
Figure 1.
Sewage annual output in the division into urban and agricultural lands (own study based on [1])

Figure 2.
Location of Nowy Dwór and Dąbrowa Białostocka communes in Sokólski District [3]

Figure 3.
Waterworks length in Dąbrowa Białostocka and Nowy Dwór Communes in 2008-2016 (own study based on [1])

Figure 4.
Sewage system length in 2008–2016 in Dąbrowa Białostocka and Nowy Dwór Communes (own study based on [1])

Figure 5.
Percentage use of sewage management systems in Nowy Dwór Commune (own study based on [1])

Figure 6.
Percentage use of sewage management systems in the rural area of Dąbrowa Białostocka Commune (own study based on [1])