Microplastics in Brown County Water: Understanding Green Bay's Surface Water Supply

The EPA's water system record for Green Bay Waterworks in Brown County, Wisconsin, reports no health-based violations in their public water supply, which serves over 107,000 residents using surface water. However, this record does not include testing for microplastics, since no federal monitoring data exists for microplastics in this system or elsewhere federally. This page addresses common questions about microplastics related to this system and provides guidance on evaluating treatment options.

What does the water system's testing reveal about microplastics?

The official EPA record for Green Bay Waterworks certifies that no health-based violations have been found for regulated contaminants. Importantly, this record does not measure microplastics content in the source or distribution water. Thus, it neither confirms nor rules out the presence of microplastics. The lack of data means decisions about microplastic filtration cannot rely on system-wide government measurements here.

How might seasonal or long-term changes affect microplastic levels in surface water?

Microplastics in surface water sources can vary with rainfall, runoff events, or nearby human activities, which influence particulate loads entering lakes and rivers. Since Green Bay’s supply derives from surface water, such dynamics could affect microplastic concentration over time. Without regular monitoring, these variations remain unknown but are typical in surface waters across the US.

Can we compare Green Bay’s water to other counties for microplastics concerns?

Because no EPA or federal datasets include microplastics testing for Green Bay or neighboring counties, direct comparison is not possible. Differences in source characteristics—Green Bay uses surface water—may suggest higher microplastic entrance potential compared to groundwater-fed systems, but this remains speculative without data. Thus, area comparisons should be made cautiously.

Which household water points are likely to show effects related to microplastics first?

Microplastics mostly manifest as microscopic particles suspended in water and do not typically cause visible symptoms. However, fixtures with fine filters or appliances that use water filtration might capture particles first, such as refrigerator water dispensers or dedicated faucet filters. Signs like unusual sediment or filter clogging might suggest particulate presence but are not definitive for microplastics.

How can homeowners systematically check for microplastics in their own water?

The initial step is collecting a water sample from the household tap and sending it to a certified laboratory specializing in microplastic analysis, because routine water tests do not include this contaminant. Starting with inexpensive checks for clarity and sediment can rule out gross particulate issues but will not detect microplastics. Laboratory testing is necessary for precise identification and quantification.

For households seeking effective microplastic reduction, the C-Series Microplastics Filter offers a filtration approach designed to address these fine particles. This system ships ready to configure with existing plumbing and filtration setups.

In summary, Green Bay’s water system record shows compliance with health standards but provides no data on microplastics. Understanding local source water and testing your home's water through certified labs are vital first steps. Considering a specialized filter like the C-Series Microplastics Filter can help households proactively manage microplastic concerns in their daily water use.

Where this information comes from

Source: EPA SDWIS public water system record. Sampled 2023-09-30. These figures describe the public water system's record, not the plumbing inside any individual building.

On record: EPA SDWIS record for GREEN BAY WATERWORKS (WI4050356), surface water supply, serving 107369 people: 0 health-based violations of 4 total; lead 90th percentile 0.0025 mg/L