Material tests

Dipl.-Ing. Daniel Verschitz

Head of Material Testing
  +49 241 75082-29

The materials listed in the standard for tanks of small wastewater treatment plants are varied as the possible treatment processes themselves. The materials allowed range from classic reinforced concrete, via fibre-reinforced plastics through to stainless steel.

All materials, or containers and tanks manufactured from them, have to prove their suitability in terms of their intended use. In addition to tests for structural behaviour and water tightness, there are also the proof of reaction to fire, durability and a leaching test to verify if any dangerous substances are present.

PIA GmbH has partners and co-operative bodies throughout Europe and can provide the appropriate material tests and the required expertise, wherever needed.

Recent News



New legal developments in France for small wastewater treatment plants

For manufacturers of small wastewater treatment plants, the requirements for the approval of their products in France could soon change. At present, the following decree has been submitted to the relevant authorities in Brussels for approval:

“ORDER of […] amending the Order of 7 September 2009 laying down the technical specifications applicable to individual sewerage systems receiving a gross load of organic waste less than or equal to 1.2 kg/day of BOD5 and the Order of 27 April 2012 on the implementing procedures for the inspection of individual sewerage installations”

This decree essentially relates to systems and plants that cannot be CE marked. According to Article 8, the following conditions apply to systems:

To perform the treatment, the system shall include

  • a primary treatment device, built in situ or prefabricated;
  • a secondary treatment device using the purifying power of the soil.

This applies only to systems complying with EN 12566-2 (soil infiltration systems) or EN 12566-5 (filtration systems for pre-treated domestic wastewater). The decree regulates, among other things, requirements for the test programme (44 weeks in total), wastewater pre-treatment and inlet and outlet concentrations.

The simplified assessment procedure described in Appendix 3 of the decree applies to all treatment systems according to hEN 12566 Part 3 or Part 6. The basis for the assessment is the 38-week test programme corresponding to the initial type testing of the standard. The simplified assessment regulates among other things

  1. A standard test performed without desludging shall be demonstrated.
  2. There is a new evaluation procedure for the effluent concentrations for the parameters BOD5 and SS for which the value Lsup must be calculated (Lsup = m 1.34 x s; m = mean value; s = standard deviation - for details see appendix 3 of the decree)
  3. The evaluation of inlet quality which previously only included BOD5 must now also include the additional parameters COD and SS.

Coronavirus information

PIA is continuously monitoring relevant developments associated with the spread of the Coronavirus and has taken preventive action to safeguard personnel and to ensure the continuation of all testing services.

Testing is currently carried out without constrictions and new orders may be placed as usual. Should any issues arise which might impact our ability to carry out testing services in the future, we will immediately notify all affected customers.

To protect the health of all associated personnel we kindly ask to refrain from any non-scheduled site visits or unannounced deliveries, unless mutually agreed on beforehand.

We will gladly be available for regular communications via telephone and email.
If you require further information, please feel free to contact us as at any time.

Stay safe and healthy!
The PIA-team


Irish Market Surveillance Campaign 2019


The Department of Housing, Planning and Local Government has announced a Market Surveillance Campaign in 2019:

The Market Surveillance Authorities responsible for the Construction Products Regulations are carrying out a Market Surveillance Campaign, with the support of the National Building Control Office and The Department of Housing, Planning and Local Government. These campaigns support compliant business and ensure that safe, reliable products are placed on the Irish Market. They also have the effect of regularising bad practice and facilitating a level playing field for business.

The objective of the Market Surveillance Authority is to ensure that only products compliant with the Construction Products Regulation (EU) No 305/2011, are placed on the market.
If you receive a visit, the Market Surveillance Authority will primarily check that you have applied the CE Marking correctly and that you have all the required documentation in place. Please see the attached information note for further details.


For more detailed information, contact the Department of Housing, Planning and Local Government:

Building Standards
Department of Housing, Planning and Local Government

Custom House
Dublin 1
D01 W6X0

Tel: +353 1 888 2000


Market Surveillance Campaign information note [PDF]