Pentek Yellow, Tea-Colored Tannin Water Filter

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Overview of Brockton's Water Supply and Tannin Concerns

The Brockton Water Department delivers surface water to about 105,788 residents through over 24,000 connections. This surface water source means the water originally comes from rivers, reservoirs, or lakes rather than underground wells. Surface water can carry natural organic substances like tannins, which are plant-based compounds that may color the water a tea-like hue. Tannins do not have federal monitoring data available for this public water system, meaning their presence or concentration in Brockton's treated water is not documented by government testing.

Water Appearance After Using the Pentek Yellow Tea-Colored Tannin Water Filter

The Pentek Yellow system is designed to address water discoloration commonly associated with tannins. When configured on a household water line, it reduces tea-colored staining and can improve water clarity at taps. This filtration technology targets the aesthetic aspect of water quality by removing or reducing tannins and similar organic compounds that cause color but do not pose documented health risks. Homeowners using this filter typically notice clearer water without the brownish tint often linked to natural organic matter.

What Government Measurements Show and What They Do Not

The Brockton Water Department's public system record notes five health-based EPA violations unrelated to tannins. It also reports a lead 90th percentile level from distribution system sampling, which is a plumbing-related metric, not a direct source-water tannin measure. There are no EPA or federal monitoring data for tannins in this municipal system, so no concentration levels exist in public records. This means no official data indicate the presence, absence, or safety status of tannins in Brockton's treated water. A tea-colored tint might be an aesthetic matter rather than a regulatory exceedance or safety concern.

Differences Between Public Water System Records and Private Well Testing

Public water systems like Brockton's undergo regular federally-required testing for a range of chemical and microbial contaminants. However, tannins are not included in this mandatory testing panel. Private wells are not part of these federal monitoring programs and require separate testing tailored to local conditions and homeowner concerns. If a household is on a private well or wants to confirm tannin levels in their tap water beyond municipal data, specific water testing labs can analyze tannins directly. Public records provide general context but cannot substitute for individual water tests.

Understanding Sampling Terms: "Detected," "Median," and "Range" in Water Records

In government water testing reports, terms like "detected" indicate a substance was measured by instruments, not that it is unsafe or in violation of any limit. "Median" values represent the middle concentration among samples, showing typical levels. "Range" describes the lowest and highest measured concentrations. For Brockton's water system, no tannin testing means these terms do not apply for tannins. For other contaminants, these terms help interpret variability and typical levels but must be understood in context without assuming any detection implies a problem.

The Role of Plumbing Material and Age on Water Color

Water appearance can be influenced by household plumbing components. Older pipes or those made from certain materials may interact with water chemistry and affect coloration independently from source water tannins. Staining or discoloration in taps may sometimes stem from internal plumbing rather than the public water supply. Considering plumbing condition is important if tea-colored water is observed, alongside evaluating tannin-related causes.

What Residents Should Not Conclude From Area Water Data

Residents of Brockton should not assume tannins are definitely present or absent in their tap water based solely on public system records, since tannins are not tested by the federal monitoring programs for this system. A tea-like tint might arise from natural organics, plumbing factors, or other causes unrelated to any health or safety issue documented in municipal data. Confirming tannin levels requires specific water testing at the household level. Using a Pentek Yellow Tea-Colored Tannin Water Filter directly addresses water color issues linked to tannins but is not a substitute for testing or assessment tailored to your home’s water quality.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2023-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA SDWIS record for BROCKTON WATER DEPARTMENT (MA4044000), surface water supply, serving 105788 people: 5 health-based violations of 7 total; lead 90th percentile 0.004 mg/L