What bases are harmful to the environment?

Harmful bases to the environment include strong alkalis like sodium hydroxide and potassium hydroxide, which can cause severe damage to aquatic ecosystems through increased pH levels and toxicity to aquatic life. Additionally, ammonia, though a weak base, can lead to eutrophication in water bodies, disrupting ecosystems by promoting excessive algae growth. Industrial waste containing these bases can contaminate soil and water sources, posing risks to human health and biodiversity. Proper disposal and treatment are essential to mitigate their environmental impact.