Hammond, Lake County’s water is supplied to more than 78,000 people through a public surface water system managed by Hammond Water Works Department. This system undergoes various treatment processes before the water reaches your tap. While the public water supply is regularly monitored and treated to meet regulatory standards, chlorine remains a common additive used to maintain water quality throughout the distribution network.
The Role of Plumbing Material and Age, Separate from the Source Water
Chlorine levels measured in water samples can be influenced not only by the water system’s treatment but also by the materials and conditions within household plumbing. Older pipes or certain metals may interact with chlorine differently, sometimes causing changes in taste or smell that are not directly related to the source water quality. Therefore, your experience of chlorine’s presence can vary within the same neighborhood depending on your home’s internal plumbing system.
How Public-System Records Differ from Private-Well Testing in What They Establish
The available government sampling records for Hammond’s water system represent aggregated results from the overall public supply, not the specific water coming from a single household tap. These records show the water quality parameters as treated and distributed by the system but do not directly reflect conditions inside private wells or individual home plumbing. To accurately determine the chlorine concentration in your own water, a qualified third-party test of your tap water would be needed.
What Questions a Commercial or Industrial Operator Adds That a Household Does Not
Commercial and industrial users often require water treatment considerations tailored to higher volumes and specific process needs. They may need to address chlorine in the context of manufacturing, equipment sensitivity, or regulatory compliance at a scale beyond typical household use. For residential users, the primary focus is usually on taste, smell, and minimizing unwanted residual chlorine effects in daily consumption and bathing.
What Distinguishes This Problem from the Two Problems Most Often Confused with It
People sometimes confuse chlorine issues with bacteria contamination or mineral hardness. Unlike microbiological contamination, the presence of chlorine in Hammond’s treated water is intentional and regulated to maintain water safety. Chlorine also differs from water hardness problems such as calcium and magnesium, which cause scale buildup rather than affecting taste or smell. Understanding chlorine’s unique role as a disinfectant helps in selecting appropriate water treatment solutions.
What 'Detected', 'Median' and 'Range' Mean in the Sampling Record on This Page
The Hammond Water Works Department’s records show chlorine as present within the treated surface water. The terminology “detected” means chlorine was measured during sampling, but this does not imply a legal or health violation. The record includes a variety of process codes indicating treatment steps in place but does not specify chlorine concentration values applicable to all tap water. Terms like median and range describe statistical distribution of chlorine levels over time and locations, reflecting typical fluctuations in the system rather than an individual point measurement.
In consideration of these factors, households in Hammond facing chlorine taste or odor concerns may evaluate options such as the C-Series Chlorine Taste & Smell Filter. This system ships ready to configure and uses technology designed to reduce chlorine effects on the water you use daily, improving taste and smell without altering the treated water’s foundational safety.
Remember, the quality information presented here specifically pertains to Hammond’s public surface water system and is publicly documented by the EPA. For more detailed and current information, consulting the official EPA public water system records is recommended.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2025-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for HAMMOND WATER WORKS DEPARTMENT (IN5245020), surface water supply, serving 78384 people: 1 health-based violations of 9 total; lead 90th percentile 0.003 mg/L