Changes

<div class="col-md-8">

<div class="col-md-8">

<h4>Filter</h4>

<h4>Filter</h4>

The water in the barrel will remain fresher for use if leave litter is excluded. Leaves can be filtered out by a screen on top of the cistern, or by using a device fitted into the downspout.

<p>The water in the barrel will remain fresher for use if leaf litter and other debris excluded. Screens can be installed on the eavestroughs, in the downspout, or at the top of the cistern. These types of screens  are not designed to capture small particles and chemical pollutants. However, this fine material is usually first to wash off surfaces at the start of the storm. A <em> first flush diverter </em> is a simple, automated, mechanical device which prevents this first 'dirtier' part of the stormwater from being stored. Screens, filters and diverters should be in easily accessible locations, so that they can be inspected and cleared of debris periodically. </p> 

<h4>Sizing Barrels</h4>

<h4>Sizing Barrels</h4>

Roof catchment area can be estimated using one of many online digital maps. e.g. Distance can be measured on Google maps by right clicking on the desired start point. <br>

Roof catchment area can be estimated using one of many online digital maps. e.g. Distance can be measured on Google maps by right clicking on the desired start point. <br>