1. A na-eji efere ihe ọṅụṅụ mmiri akpaaka maka ihe ọṅụṅụ anụmanụ dị ọcha na nchekwa mmiri
2. O nwere ike inye ehi, ehi, inyinya, nkịta wdg mmiri dị ọcha na ịdị ọcha
3. Mmiri na-ada nke ọmana ụbara, ka ahụ iru ala.
4. Plastic ihe, inogide, mfe iji na mgbe nchara,leakage.
5. Oke arụmọrụ, easy iji wụnye na kwatuo
6. Elu spraying antirust agba dị ka chọrọ.