"Non-residential sewer service" means sewer utility service that is not residential sewer service.
"Non-residential water service" means water utility service that is not residential water service.
"Residential sewer service" means sewer utility service for household purposes delivered to a dwelling of 2 or fewer units that is billed under a residential rate; or sewer service for household purposes delivered to a dwelling unit or units that is billed under a residential rate and is registered by a separate meter for each dwelling unit.
"Residential water service" means water utility service for household purposes delivered to a dwelling of 2 or fewer units that is billed under a residential rate; or water service for household purposes delivered to a dwelling unit or units that is billed under a residential rate and is registered by a separate meter for each dwelling unit.
In its use of federal funds under this Act, the Department may not cause a disproportionate share of those federal funds to benefit customers of water or sewer providers that do not assess the Water and Sewer Assistance Charge.
305 ILCS 21/25