The document discusses pollution of Lake Horowhenua in New Zealand. It lists 10 ways for individuals to reduce pollution, such as using native plants, properly disposing of waste, and being green when washing cars. It explains how pollution can disrupt aquatic life by causing harmful algal blooms from increased nutrients, and damage from urban and agricultural runoff. One suggestion to reduce pollution is to properly dispose of waste oil and other fluids and have recycling options available.

1. LAKE HOROWHENUA
ONE OF NEW ZEALANDS
MOST POORLY
MANAGED LAKES

2. 10 WAYS TO STOP
POLLUTION
• #1. HAVE FEWER HARD SURFACES OF CONCRETE AROUND YOUR
HOUSE
• #2. USE NATIVE PLANTS AND NATURAL FERTILIZERS
• #3.DON’T OVER WATER LAWNS AND GARDENS
• #4. RECYCLE AND DISPOSE OF ALL TRASH PROPERLY
• #5. CORRECTLY DISPOSE OF HAZARDOUS HOUSEHOLD PRODUCTS
• #6. USE NON-TOXIC HOUSEHOLD WHENEVER POSSIBLE
• #7. RECYCLE USED MOTOR OIL
• #8. BE GREEN WHEN WASHING YOUR CAR

3. HOW DOES POLLUTION AFFECT
LAKES????
• REGARDLESS OF THE SOURCE, POLLUTION
CAN DISRUPT AQUATIC LIFE IN MANY WAYS.
IT CAN ALSO REDUCE THE DIVERCITY OF
WILDLIFE. FERTILIZERS AND PESTICIDES
FROM AGRICULTURAL AND URBAN RUNOFFS
CAUSE SEWAGE SEEPAGE FROM THE
GROUNDWATER AND THEN IT ENTERS THE
LAKES AND CAUSE THE LEVELS OF NIRATES
AND PHOSPHATESTO GO UP RAPIDLY.
• THESE CAN LEAD TO HARMFUL ALGAL
GROWTH WHICH CAN BE VERY HARMFUL TO
BOTH AQUATIC LIFE AND HUMAN LIFE.
REMAINS WASHED AWAY FROM
CONSTRUCTION ACTIVITIES AND URBAN OR
AGRICULTURAL ACTIVITY ENTER THE
LAKES, REDUCING WATER CLARITY AND
WATER QUALITY , AND CAN BE LETHAL TO
AQUATIC ORGANISMS BY BECOMING

4. ONE OF THE THINGS YOU
COULD DO!
• Don’t pour waste oil into gutters or down storm drains,
and resist the temptation to dump wastes onto the
ground. A single quart of motor oil that seeps into the
groundwater can pollute 250,000 gallons of drinking
water. If you don’t have a place to recycle used motor oil
in your community, ask your local sanitation or public
works department to create one. Check Earth911.com
for local recycling options. When you buy motor oil, ask if
the store or service station has a program to buy back
waste oil and dispose of it properly. Keep up with car
maintenance to reduce leaking of oil, coolant, antifreeze
and other hazardous fluids.

5. Facts about water
• Water is made up of two elements, hydrogen and oxygen. Its
chemical formula is H2O.
• Water has three different states, liquid, solid and gas.
• Water covers around 70% of the Earth’s surface.
• Water from a sea or ocean is known as seawater. On average,
every kilogram (2.2lb) of seawater contains around 35 grams
(1.2 oz) of dissolved salt.
• The freezing point of water lowers as the amount of salt dissolved in
at increases. With average levels of salt, seawater freezes at -2 °C
(28.4 °F). R, it reaches 6650 kilometers in length (4132 miles).3w

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