Aging Pipes Are
Poisoning Your Water
9.2 million American homes still receive water through lead service lines. Corroded plumbing leaches lead, copper, and other metals into every glass you drink.
America's Hidden Infrastructure Emergency
The average U.S. water main is over 45 years old. Many pipes in older cities — like Chicago, Newark, and Detroit — are over 100 years old. As these pipes corrode, they release a cocktail of heavy metals, sediment, and bacteria directly into your drinking water.
The EPA's 2024 Lead and Copper Rule Improvements require utilities to replace all lead service lines within 10 years, but the estimated cost is $45 billion. Until then, millions of families are drinking water that flows through lead pipes every day.
See Aging Pipes Up Close
Watch how corrosion builds up inside water pipes over decades, releasing lead particulates, iron oxide, and bacterial biofilms directly into your drinking water.
How Corrosion Contaminates Your Water
Lead doesn't just "fall off" pipes. Corrosion is a complex electrochemical process driven by water chemistry. Understanding these factors reveals why some homes have dangerous lead levels while their neighbors don't.
Low pH (Acidic Water)
Water with a pH below 7.0 is more aggressive and dissolves lead and copper much faster. Even a pH drop from 7.5 to 7.0 can increase lead leaching by 500%. This is exactly what happened in Flint — a change in water source without corrosion control dropped the pH and caused catastrophic lead release.
Stagnant Water
Lead levels in first-draw water (the first water out of the tap in the morning) can be 10–100x higher than after flushing. Water sitting in lead pipes overnight dissolves more lead through prolonged contact time. The EPA recommends flushing cold water for at least 30 seconds before using it for drinking or cooking.
Galvanic Corrosion
When two different metals are connected (lead pipe to copper pipe, or copper to brass), an electrochemical reaction accelerates corrosion at the junction. This 'galvanic corrosion' can release more lead than the pipe alone — and it's extremely common in older plumbing where repairs have mixed materials.
Temperature
Hot water dissolves lead and copper 2–5x faster than cold water. This is why the EPA and CDC recommend never using hot tap water for drinking, cooking, or making baby formula. Water heaters with brass fittings and lead-soldered connections are a significant but often overlooked source of lead exposure.
Pipe-Related Contaminants in Your Water
Aging infrastructure releases multiple contaminants into your water. Each one has different sources, health effects, and regulatory limits.
Lead (Pb)
9.2 million U.S. homes have lead service lines
Health Effects
- Irreversible neurological damage in children
- IQ reduction of 1–5 points per 5 µg/dL blood lead
- Kidney damage and hypertension in adults
- Developmental delays and behavioral problems
Copper (Cu)
Copper plumbing used in 80% of U.S. homes built since 1960
Health Effects
- Gastrointestinal distress at high levels
- Liver and kidney damage from chronic exposure
- Wilson's disease patients at extreme risk
- Green-blue staining of fixtures indicates high levels
Iron & Manganese
Millions of miles of cast iron water mains still in service
Health Effects
- Neurological effects from chronic manganese exposure
- Discolored 'rusty' water — aesthetic but also health concern
- Bacterial growth in iron-rich biofilms
- Staining of laundry, fixtures, and appliances
Chromium-6
Found in water supplies serving 200+ million Americans
Health Effects
- Known human carcinogen (lung, nasal, sinus cancer)
- Liver damage and reproductive toxicity
- Stomach and intestinal cancers from ingestion
- Made famous by Erin Brockovich case
Who Is Most at Risk?
Lead poisoning affects everyone, but children, pregnant women, and the elderly face the greatest dangers. The effects are often irreversible.
Children
- 1–5 point IQ reduction per 5 µg/dL blood lead level
- Behavioral problems: ADHD, aggression, impulsivity
- Delayed puberty and growth stunting
- Learning disabilities and reduced academic performance
- No safe threshold — effects occur at any detectable level
Children absorb 40–50% of ingested lead compared to 3–10% for adults. Their developing brains are exquisitely sensitive to lead's neurotoxic effects. The CDC lowered the blood lead reference value to 3.5 µg/dL in 2021, but many experts argue there is no safe level.
Adults
- Hypertension and cardiovascular disease
- Chronic kidney disease progression
- Reproductive issues: reduced fertility, miscarriage risk
- Peripheral neuropathy (nerve damage)
- Cognitive decline and memory problems
Lead stored in bones from childhood exposure can be re-released during pregnancy, osteoporosis, or aging. Adults with chronic low-level lead exposure have a 70% higher risk of cardiovascular death, according to a 2018 Lancet study analyzing 14,000+ adults over 20 years.
Pregnant Women
- Lead crosses the placental barrier freely
- Associated with preterm birth and low birth weight
- Bone lead mobilization increases during pregnancy
- Fetal brain development disruption
- Increased risk of preeclampsia
During pregnancy, increased bone turnover releases stored lead back into the bloodstream, exposing the fetus even if the mother's current water is clean. Studies show that maternal blood lead levels as low as 2 µg/dL are associated with adverse pregnancy outcomes.
What Water Testing Can Reveal
The comprehensive water test detects pipe-related contaminants using EPA-approved methods like those municipal water systems use — performed at your tap, where it matters most.
Heavy Metals Panel
Using lab analysis by ICP-MS, the lab measures lead, copper, chromium, arsenic, mercury, and other metals and compares them with EPA action levels.
- Lead (Pb) — down to 1 ppb
- Copper (Cu) — full range
- Chromium-6 — below California PHG
- Arsenic, Mercury, Cadmium
- Iron, Manganese, Zinc
Corrosion Indicators
The analysis measures the water chemistry factors that cause pipe corrosion — giving you a complete picture of your plumbing's impact on water quality.
- pH level and alkalinity
- Langelier Saturation Index (LSI)
- Total Dissolved Solids (TDS)
- Chloride-to-sulfate ratio (CSMR)
- Dissolved oxygen content
Don't Wait for a Crisis Like Flint
Testing is the way to assess a specific sample; available panels and methods vary by provider. Kit purchases are unavailable through Hydrology University while provider details are being confirmed.
Purchase unavailable through Hydrology University while provider details are confirmed.
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