Table of Contents
What is Phosphorus?
Phosphorus is a natural element which may be found in natural water bodies. It’s a crucial nutrient for aquatic life, playing a big role in photosynthesis and DNA formation. Total phosphorus (TP) measures all the types of phosphorus in water, including dissolved and solid forms. This includes orthophosphates (inorganic), polyphosphates, and organic phosphates.
Phosphorus can enter water from natural sources like soil and rocks, but human activities also release it into the environment. These activities include farming, wastewater treatment, fertilisers, and cleaning products. While phosphorus is essential for life, too much in water can cause serious problems.
5 Effects of Increased Total Phosphorous in Water
The good ecological status threshold for phosphorus in Ireland is 0.035 mg/L. According to the EPA’s latest report, phosphorus levels exceed this limit in 9% of groundwaters and over 20% of rivers. Such high levels of phosphorus can cause:
(1) Eutrophication: Extra phosphorus causes algae and aquatic plants to grow too much. This blocks sunlight from reaching plants and animals below the surface, disrupting the ecosystem and sometimes killing aquatic life.
(2) Oxygen Depletion: When algae blooms die and decompose, the process uses up oxygen in the water. Low oxygen levels can harm or kill fish and other animals that need oxygen to survive.
(3) Habitat Destruction: Dense algae mats block sunlight from underwater plants, which are important habitats for fish, insects, and other species. Without these plants, many aquatic animals lose their homes.
(4) Poor Water Quality: Excess phosphorus makes water murky and green. This reduces water clarity and can make rivers and lakes look and smell unpleasant.
(5) Health Risks: Algae blooms caused by too much phosphorus can release toxins. These toxins can harm humans and animals that drink or swim in the water.
Algal bloom covering a lake
How Can We Prevent These Problems?
Reducing total phosphorus in water takes a combination of good practices, including:
Agricultural Runoff Control: Farmers can reduce phosphorus runoff by using less fertiliser, planting cover crops, and creating buffer zones near waterways.
Managing Septic Systems: Properly maintained septic systems help prevent leaks that could release phosphorus into groundwater.
Urban Measures: Cities can regulate industrial discharge and encourage residents to limit fertiliser use on lawns.
Wastewater Testing: Even small increases in total phosphorous levels can negatively affect the water quality and ecosystem. Therefore, it is crucial to monitor and control phosphorus in wastewater streams.
EU Regulations & The Total Phosphorous Test
The EU’s Urban Wastewater Treatment Directive 91/271 aims to protect human health and the environment from the effects of untreated urban wastewater. The directive was revised in 2022 to improve the regulations further and highlight the importance of testing water for total phosphorus.
The Water Framework Directive 2000/60 protects and improves the quality of both surface and groundwater. This is achieved by continuous monitoring and follow-up action to prevent excess nutrients (mainly nitrogen and phosphorus) from entering water. The accurate measure of phosphorus is vital to control water pollution.
The total phosphorus test measures all forms of phosphorus in a sample, including orthophosphate, condensed phosphate, and organic phosphate. An automated TP analyser is an instrument used to measure total phosphorus levels. It offers a rapid and accurate method for determining phosphorus concentrations. Testing is performed daily, weekly, or monthly, depending on the facility and the regulations.
How Can Southern Scientific Help?
Southern Scientific Services has over 30 years of experience helping communities manage wastewater. We provide accurate testing services to meet EPA guidelines and help water treatment plants find cost-effective solutions. Whether you need regular testing or help creating a phosphorus removal plan, we’re here to support you.
Don’t let phosphorus harm your water. Together, we can protect our water for future generations.
