Amended and Restated Supplemental Executive Retirement Agreement dated November 15, 2017 between The Connecticut Water Company and Kristen A. Johnson

a.    Normal or Deferred Retirement. If, upon or after the Employee’s attainment of age 65, the Employee shall separate from service and she shall be eligible to receive a benefit under The Connecticut Water Company Employees’ Retirement Plan (hereinafter referred to as the “Retirement Plan”), the Employee shall be entitled to receive pursuant to this Agreement a benefit having a value equal to an annual benefit for her life of (a) 60% of the Employee’s Average Earnings reduced by (b) the annual benefit payable to the Employee under the Retirement Plan in the form of a single life annuity for the life of the Employee (whether or not the benefit under the Retirement Plan is actually paid in such form), commencing at the same time as of which benefits commence hereunder (whether or not the benefit under the Retirement Plan commences at such time), and further reduced by the annual benefit payable to Employee under any qualified defined benefit plan maintained by Rockville Bank/United Bancorp in the form of a single life annuity on the life the Employee (whether or not the benefit under such plan is actually paid in such form) commencing at the same time as of which benefits commence hereunder (whether or not the benefit under such

plan commences at such time). Such benefit will be payable in accordance with Section 2 below. The date as of which benefits commence hereunder is the first day of the month following the Employee’s separation from service, even though actual payment may be delayed in accordance with Section 2 hereof.

b.    Early Retirement. If, upon or after the Employee’s attainment of age 55 and prior to attainment of age 65, the Employee shall separate from service and she shall be eligible to receive a benefit under the Retirement Plan, the Employee shall be entitled to receive pursuant to this Agreement a benefit having a value equal to an annual benefit for her life of (a) 60% of the Employee’s Average Earnings reduced by (b) the annual benefit payable to the Employee under the Retirement Plan in the form of a single life annuity for the life of the Employee (whether or not the benefit under the Retirement Plan is actually paid in such form) commencing at age 65 (whether or not the benefit under the Retirement Plan commences at such time) and further reduced by (c) the annual benefit payable to Employee under any qualified defined benefit plan maintained by Rockville Bank/United Bancorp in the form of a single life annuity for the life of the Employee (whether or not the benefit payable under such plan is actually payable in such form) commencing at age 65 (whether or not the benefit under such plan commences at such time). If such benefit shall commence to be paid prior to the Employee’s attainment of age 62, such benefit shall be reduced by 4% for each complete year by which the date of benefit commencement precedes her attainment of age 62. Such benefit shall be paid in accordance with Section 2 below.

c.    For purposes of a. and b. above, “Average Earnings” shall have the meaning set forth in the Retirement Plan, except that in determining Average Earnings, Annual Earnings (as defined in the Retirement Plan) shall not be limited to the OBRA ‘93 annual compensation limit, the annual compensation limit imposed under the Economic Growth and Tax Relief Reconciliation Act of 2001 (“EGTRRA”), or any similar limit on annual compensation under Section 401(a)(17) of the Internal Revenue Code of 1986, as amended (the “Code”), imposed by any future legislation.

d.    Disability Benefit. If the Employee shall incur a separation from service due to a disability, the Employee shall be entitled to receive pursuant to this Agreement a benefit having a value equal to an annual benefit for her life calculated in the manner set forth in b. above; provided, however, that the reduction factor pursuant to b. above shall be 0.72 if the Employee’s benefit commencement date precedes age 62 by more than 7 complete years. The Employee will not be deemed to have terminated employment unless she has experienced a separation from service as defined in Section 409A of the Code. Such benefit shall be paid in accordance with Section 2 below. Notwithstanding the foregoing in this Section 1.d, “disability” shall be determined by the Compensation Committee, and the Employee will be considered to be disabled if the Employee is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment that can be expected to result in death or can be expected to last for a continuous period of not less than twelve months.

e.    Termination of Employment without Cause or due to Disability. If the Employee shall incur a separation from service by the Employer without Cause (as defined in the employment agreement between the Employee and the Employer) or due to Employee’s disability at any time before the attainment of age 62, (a) the Employee will be entitled to receive a benefit pursuant to this Agreement calculated in accordance with Section 1.b (and Section 1.d in the case of disability), but which benefit shall not be reduced regardless of the fact the Employee has not yet attained age 62 (i.e., there shall be no benefit reduction of 4% for each complete year by which the date the benefit commences precedes the attainment of age 62) and (b) in determining Average Earnings, Annual Earnings shall be determined consistent with the second paragraph of Section 1.c above.

f.    Absence of Other Benefits. No benefits shall be paid to the Employee pursuant to this Agreement other than as provided in a. through e. above.

2.    TERMS AND CONDITIONS OF BENEFIT. The annual lifetime benefit calculated in accordance with Section 1 hereof shall be paid in monthly installments on the first day of each month. Such installments paid pursuant to 1.a, 1.b or 1.d shall be calculated as if they were to commence to be paid on the first day of the first month following the Employee’s separation from service. However, if the Employee is a “specified employee” as that term is defined under Section 409A, at the time of separation from service, actual payment will commence on the first day of the seventh (7^th) month following the date of the Employee’s separation from service, and the first payment shall include all payments that would have been made had payments commenced on the first day of the month following the Employee’s separation from service, so that the first installment made pursuant to 1.a., 1.b. or 1.d, if the Employee is a specified employee, shall be equal to seven (7^th) such installments. If the Employee is not a “specified employee” at the time of separation from service, payment of monthly installments shall commence on the first day of the first month following the Employee’s separation from service.

3.    DEATH BENEFIT. If the Employee has attained age 55 while in service with the Employer and dies thereafter, while in the service of the Employer, and if the Employee’s spouse or other beneficiary is entitled to a death benefit under the Retirement Plan, said spouse or other beneficiary shall be entitled to receive a death benefit pursuant to this Plan. However, if the Employee is survived by her spouse, such spouse shall be deemed to be entitled to receive a spousal pre-retirement death benefit under the Retirement Plan even if a waiver of such spousal pre-retirement death benefit is in effect under such Plan. The amount of said death benefit shall be determined as if the Employee had been terminated without Cause on the day prior to her death (with benefits provided in accordance with Section 1.e above) with either a Joint and Survivor Annuity in effect, if her spouse survives her, or a five years certain and life annuity (as described in the Retirement Plan) in effect, if she has no spouse or her spouse does not survive her. However, rather than being paid in the form of a survivor annuity or in installments for the five-year period, payment of the present value of the death benefit shall be made in a lump sum on the first day of the first month following the Employee’s death. The actuarial assumptions to be utilized in computing the present value thereof shall be the interest rate and mortality assumptions then being utilized under the Retirement Plan in computing lump sum payments.

4.    LIMITATION OF BENEFIT. If the Employee’s employment shall be terminated for cause involving fraud, dishonesty, moral turpitude, gross misconduct, gross failure to perform

her duties, or disclosure of secret Or other confidential information of the Employer to any competitor or to any person not authorized to receive such information, neither the Employee, her spouse, her beneficiary nor her estate shall be entitled to receive any benefit under this Agreement.

5.    ABSENCE OF FUNDING. Benefits payable pursuant to this Agreement shall not be funded, and the Employer shall not be required to segregate or earmark any of its assets for the benefit of the Employee, her spouse, her beneficiary or her estate. Such benefits shall not be subject in any manner to anticipation, alienation, sale, transfer, assignment, pledge, encumbrance, attachment or garnishment by creditors of the Employee, her spouse, her beneficiary or her estate, and any attempt to anticipate, alienate, transfer, assign or attach these benefits shall be void. The Employee, her spouse, her beneficiary or her estate shall have only a contractual right against the Employer for the benefits hereunder and shall have the status of general unsecured creditors. Notwithstanding the foregoing, in order to pay benefits pursuant to this Agreement, the Employer may establish a grantor trust (hereinafter the “Trust”) within the meaning of Section 671 of the Internal Revenue Code of 1986, as amended. Some or all of the assets of the Trust may be dedicated to providing benefits to the Employee, her spouse, her beneficiary or her estate pursuant to this Agreement, but, nevertheless, all assets of the Trust shall at all times remain subject to the claims of the Employer’s general creditors in the event of the Employer’s bankruptcy or insolvency.

6.    MISCELLANEOUS.

a.    This Agreement may be amended at any time by mutual written agreement of the parties hereto, but no amendment shall operate to give the Employee, her spouse, her estate or any other beneficiary, either directly or indirectly, any interest whatsoever in any funds or assets of the Employer, except the right to receive the payments herein provided and the right to receive such payments from assets held in the Trust.

b.    This Agreement shall not supersede any other contract of employment, whether oral or in writing, between the Employer and the Employee, nor shall it affect or impair the rights and obligations of the Employer and the Employee, respectively, thereunder. Nothing contained herein shall impose any obligation on the Employer to continue the employment of the Employee.

c.    This Agreement shall be construed in all respects under the laws of the State of Connecticut.

d.    This Agreement has been prepared with reference to Section 409A of the Internal Revenue Code and should be interpreted and administered in a manner consistent with Section 409A.

e.    This Amendment and Restatement is effective as of November 15, 2017.