Ash Dam, Settling Pond & Stormwater Management Solutions

Before wastewater or stormwater can be released into the environment, it must meet strict quality standards. There are clear signs that your site’s water may need treatment before discharge, especially in assets such as ash dams, sedimentation ponds, stormwater systems, and high-risk industrial or rural catchments. Some signs to look out for are:

1. Persistently Cloudy or Murky Water: Water stored in an ash dam, sedimentation pond, or settling pond that remains turbid even during dry weather indicates fine particles or contaminants that natural settling can’t remove. This is common after rainfall on coal-fired power station ash dam water and on construction or mining site ponds where fine solids remain suspended.
2. Visible Sediment or Erosion Around Outlets: Sediment deposits downstream of a pond or erosion near the outlet suggest the pond is not providing adequate stormwater sediment control, meaning solids are still being washed out during rainfall. Often seen in construction, mining and mineral processing activities, where disturbed ground increases sediment load.
3. Oil Sheen or Discolouration in Runoff: Industrial sites such as chemical processing can generate stormwater contaminated by hydrocarbons and trace metals. Food and beverage production sites can show stormwater contaminated by oils, grease, and detergents. Any sheen, unusual colour, or strong odour in your stormwater is a sign you may need additional industrial stormwater management before release.
4. High-Risk Runoff from Agricultural or Rural Areas: Rural stormwater management is often necessary when runoff carries manure, fertiliser, or eroded soil into dams or creeks. Turbid or nutrient-rich water is a sign that the system requires treatment to prevent downstream impacts.
5. Ponds Approaching Capacity: Storm events or seasonal rainfall can quickly fill ash dams, sedimentation ponds, and stormwater basins. When capacity becomes limited, water often needs treatment to be safely released or reused. This sign is a frequent pressure point for mining, construction, and large industrial sites during wet season conditions.

Odours or Signs of Stagnation: Strong or septic smells around ponds or stored wastewater indicate low oxygen levels and possible contamination, making treatment necessary before environmental discharge.

At Water Treatment Services, we transform contaminated or unstable water into clean, compliant water ready for environmental release. Our approach combines engineering expertise, reliable chemistry and long-term support to help sites meet Australian water quality standards across ash dams, sedimentation ponds, stormwater basins and process water systems. Our tailored environmental release solutions include:

• Coagulation and flocculation to remove fine solids and turbidity from stormwater held in sedimentation or settling ponds.
• pH Correction and metal precipitation that adjusts water chemistry for safe discharge and meets compliance limits for industrial and rural sites.
• Hydrocarbon and FOG treatment designed to target oil sheen and organic contamination common in industrial stormwater management.
• Stormwater sediment control programs that improve sediment capture in basins and support sustainable stormwater management outcomes.
• Stormwater modelling support to help predict pond performance and plan treatment volumes during storm events.
• Disinfection and polishing treatments which ensure water leaving the site is safe, clean and suitable for environmental release or reuse.
• Ongoing monitoring and compliance support such asregular sampling, analysis and optimisation to maintain consistent discharge quality.

With over 30 years of experience delivering stormwater management and environmental water treatment across Australia, our team aims to provide reliable, practical and fully customised solutions. We meticulously work with you to help reduce maintenance costs, optimise chemical spend, conserve energy, stay compliant and mitigate risk.