Pohjaveden laatua uhkaavat tekijät

Abstract

Pohjavesi on tärkeä uusiutuva luonnonvara suomalaisille. Suurin osa pohjavesialueista on pintamaalajiltaan hyvin vettä läpäiseviä, mikä tekee niistä herkästi likaantuvia. Pohjaveden likaantuessa päästön havaitseminen voi olla vaikeaa, minkä vuoksi haitallinen aine voi ehtiä likaamaan aluetta laajalti.

Tässä opinnäytetyössä on esitelty pohjaveden laatua uhkaavia tekijöitä sekä pohjaveteen liittyvää lainsäädäntöä. Työ piti sisällään Water Safety Planin ja Sanitation Safety Planin laatimisen Rauman Vedelle. Suunnitelmissa tunnistettiin vesihuoltolaitosta mahdollisesti uhkaavat riskit ja etsittiin niille hallintakeinot. Lisäksi suunnitelmiin sisällytettiin jo olemassa olevia laitoksen hallintakeinoja. Suunnitelmien avulla Rauman Vesi täyttää lainsäädännöllisen velvoitteensa olla selvillä käyttämänsä raakaveden määrään tai laatuun kohdistuvista riskeistä. Työ on liitteiden osalta luottamuksellinen.

Groundwater is a significant renewable resource for Finnish people. In most areas where groundwater is found, the water table is easily contaminated due to permeability. If groundwater becomes contaminated, detection of pollutants can be difficult, which makes it more likely that a harmful substance could spread on a wide scale. This thesis illustrates the factors threatening the quality of groundwater and the legislation related to groundwater. The Water Safety Plan as well as the Sanitation Safety Plan for Rauma’s Water created specifically for the purposes of this thesis, are contain within. The plans identified a potential threat to the water supply plant and looked for means of management as well as ways to alleviate this risk. In addition, current plant management tools were taken into account. The plans allow Rauma’s Water to meet its legislative obligations as well as to continue risk assessment to the quantity and quality of raw water. Confidential in Annexes.

Groundwater is a significant renewable resource for Finnish people. In most areas where groundwater is found, the water table is easily contaminated due to permeability. If groundwater becomes contaminated, detection of pollutants can be difficult, which makes it more likely that a harmful substance could spread on a wide scale.

This thesis illustrates the factors threatening the quality of groundwater and the legislation related to groundwater. The Water Safety Plan as well as the Sanitation Safety Plan for Rauma’s Water created specifically for the purposes of this thesis, are contain within. The plans identified a potential threat to the water supply plant and looked for means of management as well as ways to alleviate this risk. In addition, current plant management tools were taken into account. The plans allow Rauma’s Water to meet its legislative obligations as well as to continue risk assessment to the quantity and quality of raw water. Confidential in Annexes.