Portage, MI City Water
What's in Your Portage Tap Water?
Portage runs its own water system, drawing from 19 wells inside the city and treating the water to meet every federal and state standard. The city operates its own arsenic removal plant, and its service line inventory turned up no lead pipes at all. It doesn't soften the water. Here's what's in Portage's water, and what you can do about it.
The quick facts
Portage Water at a Glance
The source
Where Portage's Water Comes From
Portage pumps groundwater from 19 wells scattered across the city, drawing on the Kalamazoo-Portage and Schoolcraft aquifers. The city is fully independent: it does not buy water from Kalamazoo or anyone else, and it treats everything it delivers at its own facilities.
Treatment covers chlorine for disinfection, fluoride for dental health, and phosphate for corrosion control and to hold iron in solution. The Garden Lane facility removes arsenic from the groundwater before it goes out to the system, which is a meaningful step and not one every Michigan city has to take.
The state's source water assessment rated the susceptibility of Portage's well sites as high, which is why the city maintains a wellhead protection program. Portage reports no contaminant level violations in 2025, and says the water is tested daily. Treatment doesn't include softening, so your water reaches the house as hard as it was in the aquifer.
From aquifer to tap
- 19 city wellsGroundwater from the Kalamazoo-Portage & Schoolcraft aquifers.
- Garden Lane facilityArsenic removal, plus chlorine, fluoride & phosphate.
- Across the cityChlorine keeps it safe out to about 46,000 people.
- Your Portage homeArrives very hard, and unsoftened, straight from the aquifer.

Water Hardness
Is Portage's Water Hard?
Yes. Groundwater across Kalamazoo County carries a heavy mineral load, and Portage's is no exception.
The city doesn't publish a hardness figure in its annual water quality report, which is common for Michigan utilities since the state doesn't ask for one. Regional groundwater estimates for the county put it somewhere from the mid teens into the low 20s grains per gallon, well into the "very hard" range, but none of those is a measurement of Portage's finished water. Neighboring Kalamazoo, drawing from similar ground, has been described by its own staff as averaging around 20 grains.
What is certain is that Portage doesn't soften. That mineral load is what leaves spots on your glasses, scale on your faucets and showerheads, and a film that keeps soap from lathering. Over time it dries out skin and hair and wears on water heaters and appliances. Since no published number exists for Portage, a free water test at your address is the only way to find out what you're working with.
See Portage Water SoftenersBeyond hardness
What Else Is in Portage's Water?
Portage reports that its water meets or exceeds all federal and state quality standards, with no contaminant level violations in 2025. A few things are still worth understanding:
Arsenic
Portage is one of the Michigan cities that has to treat for it. The Garden Lane facility removes arsenic before the water enters the distribution system, and 2025 results came in at 3 parts per billion against a limit of 10. That's compliant, and it is also the reason the treatment plant exists.
Reverse osmosis reduces arsenic further at the tap if you want another layer.Iron and manganese
The city adds phosphate to keep iron dissolved rather than staining fixtures, which tells you there's enough in the raw groundwater to need it. Portage doesn't publish iron or manganese levels.
A whole-home filter handles staining and metallic taste where the water enters your house.Sodium
Portage measured between 11 and 75 parts per million in 2025. There's no federal limit, but the EPA advises 20 ppm for people on sodium-restricted diets, so the high end matters if your doctor has you watching it.
Reverse osmosis reduces sodium at the drinking tap.Chlorine and disinfection byproducts
Chlorine keeps water safe as it travels through the pipes, but it affects taste and smell, and it forms trace byproducts. Total trihalomethanes measured 42 parts per billion in 2025 against a limit of 80.
A carbon or reverse osmosis filter reduces both at your tap.PFAS
Michigan adopted some of the strictest PFAS limits in the country in 2020. Portage's 2025 testing found PFBS at 7.7 parts per trillion against a limit of 420 and PFHxS at 5.0 against a limit of 51, with the other five regulated compounds non-detect. The city has a separate PFAS investigation underway at its former landfill and firefighter training site, and testing of the municipal supply has not exceeded health advisory levels.
If you want added assurance, we offer a third-party PFAS test and treatment rated to reduce PFAS.Lead from home plumbing
Good news here: Portage inventoried all 15,000 service lines in its system and found no lead ones. Older homes can still pick up trace lead from interior pipes and fixtures, and the city's 2023 testing put the 90th percentile at 2 parts per billion.
A reverse osmosis system at the kitchen sink covers that at the point you drink from.Solutions for Portage homes
How to Get Better Water in Your Portage Home
Based on what's in Portage's water, these are the systems that help most. Not sure which you need? That's what the free water test is for.
Water Softeners
For the heavy mineral load in Portage's groundwater: fewer spots, less scale, softer skin, and longer-lasting appliances.
Explore Portage Water Softeners →Reverse Osmosis Drinking Water
For better-tasting water at the tap, with reduced chlorine taste, disinfection byproducts, arsenic, sodium, lead, and PFAS.
Explore Drinking Water Systems →Iron & Whole-Home Filters
For orange staining, metallic taste, or rotten-egg odor, whether you're on city water or a private well around Portage.
Explore Iron & Whole-Home Filters →Bottled & Bottleless Water
For easy, clean water at home or the office without hauling jugs from the store.
Explore Portage Bottled Water Delivery →Service & Repair
Already have equipment? We keep softeners, filters, and RO systems running on most makes and models.
Explore Service & Repair →How to Get Cleaner Water in Portage
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Why Portage trusts us
Why Portage Trusts Gordon Water
- Serving West Michigan for more than 50 years
- A Portage office on East Centre Avenue, staffed by people who live here
- Second-generation, family-owned, and locally rooted since 1973, not a franchise
- WQA-certified Water Specialists who recommend based on science and ethics, not pressure
- Free on-site water testing before any recommendation
- Largest selection of water treatment equipment in West Michigan, including the non-electric Kinetico system
- Highest-rated water treatment company in West Michigan (read our reviews)
Questions
Frequently Asked Questions
Do I need a water treatment system if I'm on Portage city water?
Is Portage tap water safe to drink?
How hard is Portage water?
Does Portage water have arsenic?
Does Portage water have PFAS?
How much does a water treatment system cost?
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