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CHAPTER: 34:04





1.        Short title

2.        Interpretation

3.        Importation and movement of aquatic weeds prohibited

4.        Minister may alter Schedule

5.        Offences

6.        Declaration of infested waters

7.        Regulations

8.        Protection from liability for acts done in good faith


                            Schedule - Aquatic Weeds


Act 46, 1971,
S.I. 91, 1986.
S.I. 56, 1987.

An Act to provide for the Control of Aquatic Weeds and matters incidental thereto.

[Date of Commencement: 31st December, 1971]


1.       Short title


            This Act may be cited as the Aquatic Weeds (Control) Act.


2.       Interpretation


            In this Act-

            "aquatic apparatus" means any article designed for use in, on, under or around surface waters, which comes into contact with water during use;

            "aquatic weed" means any aquatic weed specified in the Schedule, and includes any portion, fragment, trace or seed of any such weed;

            "boat" includes any vessel or craft designed, suitable or used for the purpose of floating in, on, or under surface waters;

            "infested waters" means waters declared under section 6 to be infested with aquatic weeds;

            "surface waters" means all water flowing over the surface of the ground or contained in or flowing from any river, spring, stream or watercourse or any lake, dam, pan, pond or swamp.


3.       Importation and movement of aquatic weeds prohibited


            No person shall import into Botswana, or move from any point or place within Botswana to another point or place within Botswana, any aquatic weed.


4.       Minister may alter Schedule


            The Minister may at any time add to or amend the Schedule by order published in the Gazette.


5.       Offences


            Any person who knowingly or recklessly contravenes any provision of section 3 shall be guilty of an offence and liable to a fine not exceeding P2000 or to imprisonment for a term not exceeding two years, or to both.


6.       Declaration of infested waters


            The Minister may by order published in the Gazette-

     (a)     declare surface waters within any area defined in such order to be infested with aquatic weeds;

     (b)     vary or cancel any such declaration.


7.       Regulations


            (1) The Minister may make regulations for the better enforcement of the prohibition contained in section 3 and with a view to promoting the eradication of aquatic weeds.

            (2) Without prejudice to the generality of subsection (1), such regulations may provide for any of the following matters-

     (a)     places only at which boats may be brought into Botswana or, on importation into Botswana, be unloaded from railway trucks, aircraft, or other conveyances;

     (b)     the compulsory inspection and treatment of boats for the purpose of killing, destroying, removing or rendering innocuous, aquatic weeds;

     (c)     requiring persons to move, remove and submit boats for inspection;

     (d)     the seizure, detention, inspection and treatment by specified officers of articles and things which may have collected or been exposed to aquatic weeds or infested waters;

     (e)     the registration of boats and the issue of registration certificates in respect thereof;

     (f)      the prohibition of the use or movement of boats except in areas specified in or endorsed upon registration certificates;

     (g)     requiring persons to obtain, and empowering specified officers to issue, movement certificates authorizing the movement of aquatic apparatus;

     (h)     the restriction of the movement of boats, by water or air or overland, by reference to routes, points of arrival or departure or modes of conveyance;

     (i)      requiring persons before placing boats, or causing or permitting boats to be placed, in any waters of Botswana to report to specified officers and obtain certificates of authorization;

     (j)      requiring persons before placing, or causing or permitting to be placed, articles or things of the description mentioned in paragraph (d) in any waters of Botswana to submit such articles or things for inspection or treatment by specified officers;

     (k)     the regulation, restriction or prohibition of all or any modes of use of, dealing with, or contact with, water within infested waters;

     (l)      the issue of certificates of inspection, treatment and authorization and the form thereof;

     (m)    requiring persons to produce for inspection by specified officers registration certificates, movement certificates, and certificates of inspection, treatment and authorization;

     (n)     prescribing fees or charges for any registration, inspection, treatment or certificate provided for in the regulations.

            (3) The application of any regulation made under this section may be limited to any place or area within Botswana.

            (4) The regulations may provide for the imposition of a fine not exceeding P1000 or to imprisonment for a term not exceeding 12 months for any contravention thereof, or to both.


8.       Protection from liability for acts done in good faith


            No action shall lie against the Government or any officer thereof or any person duly authorized by any such officer for any acts done in good faith under this Act, and no compensation shall be paid to any person for any act so done.




(Section 2)

Scientific (Botanical) Name

Common Name

Salvinia Molesta D. S. Mitchell

Kariba weed, Motshimbama

Eichhornia Crassipes (Mart.) Solms

Water hyacinth, nile Lily

Pistia stratiotes L.

Water lettuce, Nile cabbage

Azolla filiculoides Lam.

Water fern

Myriophyllum aquaticum (Vell.) Verdc.


Elodea canadensis Mich x.

Canadian waterweed

Hydrilla verticillata (L.F.) Royle

Water thyme

Egeria densa Planch

Dense waterweed