Inspections of domestic wastewater treatment plants were mainly connected with the older Czech regime for plants built under notification. For such plants, regular laboratory analyses were usually replaced by an inspection by an authorised person once every two years, with the report submitted to the water authority.
This text therefore has to be read as historical context. The regime for new domestic WWTPs notified under the former Section 15a of the Czech Water Act is no longer current. If you have an older plant approved in this way, do not rely only on a general article. Find the original notification, the authority's consent and the conditions issued to you. Those documents determine whether and how inspections must still be documented.
What an inspection usually checked
- whether the installed plant is the same type as in the documentation,
- whether the plant is operated according to the manufacturer's manual,
- the condition of the blower, aeration, sludge handling and effluent,
- whether the owner maintains the equipment and does not modify it in a way that worsens performance.
For newer or differently permitted plants, follow the specific decision, discharge permit and operating rules. If you are unsure, the safest step is to call the relevant Czech authority and ask about the current duties for your particular plant.