Even if water users understand the need for water conservation and know that they should be using more efficient technology inside, more water-conserving landscaping, and fewer, more efficient irrigation systems, the cost and/or the effort associated with obtaining replacements for their existing materials may be enough to prevent or delay them from doing so. To reduce the burden on the consumer, municipalities or water utilities can offer rebates, vouchers, or can provide the materials themselves. This reduces the customer’s investment by paying all or some of the costs o