According to the Water Supply Act, a property in the water supply plant's operating area must be connected to the plant's water mains and sewers and, as decided by the municipality, to the plant's storm water drain in the water supply plant's stormwater drainage area. The municipality's environmental protection authority (environmental inspector in Riihimäki) grants the property an exemption from the obligation to join.
However, outside of the agglomeration, the property does not need to be connected to the water main of the water supply facility if the property's water supply system was built before the approval of the water supply facility's operating area and the property has sufficient domestic water that meets the quality requirements stipulated in the Health Protection Act.
Outside the agglomeration, the property does not need to be connected to the water supply plant's wastewater sewer, if the property's water supply system was built before the approval of the water supply plant's operating area and the management and treatment of waste water complies with the provisions of the Environmental Protection Act, or the property does not have a water toilet and the management and treatment of its waste water complies with the provisions of the Environmental Protection Act.
Exemption from connection to the water supply and sewage system
Exemption from the obligation to attach must be granted if:
- connection to the network would be unreasonable for the owner or occupier of the property, when taking into account the costs of building the property's water supply equipment, the costs of connection, the low need for the services of the water supply facility or another similar special reason
- the release does not jeopardize the financial and proper management of the water supply facility in the area of operation of the water supply facility
- and in addition
- the property to be exempted from connection to the water main has sufficient domestic water available that meets the requirements or
- The management and processing of waste water from a property exempted from connection to a waste water sewer can be organized in accordance with the requirements laid down in the Environmental Protection Act
Exemption can be applied for in writing form or electronic permit service via the environmental permits section. The water supply facility and the owner or keeper of the property are consulted on the application, and the opinion of the health protection authority is requested on the application.
Exemption from connecting to the storm water sewer
As decided by the municipality, the property located in the area of the water supply plant's storm water drainage must be connected to the plant's storm water drainage. The municipal environmental protection authority can, upon application, grant the property an exemption from the obligation to connect to the storm water drain.
Exemption from the obligation to connect to the storm water sewer is granted if:
- connection to the storm water sewer would be unreasonable for the owner or occupier of the property, taking into account the costs incurred from the management of the property's storm water, the costs incurred from the connection, the small need for storm water drainage from the water supply facility, or another similar special reason;
- the release does not jeopardize the economic and proper management of stormwater drainage in the stormwater drainage area of the water supply facility referred to in § 17a; and
- the stormwater of the property to be exempted from annexation can otherwise be removed appropriately.
Exemption is applied for in writing form or electronic permit service via the environmental permits section. Before the exemption is granted, the water supply facility and the owner or holder of the property will be given an opportunity to be consulted.