LIHWAP provides one-time payments to low-income households that are eligible for assistance. The size of a benefit can vary depending on the past due balance of the household’s residential water and wastewater bills. 

In addition, program participation is limited to households receiving services from water and wastewater providers enrolled in LIHWAP to receive the payment of assistance benefits.
Households that qualify for LIHWAP could reduce their water or wastewater charges, or both if their bills include both services, by up to $2,000.

More information here