Wat. Code, § 37184

If all payments under this chapter are made as prescribed and if redemption of the property is made before the delinquency date of the last installment of current assessments in the second fiscal year succeeding the fiscal year when the first payment was made, the amount necessary to redeem the property is the balance of the redemption amount with interest on such balance three-fourths of 1 percent accruing on the first day of each month following the last preceding payment to the date of redemption. When redemption is made under this section, no credit shall be allowed for amounts previously paid or credited.