Conn. Gen. Stat. § 7-402

(b) Any person, other than a public official, who receives, has control of, or is the custodian or trustee of, public funds promptly following the receipt or other acceptance of such public funds shall request the authority specified in this subsection to designate one or more depositories permitted under subsection (a) of this section as a depository for the whole or any part of such funds. The authority shall be (1) the board of selectmen, if the funds belong to a town that does not have a charter, special act or home rule ordinance relating to its government, (2) the first selectman, mayor or other chief executive officer described in a charter, special act or home rule ordinance relating to the government of a city, consolidated town and city, consolidated town and borough or a town having a charter, special act or home rule ordinance relating to its government, if the funds belong to such an entity, (3) the regional board of education, if the funds belong to a regional school district, (4) the warden, if the funds belong to a borough or (5) the chairman of the executive committee or other chief executive officer, if the funds belong to a district, metropolitan district or other municipal corporation. Such authority, upon the receipt of such request, may, in writing, designate one or more depositories and may, within the limitations of this section, specify the public fund or funds and the maximum amount thereof which may be deposited in each of such depositories. The instrument designating such depository or depositories shall be filed in the office of the town clerk in the case of a town and with the clerk of any other municipality. Such authority may, at any time, in writing, revoke such designation and may designate one or more other depositories. Prior to the designation by such authority of a depository, the person making such request may, within the limitations of this section, deposit public funds in any depository permitted under subsection (a) of this section. All deposits of public funds shall be in the name of the municipality or in the official name of the fund, person or trustee. The interest or pecuniary consideration such depository allows for or upon such deposit of public funds shall belong to and accrue to the benefit of the municipality or to the corpus of the fund held in trust.

(c) If the laws of this state have, in all other respects, been complied with, any person acting on behalf of, or as custodian or trustee for, any municipality, who deposits public funds in any depository shall, because of failure, insolvency, receivership, forced closing or restricted operation of such depository, or a bank and credit union holiday or banking emergency proclaimed under the provisions of the laws of the United States or of this state, be relieved of personal responsibility for public funds so deposited and the surety or sureties upon the bond of such person shall be likewise relieved to the same extent as such person. The provisions of this section shall not be construed to relieve any such person or such person's surety or sureties from the obligation to account for the whole or such part of public funds so deposited as and when the same may be obtained by such person from such depository.

See Secs. 3-24 and 4-33 re deposit of funds by State Treasurer and by other public officials, respectively.