Pentair Yellow, Tea-Colored Tannin Water Filter

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Sample Size and Source Behind Available Water Data

The public water system record for Norman Utilities Authority in Cleveland County, OK, is based on extensive sampling from a surface water source serving over 104,000 people across more than 42,000 connections. However, no data from these samples measures tannins specifically. Understanding tannins requires separate, targeted testing because the existing system data focuses on other regulated contaminants and overall water quality parameters.

How Public System Records Differ from Private Well Testing

Public water system records reflect average conditions and compliance at the treatment plant and distribution system level, not at individual homes. Private well owners must test their own water to identify tannins because local variation can occur. While public surface water sources can be prone to tannins presence due to natural organic materials, the system’s records do not provide direct information on tannins concentration or effects in household taps.

Consequences of Leaving Tannins Untreated Over Time

When tannins occur in household water and are not addressed, the water may develop a persistent tea or yellow-brown tint. This can cause staining on plumbing fixtures, laundry, and dishware. While tannins typically do not pose a health risk, their presence can reduce water clarity and affect aesthetics, potentially leading to unpleasant taste and visual concerns over time.

Why Aesthetic Secondary Standards Differ from Health-Based Limits for Tannins

Tannins are measured under aesthetic secondary water quality parameters, which focus on taste, odor, and appearance rather than health risk. These secondary standards exist because tannins affect the visual appeal and usability of water but are not considered a health hazard by EPA. Thus, tannins detected or exceeding aesthetic thresholds do not indicate unsafe water but rather highlight a quality issue that some households may want to correct.

Changes at the Tap After Using the Documented Technology

The Pentair Yellow, Tea-Colored Tannin Water Filter ships ready to configure and targets tannin removal effectively. Once in place at the point of use, the filter reduces the water’s tea-colored tint and helps prevent staining, improving water clarity and taste. These outcomes improve daily use experience without altering health-based water attributes, making treated water more visually appealing and practical for household needs.

Symptoms and Conditions Related to Tannins in the Home

• Common symptoms: tea-colored or yellow-brown water; staining on sinks, tubs, or laundry; mild discoloration of water in glassware.
• Symptoms not caused by tannins: unpleasant odors; cloudy or milky water; metallic taste; sudden changes in water pressure.

Identifying tannins must include observing color and testing for natural organics; other symptoms usually suggest different water quality issues.

What Not to Conclude from Cleveland County Water Data

Because no tannin measurements exist in the public records, residents should not assume their water contains, or does not contain, tannins based on these data alone. Also, the presence of tannins is an aesthetic concern rather than a health violation. To determine if tannins affect your household water, you should conduct specific testing at your tap. The Pentair Yellow, Tea-Colored Tannin Water Filter is designed to address tannin-related discoloration and staining when confirmed present.

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 NORMAN UTILITIES AUTHORITY (OK1020801), surface water supply, serving 104868 people: 2 health-based violations of 9 total; lead 90th percentile 0.00055 mg/L