Product Comparison

A toxic heavy metal that can leach from old pipes and fixtures. Even low levels cause developmental delays in children, kidney damage, and neurological issues. The EPA action level is 15 ppb, but there's no safe level.

Per- and polyfluoroalkyl substances (PFAS) are synthetic 'forever chemicals' that don't break down in the environment. Linked to cancer, thyroid disease, and immune system problems. Found in 98% of Americans' blood.

Tiny plastic particles (<5mm) now found in tap water, bottled water, and even rainwater worldwide. Research suggests potential inflammation, cellular damage, and hormone disruption from long-term exposure.

The 'Erin Brockovich' chemical. This carcinogenic form of chromium occurs naturally but is also released by industrial processes. California set a limit of 10 ppb, but it's found in 75% of US water supplies.

A naturally occurring element that's highly toxic. Long-term exposure through drinking water increases risk of cancer, heart disease, and diabetes. Common in well water in certain regions.

Commonly from fertilizer runoff and septic systems. Dangerous for infants (blue baby syndrome) and linked to certain cancers in adults. EPA limit is 10 mg/L.

Added to many water supplies for dental health, but excess fluoride causes dental and skeletal fluorosis. Some people prefer to remove it due to health concerns about long-term exposure.

Used to disinfect water but can create harmful byproducts (THMs, HAAs) when it reacts with organic matter. Also causes unpleasant taste and odor. Easy to remove with basic filtration.

A combination of chlorine and ammonia used as a longer-lasting disinfectant. Harder to remove than chlorine. Can cause respiratory issues and is harmful to fish and dialysis patients.

A broad category including herbicides, insecticides, and fungicides. Many are endocrine disruptors. Common in agricultural areas. Some like atrazine are found in 94% of US water supplies.

Chemicals used to kill weeds, including glyphosate (Roundup) and atrazine. Many persist in water and are linked to cancer and hormone disruption. Common in farming regions.

A known human carcinogen found in industrial emissions and petroleum products. Can contaminate groundwater near gas stations and industrial sites. EPA limit is 5 ppb.

A naturally occurring radioactive element found in groundwater in certain regions. Long-term exposure increases cancer risk, particularly bone cancer. Common in parts of the Midwest and Southwest.

One of the most commonly used herbicides in the US. A known endocrine disruptor linked to reproductive problems. Banned in the EU but found in 94% of US water tested by USDA.

Bisphenol A is an industrial chemical used in plastics. It's an endocrine disruptor linked to heart disease, diabetes, and developmental problems. Can leach from plastic containers into water.

A neurotoxin that accumulates in the body over time. Particularly dangerous for pregnant women and children. Can enter water through industrial pollution and natural deposits.

Essential in small amounts but toxic at high levels. Usually enters water through corroded copper pipes. Causes gastrointestinal issues and liver/kidney damage at high concentrations.

Naturally occurring and essential in trace amounts, but excess manganese causes neurological problems. Can cause black staining on fixtures. Common in well water.