sewer water bill

Why is Your Sewer Bill Higher Than Your Water Bill?

Published On: October 2, 2023By Tags: , ,

For many homeowners, receiving their monthly utility bills can be an eye-opener, especially when they notice a significant difference between their water and sewer charges. This common occurrence often leads to the question: “Why is my sewer bill higher than my water bill?” In this article, we will explore the key factors that contribute to this apparent imbalance and shed light on the complexities of water and sewer billing.

Metering Methods

One of the primary reasons for the difference in water and sewer bills lies in the methods used to meter each service. Typically, water consumption is measured using a water meter, which records the volume of water entering a property. This measurement forms the basis for calculating the water bill. However, sewer charges are often based on the assumption that all water used is returned to the municipal sewage system, even though a portion may be used for non-sewer related purposes such as irrigation or swimming pools. This discrepancy is known as “non-sewer water” and can significantly impact your sewer bill.

Treatment Costs

The process of treating wastewater before it is released back into the environment is a complex and resource-intensive operation. Wastewater treatment plants must remove pollutants, pathogens, and contaminants from the water, ensuring it meets strict environmental and health standards. These treatment facilities require significant investment in infrastructure, skilled personnel, and energy, which directly influences the cost of sewer services. In contrast, the treatment of water for consumption purposes is generally less resource-intensive.

Infrastructure Maintenance and Upkeep

Sewer systems are extensive networks of pipes, pumps, and treatment facilities that require regular maintenance and repairs to ensure they function efficiently. Aging infrastructure, combined with the challenges of managing underground systems, can lead to substantial costs for municipalities. These expenses are reflected in sewer bills to cover the ongoing maintenance and improvement of the sewer system.

Regulatory Compliance

Municipalities are subject to strict regulations governing the treatment and disposal of wastewater. Compliance with these regulations is essential to protect public health and the environment. Meeting these requirements demands investment in advanced technologies and adherence to rigorous testing and reporting standards. Consequently, the costs associated with regulatory compliance contribute to the higher sewer bills.

Capital Improvement Projects

Cities and municipalities periodically undertake capital improvement projects to upgrade or expand their sewer systems. These projects are necessary to accommodate population growth, address aging infrastructure, and meet evolving environmental standards. The expenses incurred for these projects are spread out over time and often reflected in the sewer charges levied on consumers.


While the higher sewer bill may initially seem perplexing, a deeper understanding of the factors at play reveals the intricacies of water and sewer billing. Metering methods, treatment costs, infrastructure maintenance, regulatory compliance, and capital improvement projects all contribute to the disparity between water and sewer charges. Recognizing these factors can help homeowners appreciate the complexities involved in providing reliable and environmentally responsible sewer services. Additionally, exploring ways to reduce water consumption, such as adopting water-saving technologies, can indirectly help mitigate sewer costs.


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