def calc_water(scenario, years, days_in_year):
    """Calculate Water costs Function

    Args:
       scenario (object): The farm scenario
       years (int): The no. of years the simulation will analyse
       days_in_year (float): The number of days in a year

    Returns:
        cogs_water (list): Cost of Goods Sold expenditure on Water as a time series for each year
        water_consumption (list): The amount of water consumed each year
    """
    water_consumption = [0]

    for y in range(years+1):
        if y == 1:
            water_consumption.append(scenario.system_quantity * 0.95 * days_in_year + (1900*12))
        elif y > 1:
            water_consumption.append((scenario.system_quantity * 0.95 * days_in_year + (1900*12)) * scenario.growing_area_mulitplier)

    cogs_water = [i * scenario.water_price for i in water_consumption]

    return cogs_water, water_consumption