News and Media Releases
Keep track of the rainfall across the year, all in one place, with this handy chart.
Charts are available for collection from our McLachlan Street office in Horsham.
If you are unable to make it into our office to collect a chart, please call our friendly team on 1300 659 961 and they will be able to assist.
If you'd like to print your own copy, you can download the chart here - Rainfall Chart 2025
Our Annual Report provides information about our operations as well as detailed financial information.
Donald’s Wastewater Treatment Plant (WWTP) is being upgraded to better service Donald’s growing industrial district, enhance water security and keep our open spaces green.
Work began earlier this year to modify the treatment lagoons and storages. Together with the construction of a new mechanical plant, these lagoons will provide additional wastewater treatment and storage capacity.
GWMWater’s 2024/2025 tariffs have been confirmed by the Essential Services Commission, with water bills increasing with only CPI in most cases.
Average household bills in GWMWater’s service area will rise by 3.6% or $12.50 a quarter.
GWMWater has awarded tenders to construct the pipeline and remaining facilities which will provide drinking water to the township of Kaniva.
The township of Ultima will now enjoy a fully treated drinking water supply straight from the tap.
Supplying the town with drinking water means residents will no longer need to rely on their rainwater tanks or packaged water for drinking and food preparation.
GWMWater is extending its sewerage network to service a new residential development area at Green Hill Lake, east of Ararat.
GWMWater have started planning to upgrade urban customers in Berriwillock and Culgoa to a drinking water supply.
The proposal to upgrade the Mallee towns to a drinking water supply is part of GWMWater’s latest pricing proposal to the Essential Services Commission, which was given a preliminary nod in March 2023.
Register your interest to provide feedback on updated Recreational Area (Water) Regulations.
If you use one of our below water storages for recreation, we would love to hear from you!
| Lake Bellfield | Lake Lonsdale | Taylors Lake | ||
| Lake Fyans | Moora Moora Reservoir | Lake Toolondo | ||
| Green Lake, Horsham | Rocklands Reservoir | Lake Wartook |
The updated Recreational Areas (Water) Regulations will replace the 
By-Law 106 - Recreational Areas in August 2023.
The updated regulations are needed so you can continue to use water storages that are formally determined as ‘Recreational Areas’ under the Water Act 1989.
The regulations will continue to ensure the safety of visitors and the protection of water quality, water corporation facilities, Aboriginal cultural heritage, and environmental values.
You can register your interest to:
• Be informed by email when the draft regulations are available
• Let us know if you would like to attend an information session
• Tell us what recreational activities you enjoy currently
• Tell us which recreational areas you are interested in
To learn more, visit the website at www.water.vic.gov.au/recreational -values/recreational-areas-regulations or email the recreation team at