CoreXchange filtration media 43 million Americans rely on private wells Independent testing contaminant reduction NSF/ANSI 42 + NSF 372 material safety Test yearly coliform + nitrate at minimum Drought effect less water, more concentration Published testing documentation CoreXchange filtration media 43 million Americans rely on private wells Independent testing contaminant reduction NSF/ANSI 42 + NSF 372 material safety Test yearly coliform + nitrate at minimum Drought effect less water, more concentration Published testing documentation

Pure XP Pitcher Add to Cart

Well water in a drought

Less water in the well. More reason to test.

Dry months lower groundwater, and the water that is left can carry more of what you do not want. A private well is yours to monitor: here is what to test after a drought, and the honest role a carbon filter plays once the results are in.

15% of the US relies on a private well for drinking water (USGS)

NSF Certified NSF/ANSI 42 + NSF 372 material safety callouts

Made in the USA Pure XP + Nano XP filters are made in the USA

Buy Pure XP Pitcher Buy Smart Shield Max

NSF/ANSI 42 + NSF 372 Test first, filter second Made in the USA filter media

The quick picture

Drought does not just lower your well. It can change what is in the water that is left.

The short version: dry months pull the water table down, less water can mean higher concentrations of what is already down there, and the only way to know is a real test. The filter decision comes after. (On city water? We covered what drought does to municipal tap water too.)

NO3 As

Water drops dry months pull the table down

Concentration less water to dilute what is there

Test, then treat match any fix to a lab result

Private wells are on you, not the EPA.

The Safe Drinking Water Act covers public systems. More than 43 million Americans drink from a private well, and testing and treatment are the owner's job (USGS).

Drought can raise the arsenic odds.

A USGS and CDC national study estimated that the population drinking well water with elevated arsenic could rise from about 2.7 million to 4.1 million people during drought.

The first big rain is not an all-clear.

Recovery rain washes sediment and surface pollutants toward drinking water sources and can stir up wells. Experts in North Carolina's 2026 drought urged owners to test after conditions change, not just during (WRAL).

Why NSF 42/372 belongs on this page

Whatever you add after a well test should not add a new worry of its own.

That is why we lean hard on certifications for the Pure XP and Nano XP material safety. Whatever your lab report says, the fix you add should be safe to touch your water every day, and contaminant claims deserve published test data, not adjectives.

Epic water filter materials and certification visual

NSF 42 Pure XP + Nano XP material safety Certification focus for materials in contact with your water.

NSF 372 Pure XP + Nano XP lead-free material compliance Lead-content standard for wetted materials in drinking water products.

1x per year: minimum well test, coliform + nitrate EPA guidance for private well owners; sooner after any change.

7-10 days chlorine can linger after well shocking University extension guidance; carbon clears the leftover taste.

The simple checklist

Three moves for well owners after a dry summer.

Watch the symptoms

Falling pressure or sputtering taps can mean the water level is dropping.
New color, odor, or taste is a test-now signal, not a wait-and-see one.
Shallow and older dug wells are usually the first to struggle (USGS).

Test the right way

Many local health departments offer free or low-cost tests for the basics.
Use a state-certified lab for nitrate, arsenic, metals, and PFAS.
Skip home strip kits: ppb-level questions need lab equipment.

Treat to the result

Match any treatment to the lab report, not to marketing.
Carbon covers taste and chemical polish; boiling is not a fix and can concentrate nitrate.
Nitrate or arsenic call for dedicated systems, not a pitcher.

Inside the filter

What a carbon block honestly does for a tested well, and where it stops.

CoreXchange is designed to do more than one job. For a tested well, the story is adsorption: activated carbon holds onto chlorine taste, many VOCs, and trace organics as water passes through. North Carolina utilities leaned on the same tool this drought, adding activated carbon as PFAS and musty taste rose in shrinking reservoirs.

Chlorine taste and odor The NSF 42 certified job, including leftover taste after well shocking.

Broad contaminant focus Pure XP also targets PFAS, lead, VOCs, and chlorine taste/odor.

Not a disinfectant Carbon is not designed to remove bacteria or viruses; that is a lab and treatment job.

Tap water in

Layer 1: Nano fiber media

Layer 2: Carbon fiber block core

Filtered water out

A look inside

Wells are complicated. Your glass should not be.

Test Fix the source Filter the tap Replace cartridge on schedule Retest every year

Choose your setup

The same Epic products, tuned to a well owner decision.

Use the direct buttons below to add the exact product to cart.

Best all-around

Pure XP Pitcher

Everyday pitcher for chlorine taste and chemical polish on a tested well.

NSF/ANSI 42 material safety callout
Reduces over 99.9% of microplastics
100-gallon filter capacity

Buy Pure XP Pitcher

Best for families

Pure XP Dispenser

More ready-to-pour filtered water for households that refill often.

Pure XP reduces over 99.9% of microplastics
Great for fridge or counter routines
Direct add-to-cart checkout behavior

Buy Dispenser

Microplastics focus

Nano XP Pitcher

For microplastics and microbiological concerns while maintaining fluoride.

NSF/ANSI 42 material safety callout
Reduces over 99.9% of microplastics
Maintains fluoride

Buy Nano XP

Best under sink

Smart Shield Max

Tap-first filtration for kitchens where you want the counter clear.

CoreXchange double-layer media
Up to 750 gallons per filter
Under-sink convenience

Buy Smart Shield Max

Fast decision guide

Pick by your lab report, not by overthinking.

Drought is a groundwater problem. The product decision is a daily-use problem that starts with a test.

Pure XP

Choose this for broad everyday contaminant coverage. Great first move on a tested well.

Nano XP

Choose this for microplastics plus microbiological concerns. Good when fluoride retention is part of the decision.

Dispenser

Choose this when everyone in the house keeps refilling. Same simple behavior, more ready water.

Max

Choose this when you want filtration at the sink. Best for a cleaner counter and tap-first flow.

Need Pure XP Nano XP Max

Everyday polish Strong Strong Strong

No install Yes Yes No

NSF certifications 42/372 42/372 N/A

Quick answers

Well water FAQ, minus the wall of text.

Can a water filter fix a well that is running dry?

No. A filter treats water quality, not water quantity. If pressure is falling or taps sputter, talk to a licensed well contractor about the well itself, and test the water once things stabilize.

What should I test my well for after a drought?

Start with total coliform bacteria and nitrate at least once a year, per EPA guidance for well owners. If your water changed during the dry months, or you have never done a full panel, add arsenic, metals, and PFAS through a state-certified lab. Many local health departments offer free or low-cost basic tests.

Does a carbon filter remove nitrate or arsenic?

Standard carbon block filters, including ours, are not designed to remove nitrate and are not a reliable arsenic treatment. Those two need dedicated systems matched to a lab result. We would rather say that plainly than sell you the wrong tool.

Why does my well water taste like chlorine after service work?

Wells are commonly shock chlorinated after repairs or suspected contamination, and university extension guidance notes the chlorine can linger for 7 to 10 days. Once the system is flushed, a carbon block filter like Pure XP is NSF certified to Standard 42 for chlorine taste and odor, which is exactly that leftover taste problem.

Is my well covered by EPA drinking water rules?

No. The Safe Drinking Water Act applies to public water systems. Private wells are the owner's responsibility, which is why yearly testing matters more on a well than it does on city water.

Why do NSF/ANSI 42 and NSF 372 matter?

Your water is in constant contact with the filter housing and components. NSF/ANSI 42 helps verify material safety and filter performance, while NSF 372 verifies lead-free compliance for materials that come into contact with your drinking water.

Can I see the test results?

Yes. We publish our performance data and testing information so you can see exactly what each filter is designed to reduce before you buy.

Ready to make it simple?

Test the well. Filter the glass.

Pure XP for everyday taste and chemical polish on a tested well. Smart Shield Max for tap-first filtration at the sink. Dispenser for more household capacity.

Buy Pure XP Pitcher Buy Smart Shield Max Buy Dispenser

Private well statistics are summarized from USGS domestic well resources and the USGS and CDC study on drought and arsenic in private wells. Drought reporting is from WRAL coverage of North Carolina's 2026 drought (August 2026) and the Massachusetts Critical Drought declaration. Testing guidance is summarized from EPA private well resources, and well disinfection guidance from University of Nebraska-Lincoln extension resources. NSF standards background is summarized from NSF consumer resources. Product claims are based on Epic Water Filters published testing and certification information. NSF certification and independent contaminant-reduction testing are not the same thing; review each product page and testing documentation for exact standards, claims, and contaminant lists. Product performance can vary by water quality, usage, and filter replacement schedule. A carbon filter is not designed to remove bacteria or viruses and is not a substitute for well testing, disinfection, or advisory guidance. Last updated August 2026.