What Government Sampling Reveals About Tannins in Cumberland County Water
The Portland Water District-Greater (ME0091300) supplies water from surface sources to over 135,000 residents across Cumberland County including Cape Elizabeth, Falmouth, and Portland. According to EPA records, this public water system has no health-based violations on file, indicating compliance with federal safety standards.
Importantly, there is no federal monitoring data for tannins at this system or elsewhere in EPA datasets. Tannins are naturally occurring organic compounds usually present in surface waters due to decaying vegetation, potentially causing yellow or tea-colored water. The absence of tannin data means the public record neither confirms nor rules out its presence in your household water.
Interpreting Sampling Terms: 'Detected,' 'Median,' and 'Range' in Water Records
Government water data commonly reports detecting certain compounds and their concentration ranges. Detection means the compound was measured by laboratory instruments but does not imply a violation or unsafe level. Median values represent the middle value among multiple samples, while range shows minimum and maximum detected concentrations. Since tannins are not monitored here, these terms do not apply for tannins in this system's records.
Maintenance Rhythm of the Pentair Yellow, Tea-Colored Tannin Water Filter
For households experiencing tea-colored water or suspecting tannins, the Pentair Yellow, Tea-Colored Tannin Water Filter offers a direct treatment approach. This system ships ready to configure and uses filtration technology designed to reduce tannins that cause discoloration and staining. Routine upkeep involves replacing the filtration media at intervals based on water usage and water quality changes. This maintenance ensures consistent performance against tannin-related aesthetic concerns.
Adjusting Treatment for Large, Second, or Seasonal Homes
Larger households with higher water consumption may require more frequent media replacement in the Pentair tannin filter to maintain optimum performance. Second or seasonal homes, which may experience periods of stagnation or varying water quality, should monitor water clarity and color regularly. Adjusting maintenance schedules to the specific usage patterns and observed water changes helps sustain tannin control over time.
What a Certified Laboratory Test for Tannins Will Report and How to Read It
A certified laboratory test for tannins measures the concentration of tannin compounds in a water sample, typically reported in milligrams per liter (mg/L). The report indicates whether tannins are present and at what levels, providing a clear basis to decide on treatment needs. Since tannin presence varies widely and is not federally monitored, homeowners relying on private testing gain the most accurate understanding of their water's tannin status.
Sample Size and Its Impact on the Confidence in Tannin Data
In the absence of federal tannin data for this system, no sample size exists to estimate regional tannin trends. This underlines why individual testing is necessary to determine tannin conditions in your household water. Limited sample sizes in any testing reduce statistical confidence, so multiple tests over time may be advisable to understand fluctuations and baseline levels.
In summary, EPA water system records for Cumberland County do not monitor tannins, so their presence or concentration in your water remains unknown from public data alone. A certified laboratory test can provide precise tannin measurements specific to your home, and the Pentair Yellow, Tea-Colored Tannin Water Filter offers a documented solution ready to be configured for removing tannins causing discoloration and staining.
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 PORTLAND WATER DISTRICT-GREATER (ME0091300), surface water supply, serving 135068 people: 0 health-based violations of 6 total; lead 90th percentile 0.0019 mg/L
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