A. When the public interest or convenience requires, the board of directors of an improvement district may order:
1. The whole or any portion, either in length or width, of one or more of the streets of the district graded or regraded, paved or repaved, landscaped or otherwise maintained, improved or reimproved.
2. The acquisition, construction, reconstruction or repair of any street, tunnel, subway, viaduct or conduit in, on, under or over which the district may have an easement or right-of-way therefor.
3. The construction or reconstruction of sidewalks, crosswalks, curbs, gutters, culverts, bridges, tunnels, siphons, manholes, steps, parkings and parkways.
4. The placement, replacement or repair of pipes, hydrants and appliances for fire protection.
5. The acquisition, construction, reconstruction, maintenance or repair of wastewater treatment facilities, sewers, ditches, drains, conduits, pipelines and channels for sanitary and drainage purposes, with outlets, cesspools, manholes, catch basins, flush tanks, septic tanks, connecting sewers, ditches, drains, conduits, channels and other appurtenances in, under, over or through any street or any land of the district or any right-of-way granted or obtained for such a purpose, either within or without the district limits.
6. The acquisition, construction, reconstruction, maintenance or repair of waterworks, including drinking water treatment facilities, for the delivery of water for domestic purposes, and of wells, ditches, canals, channels, conduits, pipelines and siphons, together with the necessary or usual appurtenances for carrying storm water or water from irrigation ditches, watercourses, streams or springs into, through or out of the district in, under, over or through any street, or any land of the district or any right-of-way granted or obtained for such a purpose, either within or without the district limits. This section does not prohibit the board of directors of an improvement district from purchasing an existing domestic water delivery system within the district or outside the district or constructing an initial or improving an existing domestic water delivery system inside or outside the district.
7. The construction, reconstruction or repair of breakwater levees or walls, riverbank protection or replacement of riverbanks and supporting land. A district established for this purpose shall cooperate and coordinate its plans and activities with the county flood control district established in the county and any incorporated city or town in which the district is established.
8. The acquisition, construction, reconstruction or repair of lighting plants and poles, wire conduits, lamps, standards and other appliances for the purpose of lighting and beautifying streets or other public lands.
9. The construction, reconstruction or repair of any work incidental to or connected with any improvement.
10. The acquisition, in the name of the district, by gift, purchase or otherwise and the maintenance, repair, improvement or disposal of any real or personal property necessary or convenient for district operation for a community center, park or recreational area.
11. Pursuant to section 48-902, the board of directors of an improvement district may contract for or in any other manner provide transportation services within the district.
B. In addition to the powers specifically granted by or reasonably inferred from this article, an improvement district through its board of directors may:
1. Acquire by gift, purchase, condemnation or otherwise in the name of the district and own, control, manage and dispose of any real or personal property or interest in the property necessary or convenient for the construction, operation and maintenance of any of the improvements provided for by this article.
2. Join with any other improvement district, any city, town, governmental agency or Indian tribe, or any agency or instrumentality of an Indian tribe, or any person in the construction, operation or maintenance of any of the improvements hereby authorized.
3. Join with any other improvement district or any city, town, county or Indian tribe, or any agency or instrumentality of an Indian tribe, in improving streets running on or along the boundary of the district and levy assessments and issue bonds for the district's part of the cost of those improvements.
4. Sell, lease or otherwise dispose of any property of the district or interest in the property when the property is no longer required for the purposes of the district or the use of which may be permitted without interfering with the use thereof by the district.
5. Sell or otherwise dispose of any property or material acquired in the construction or operation of any improvements as a by-product or otherwise, and acquire rights-of-way for the disposal by condemnation or otherwise.
6. Accept from this state or the federal government, or any agency, department or instrumentality of either, grants for or in aid of the construction of any of the improvements provided for by this chapter.
7. Notwithstanding any other law, sell improvement bonds to the federal government, or any agency, department or instrumentality of the federal government, for the construction of any of the improvements provided by this chapter.
8. Enter into contracts with this state or the federal government, or any agency, department or instrumentality of either or both, for the construction or supervision of construction by the state of Arizona or the federal government, or any agency, department or instrumentality of either or both, but reserving to the district the right to assess against the property benefited by the improvement, and located within the district, that portion of the cost of the improvement that does not qualify for aid under a state or federal grant.
9. Operate, maintain and repair the streets within the district and any improvements made pursuant to this chapter.
10. Do all things incidental to the exercise of the powers granted by this article.
C. A county improvement district formed for the purpose of purchasing an existing or constructing a new domestic water delivery system within the district or outside the district shall have the same authority and responsibility as an incorporated city or town pursuant to title 45 and chapters 22 and 28 of this title.
D. An improvement district that proposes to provide domestic water service within the certificated area of a public service corporation serving domestic water shall provide just compensation to the public service corporation pursuant to section 9-516 for the facilities or certificated area taken. The right to compensation for a public service corporation from an improvement district shall not apply if no facilities of the public service corporation are actually acquired by the improvement district and either of the following conditions exist:
1. At the time the law providing for compensation became effective the certificated area for which compensation is sought is an area that was within the boundaries of an improvement district.
2. A certificate is issued to a public service corporation for any area that is within an improvement district at the time the certificate is issued.
E. If the county board of supervisors determines that the public interest or convenience so requires, an improvement district that is formed for the purposes of providing domestic water service pursuant to article 4 of this chapter may also provide domestic wastewater service.