Sewerage (PKD division 37)
This division includes:
- operation of sewage networks and wastewater treatment systems that collect, treat and discharge wastewater into water bodies or operate surface retention systems,
- operation of wastewater treatment systems for reuse purposes (for example for the treatment of agricultural, industrial, road-cleaning wastewater or collected rainwater).
Industry statistics (2025)
Number of companies
Companies (primary PKD)
1,049
Companies (secondary PKD)
22,523
Companies with financials
350
Legal structure
Legal formShare of companiesNumber of companies
- Sp. z o.o.85.7%819
- Sp. j.6.9%66
- S.A.2.8%27
- Sp. k.1.7%16
- Cooperative1.2%11
- Other0.9%9
- Foundation0.6%6
- Association0.2%2
Financial results
Median revenue
Ranking
Median revenue compared with other PKD codes.
Top companies by revenue
| # | Company | Legal form | Revenue | Net profit |
|---|---|---|---|---|
| 1 | S.A. | $209.36M | $6.16M | |
| 2 | sp. z o.o. | $63.63M | $4.58M | |
| 3 | sp. z o.o. | $60.89M | $2.96M | |
| 4 | sp. z o.o. | $36.61M | $3.26M | |
| 5 | sp. z o.o. | $31.51M | $510k | |
| 6 | sp. z o.o. | $27.15M | $407k | |
| 7 | sp. z o.o. | $27.09M | $1.55M | |
| 8 | S.A. | $27.08M | $2.94M | |
| 9 | sp. z o.o. | $24.69M | $494k | |
| 10 | sp. z o.o. | $20.59M | $1.02M |
PKD codes in this division
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