5 Common Reasons for Black Specks in Water

Nothing beats a cold glass of fresh, clear water. But when you notice black specks in water, it’s more than unappealing, it could be a sign of a bigger plumbing issue. While some black particles may be harmless, others can signal problems with your pipes, water heater, or filtration system.

Here are the five most common reasons you may see specks in your water and what to do about them.

1. Black Specks in Water From Pipe Corrosion

If your home has aging metal pipes, the specks may be caused by corrosion. Rust and metal fragments can break off from the inside of your pipes and enter your water supply.

• Often more noticeable in cold water taps

• May appear after water hasn’t been used for several hours

• Could lead to major leaks if left untreated

A licensed plumber can inspect your plumbing and recommend whether you need pipe repair or full replacement.

2. Excess Minerals

Trace minerals like iron and manganese are common in many municipal water supplies. While usually not dangerous, they can create unsightly water.

• Can come directly from the city’s water system

• May require professional water testing to identify the problem

• Solutions often involve filtration or water softening

3. Old or Failing Water Filters

If you use a water filtration system, specks may come from granular activated carbon (GAC) filters breaking down over time.

• More common with tap-based or pitcher filters

• Easily fixed by replacing the filter regularly

• For larger systems, consider professional service to ensure safe replacement

4. Black Specks in Water From Corroded Water Heater

If you only see specks when using hot water, your water heater may be the source. Over time, internal components can corrode, releasing black particles into your water.

• Indicates that your water heater may be nearing the end of its lifespan

• Replacement is often the best long-term solution

• Always hire a professional—DIY water heater replacement can be dangerous

5. Damaged Rubber Gaskets or Hoses

If the specks are rubbery in texture, the culprit may be a deteriorating gasket, washer, or supply hose.

• Can lead to leaks and costly water damage if ignored

• Immediate inspection is necessary to prevent major issues

• A plumber can locate the failing part and replace it quickly

Black Specks in Your Water? Bieg Plumbing & Mechanical Has the Solution.

If you’re noticing specks in your tap water, don’t ignore it. Whether it’s corroded pipes, a failing water heater, or old filtration parts, the experts at Bieg Plumbing & Mechanical can diagnose the issue and fix it fast.

For over 60 years, Bieg Plumbing & Mechanical has been a trusted plumbing company in St. Louis City, St. Louis County, St. Charles County, Clayton, Chesterfield, Jefferson County, and the surrounding areas. Our licensed plumbers provide expert solutions for both residential and commercial plumbing problems.