(1) snow, ice, or rubbish removal from sidewalks;
(2) weed elimination from streets or private property;
(3) removal or elimination of public health or safety hazards from private property;
(4) installation or repair of water service lines, street sprinkling or other dust treatment of streets;
(5) the trimming and care of trees and the removal of unsound trees from any street;
(6) the treatment and removal of insect infested or diseased trees on private property, the repair of sidewalks and alleys;
(7) the operation of a street lighting system;
(8) the operation and maintenance of a fire protection or a pedestrian skyway
system;
system;
(9) inspections relating to a municipal housing maintenance code violation;
(10) the recovery of disbursements for payment of utility bills and other services, even if provided by a third party, necessary to remedy violations; or
(11) the recovery of delinquent vacant building registration fees under a municipal program designed to identify and register vacant buildings.
This means, for example, if you allow weeds to grow in your lawn in violation of city code the city can specially assess your property for the cost of the removal.