This week, your key decision is selecting the right equipment class to manage perchlorate based on regional water data, not just assumptions about local well water.
How should I compare Portage’s perchlorate data with nearby Kalamazoo County areas without overreading it?
The Portage public water system serves roughly 46,292 people with groundwater sources. EPA data for Portage from 2003 shows no perchlorate detected above the 4.0 µg/L reporting level in 26 samples. Nearby Kalamazoo County systems may have different records, but it's important to avoid assuming your home's water matches aggregate area data. The EPA dataset is for the public system as a whole, not individual homes or wells.
What does seasonal or multi-year variation look like in Portage’s perchlorate record?
The monitoring was conducted over six months in early 2003, a snapshot rather than a continuous trend. No perchlorate was detected during this period, but changes can occur with water table shifts or new sources. No subsequent data is included here, so long-term variation remains unrecorded for this system.
What does the measured range say about federal standards, and what does it not say about safety or violations?
The EPA does not have a federal maximum contaminant level (MCL) for perchlorate; thus, no detected level here implies neither a violation nor a health-based limit breach. Absence of detection in these samples only means perchlorate was below the reporting threshold used in this monitoring round. It does not guarantee zero perchlorate in your home's supply, and it does not indicate health risk or safety levels.
What do the terms 'detected,' 'median,' and 'range' mean in this sampling record?
In Portage’s sampling, "detected" means perchlorate was measured above the smallest concentration the test can reliably report—here, none above 4.0 µg/L were found. "Median" and "range" describe the middle value and spread of measurements across samples. Since there were zero detections, median and range are not applicable for perchlorate in this record.
How many samples and water sources back these figures, and what does a small sample size imply?
The 26 samples represent routine monitoring within Portage’s public system, which draws from groundwater wells. While this provides a regional snapshot, 26 samples over months is relatively limited for fully understanding all seasonal or local variations. Individual well water quality can differ significantly, so direct testing of your household water is necessary to confirm your specific perchlorate level.
What factors change the treatment approach for a large household, second home, or seasonal property?
Household size and water demand affect how much treatment capacity you need. Larger or multiple residences, especially those used seasonally, may require equipment scaled for variable usage. The choice between different equipment classes should consider flow rates, capacity, and maintenance suited to your actual water use patterns, not just perchlorate concentrations in regional data.
To resolve uncertainty, order a perchlorate test for your specific water supply. A test result below the detection limit aligns with the regional data and suggests standard treatment might suffice. If perchlorate is present above your comfort level, the Pentair Perchlorate Filter ships ready to configure and provides a proven solution tailored for residential perchlorate removal.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2003-07-29. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR1 monitoring (2001-2005) for PORTAGE (MI0005520), MI: 26 results across 1 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level