
of water [min.]		 Infiltration time  for 10mm
of water [min.]		 Soil type
A 2 do 0,2 (12 sek.) Gravel, mine run, rubble, cracked rock
B 2 - 18 0,2 - 1,5 Thick and medium sand
C 18 - 180 1,5 - 13 Fine sand, loess
D 180 - 780 13 - 60 Clay and dusty sand
E Over 780 Over 60 Sandy clay, clay, loam



Secondly, the level of groundwater can be categorized (estimated) as  ‘high / low’. The first possibility is simply to look around to check the actual state of the adjacent premises. If the groundwater level is high, the basements of nearby houses are periodically flooded or simply there are none. One can inspect the natural flora of the area – on undeveloped marshy areas the flora is typically aquatic: reed, bulrush. On sandy and dry areas with a low level of groundwater there are typically pine forests.

In order to precisely inspect the ground conditions of our plot we may commission an inspection by a specialized geologist. The inspection consists of making at least one geological bore-hole,  on which a very precise estimation of the type of soil and thickness of it’s particular layers, as well as the level of groundwater is subsequently made.

3.In the Architecture Department of the local County or District Office an application form informing of the intended building must be presented, which must include the type, range and manner of performing the works and the time of  commencement. The following documents must be enclosed:
-declaration of administering rights for the property for building purposes, often supported by an extract from a land-roll
-proper designs or drawings of the investment; permits, agreements and opinions required due to separate regulations
In most County (City) Offices additional documents will be required:
-basic map with the appropriate solution drawn (you can obtain the map in the local civil  engineering department)
-technical plan for the appliances  - may be taken from the materials of the company from which you are making a purchase
-appliance certificates
-a legal permit for water utilization (if required).
The application form must be presented at least 30 days before the planned building. ( This is the usual amount of time the office has for considering the  application.)  If the investor does not receive any document within that time, the application is automatically regarded as  accepted. The office will inform the investor only in the following two cases:
•    -if there is a need for the investor to produce supplementary documents
•    -if the application has been declined.

The reasons for a decline may be as follows:
•    -the investment encroaches upon the special management plan
•    -the investment requires a building permit (for ex. if it is bothersome for adjoining areas)
•    -the investor, despite summons, failed to submit the required   missing documents.

The building process must begin at most in 2 years time from the time of commencement stated in the application. If that proves impossible, the application must be presented again.

Construction of a household-adjacent sewage treatment plant is an ecological and economically effective operation. Because of that it is possible to receive funding for such an investment from various sources. The most beneficial funding comes from County or European Union funds, less profitable are preferential credits and loans. It is best to inquire in the county for the possibility of receiving funding before presenting the building application.