Juhna T, Kļaviņs M
Department of Environmental Engineering, Luleå University of Technology.
Ambio. 2001 Aug;30(4-5):306-14.
Long-term changes in the environmental quality of water in Latvia (chemical composition of inland waters, wastewater treatment, and drinking-water treatment practices and quality) as a response to socioeconomic changes have been studied. Water composition, the major factors influencing water chemistry, and human impacts (wastewater loading) were studied to determine changes that occurred after recent reductions in pollution emissions, particularly nutrient loading, to surface waters. After 1991, (Latvia regained independence in 1991) inland water quality has begun to improve mainly as a result of decreases in nutrient loads from point and nonpoint sources and substantial efforts in the area of environmental protection. The situation differs, however, for drinking-water treatment, where practices have also changed during the whole period from 1980 till 2000. More stringent drinking-water-quality standards and novel insights regarding changes in water quality in the distribution network, necessitate further improvements in public water supply, and place this particular water issue among Latvia's main priorities.
针对社会经济变化，对拉脱维亚水质环境质量的长期变化（内陆水域的化学成分、废水处理、饮用水处理实践及质量）展开了研究。研究了水的成分、影响水化学性质的主要因素以及人类影响（废水排放），以确定近期污染排放尤其是向地表水的营养物排放减少后所发生的变化。1991年以后（拉脱维亚于1991年重新独立），内陆水质开始改善，这主要是由于点源和非点源营养物负荷的减少以及环境保护领域的大量努力。然而，饮用水处理的情况有所不同，在1980年至2000年的整个期间，饮用水处理实践也发生了变化。更严格的饮用水质量标准以及关于配水管网水质变化的新见解，使得公共供水需要进一步改善，并将这一特定的水问题置于拉脱维亚的主要优先事项之中。
