Type Approval

PIA offers tests for type approval of waste water treatment systems in cooperation with flag state administrations and classification societies according to national and international standards.

An overview about the effluent standards is given in the following table:


* 100 mg/l when tested onboard, 50 mg/l when tested ashore

** no visible floating solids

*** applicable to passenger ships which operate in MARPOL Annex IV special areas and which intend to discharge treated sewage effluent into the sea

  MEPC.2(VI)MEPC.159(55)MEPC.227(64)Type IType IIAlaska
    since 2003 since 2010 since 2016      
BOD5 [mg/l] 50 25 25 Qi/Qe - - 30
COD [mg/l] - 125 125 Qi/Qe - - -
TSS [mg/l] 100* 35 35 Qi/Qe -** 150 30
coliforms [cfu/100ml] 250 100 100 Qi/Qe 1000 200 20
residual chlorine [mg/l] - 0,5 0,5 - - 0,01
pH [-] - 6,0 - 8,5 6,0 - 8,5 - - 6,0 - 9,0
Ntot [mg/l] - - 20 Qi/Qe - - -
Ptot [mg/l] - - 1 Qi/Qe - - -

Recent News



Joint paper on non-conformities with marine sewage regulations for greywater

The paper explores non-conformities with marine sewage rules. It follows previous joint-papers on chlorination disinfection without de-chlorination, no-sludge and recirculation-via-influent. These non-conformities are widening the gap between rules and realities.

The article Opinion: Grey Water Related Non-Conformities Need to be Addressed can be accessed via the following link:

For further information, please refer to the following related publications:



Seventh HELCOM Cooperation Platform on PRF in the Baltic Sea

Seventh HELCOM Cooperation Platform on Port Reception Facilities (PRF) in the Baltic Sea meeting will be held at the premises of the Federal Maritime and Hydrographic Agency (BSH) on Wednesday, 13 September 2017. Contracting Parties to the Helsinki Convention, Observer Organizations as well as other public sector institutions and relevant stakeholders are invited to the meeting of HELCOM Cooperation Platform.

The meeting will particularly focus on the ongoing project of the developement of a “Best Practice Guidance for the handling of wastewater in Ports" for the Special Area Baltic Sea, as well as the results of the CLIA simulation exercise on MARPOL Annex IV Special Area and practical case studies of specific ports, including proposals for next steps for consideration by HELCOM MARITIME 17-2017.

Practical information for participants and the provisional programme are available on the CP PRF 7-2017 Meeting Site in HELCOM Meeting Portal.

Amendments to resolution MEPC.227(64) adopted

On its seventieth session the Marine Environmental Protection Committee (MEPC) adopted resolution MEPC.284(70) on Amendments to the 2012 Guidelines on implementation of effluent standards and performance tests for sewage treatment plants. The resolution includes new forms of certificates of the type approval for sewage treatment plants. Compliance with the special area requirements in regulation 9.2.1 of MARPOL Annex IV is now certified on a separate certificate of type approval.
The Baltic Sea Special Area will take effect on:
- 1 June 2019 for new passenger ships;
- 1 June 2021 for existing passenger ships other than those specified below; and
- 1 June 2023 for existing passenger ships en route directly to or from a port located outside the special area and to or from a port located east of longitude 28˚10' E within the special area that do not make any other port calls within the special area.

International Convention for the Control and Management of Ships' Ballast Water and Sediments (BWM Convention) will enter into force on September 8th, 2017

On 8 September 2016 the IMO announced in a press release that the Ballast Water Management Convention would go into effect on 8 September 2017. Ratification of the BWM Convention by Finland has triggered a key international measure for environmental protection that should stop potentially invasive aquatic species from spreading in ships’ ballast water. The accession brings the combined tonnage of contracting states to the treaty to 35.1441%, with 52 contracting parties. The convention stipulates that it will enter into force 12 months after ratification by a minimum of 30 states, who represent 35% of world merchant shipping tonnage.

Further information:
» IMO Press Briefing
» IMO In Focus: Ballast Water Management