"stringent legislation" is a correct and usable phrase in written English.
It can be used to refer to laws or rules that are extremely strict or harsh. For example: "The new stringent legislation made it difficult for people to get the permits they needed."
There is very stringent legislation that festival organisers need to meet to stage a festival.
The increasing energy demand and more stringent legislation for engine pollutant emissions with the use of carbon-neutral fuels have forced to use alcohol.
The rising cost of energy, combined with increasingly stringent legislation to reduce greenhouse gas emissions is driving the UK process industries towards increasing energy efficiency.
There are a number of reasons for growing engagement with the sustainability agenda, including increasingly stringent legislation and targets for costs savings.
Representative Carolyn B. Maloney, Democrat of New York, introduced more stringent legislation this spring requiring banks to notify customers before they overdraw their accounts.
However in the near future more stringent legislation in the EC and USA poses some major challenges for the diesel passenger car which will be difficult to meet without secondary systems.
With the issues of increasingly stringent legislations on sulfur level in transportation fuels, clean fuels research including desulfurization has become a more important subject of environmental catalysis studies.
Owing to the increasing stringent legislations and national and international standards on health and safety, a number of emerging surface engineering processes (e.g., physical vapor deposition) have been developed recently.
Whilst focus in the past could be put on improving only the engine efficiency, more stringent legislations coming into force have led to a shift in focus towards reduced emissions altogether, focusing on all of nitrogen oxides (NOx), sulphur oxides (SOx) and carbon dioxides (CO2).
The Netherlands, too, boasts stringent reuse legislation.
Stringent new legislation for wastewater treatment plants (WWTPs) is currently motivating innovation and optimization of wastewater treatment technologies.
