How many companies have PKD 37.00.Z?

The primary industry for 2,547 companies is sewerage. 344 entities have filed financial statements.

How many new companies were registered in 2026?

So far in 2026, 98 new companies with PKD 37.00.Z have been registered. In all of 2025, there were 141 such companies.

How many companies were deregistered in 2026?

So far in 2026, 27 companies with PKD 37.00.Z have been deregistered. In all of 2025, there were 9 such companies.

What revenue do companies in this industry generate?

In 2025, the median revenue for PKD 37.00.Z was USD 2.61m and the mean revenue was USD 8.46m, based on 284 financial statements. Averages and medians include only companies that file financial statements, excluding sole proprietorships.

Are companies with PKD 37.00.Z profitable?

Yes, in 2025, the median net profit was USD 49.21k, an improvement on 2024 (USD 33.77k). Among all 674 industries in Poland, PKD 37.00.Z ranks 77th, putting it in the top 11%.

What legal form do companies in this industry take?

The most common legal form for PKD 37.00.Z is a sole proprietorship, used by 2,050 companies in this industry (80.5% of the total). In second place is sp. z o.o. (446 companies, 17.5%), and in third place – sp. j. (13 companies, 0.5%).

Sewerage (PKD 37.00.Z)

This subclass includes:

operation of sewage treatment systems for reuse (for example agricultural, industrial waters, water from road cleaning or collected rainwater); for artificial recharge, replenishment of groundwater reservoirs,
collection and transport of sewage from users (for example households, industrial business entities),
collection and transport of rainwater by means of sewer networks, collectors, tanks and other means of transport (for example vacuum tanker vehicles),
maintenance and cleaning of sewerage and drainage systems, including pipe clearing,
freeze-drying (lyophilisation) of sewage sludge in sewage treatment plants,
emptying and cleaning of cesspools, septic tanks, pits and putrefaction tanks of sewage,
maintenance of chemical toilets.

This subclass excludes:

further processing of sludge extracted from sewage, classified in the relevant subclasses of division 38:
- anaerobic digestion, classified in the relevant subclasses of group 38.2,
- aerobic treatment, such as composting, classified in 38.21.Z,
- incineration of waste with energy recovery, classified in 38.22.Z,
- incineration of waste without energy recovery, classified in 38.31.Z,
decontamination of surface water and groundwater at the place of contamination, classified in 39.00.Z,
construction or repair of sewer systems, classified in 42.21.Z,
cleaning and unblocking of water and sewage installations in buildings, classified in 43.22.Z,
rental of portable toilets, classified in 77.39.Z.

Industry statistics (2025)

Number of companies

Companies

14,560

Companies (primary PKD)

2,547

Companies with financials

344

Business turnover

Legal structure

Legal formShare of companiesNumber of companies

JDG80.5%2,050
Sp. z o.o.17.5%446
Sp. k.0.5%13
Sp. j.0.5%13
S.A.0.4%11
Cooperative0.3%7
Foundation0.2%4
Other0.1%2
Association0.0%1

Financial results

Median revenue

Ranking

Median revenue compared with other PKD codes.

Top companies by revenue

#	Company	Legal form	Revenue	Net profit
1	Miejskie Przedsiębiorstwo Wodociągów I Kanalizacji w M.St. Warszawie	S.A.	USD 447.72m	USD 8.76m
2	Aquanet	S.A.	USD 209.36m	USD 6.16m
3	Miejski Zakład Komunalny	sp. z o.o.	USD 69.48m	USD -4.20m
4	ALBA Miejskie Przedsiębiorstwo Gospodarki Komunalnej	sp. z o.o.	USD 66.12m	USD 6.46m
5	Miejskie Przedsiębiorstwo Wodociągów i Kanalizacji w Lublinie	sp. z o.o.	USD 63.63m	USD 4.58m
6	Wodociągi I Kanalizacja w Opolu	sp. z o.o.	USD 60.89m	USD 2.96m
7	TOI Toi Polska	sp. z o.o.	USD 52.61m	USD 3.48m
8	Przedsiębiorstwo Gospodarki Wodnej i Rekultywacji	S.A.	USD 40.65m	USD 177.25k
9	WC Serwis Polska	sp. z o.o.	USD 37.07m	USD 3.92m
10	Miejskie Przedsiębiorstwo Gospodarki Komunalnej - Krośnieński Holding Komunalny	sp. z o.o.	USD 36.61m	USD 3.26m

Fastest-growing companies

#	Company	Legal form	Revenue	Y/Y growth
1	IN-Drill	sp. z o.o.	USD 6.53m	+172.7% y/y
2	Aquabellis	sp. z o.o.	USD 4.60m	+65.3% y/y
3	Łobeskie Przedsiębiorstwo Komunalne	sp. z o.o.	USD 4.62m	+51.9% y/y
4	ALBA Miejskie Przedsiębiorstwo Gospodarki Komunalnej	sp. z o.o.	USD 66.12m	+34.9% y/y
5	Wodociągi I Kanalizacja w Opolu	sp. z o.o.	USD 60.89m	+34.4% y/y
6	Zakład Usług Komunalnych	sp. z o.o.	USD 3.17m	+26.7% y/y
7	Remondis Hydrokan	sp. z o.o.	USD 2.87m	+24.0% y/y
8	UGOS Service	sp. k.	USD 4.77m	+23.2% y/y
9	Zakład Wodociągów i Kanalizacji Sława	sp. z o.o.	USD 4.91m	+21.9% y/y
10	Miejski Zakład Komunalny	sp. z o.o.	USD 69.48m	+21.8% y/y

Stock market

No companies from this industry are listed.