Is Round Rock Tap Water Safe to Drink?

Round Rock municipal water is safe to drink. The city draws primarily from Lake Georgetown, with secondary sources including Lake Stillhouse Hollow, the Edwards Aquifer, and Lake Travis (via the Brushy Creek Regional Utility Authority). Water is treated to EPA standards before distribution to homes throughout Round Rock and surrounding communities. The City of Round Rock publishes an annual Consumer Confidence Report (CCR) documenting test results — every reported contaminant is below the regulatory limit.

That said, "safe to drink" and "tastes good" are different. Round Rock water is very hard and disinfected with chloramine, which leaves a noticeable taste that many homeowners filter out for drinking water.

What Is In Round Rock Tap Water

Based on the most recent City of Round Rock CCR data:

Hardness: 15-25 grains per gallon (very hard). Calcium and magnesium minerals are the dominant dissolved solids. Not a health concern — they are minerals you actually need — but cause significant plumbing and appliance issues. See hard water problems and solutions.

Chloramine: Used as the residual disinfectant in distribution. Chloramine is more stable than chlorine alone and provides better disinfection through the long pipe runs in the system. Has a distinct taste and smell, particularly noticeable at the kitchen tap.

Fluoride: Added per public health guidelines, typically around 0.7 mg/L.

Trace contaminants: All within EPA limits. The CCR lists specific levels of common contaminants — lead, copper, nitrates, disinfection byproducts, etc.

pH: Typically 7.5-8.5 (slightly alkaline).

Where the Water Comes From

The Brushy Creek Regional Utility Authority (BCRUA) was formed by Round Rock, Cedar Park, and Leander to develop a regional water supply drawn from the Lower Colorado River Authority (which manages Lake Travis among other reservoirs). BCRUA is one of Round Rock's supply sources alongside the city's primary Lake Georgetown intake.

Round Rock's municipal water system then distributes the treated water through pipes throughout the city to homes and businesses.

The City of Round Rock Utilities Department is responsible for water quality from the treatment plant to your meter. Pipes inside your home are the homeowner's responsibility — and aged interior pipes can affect water quality at your tap even when the municipal supply is fine.

What Most Homeowners Filter Out (And Why)

Even though municipal water is EPA-compliant, many Round Rock homeowners filter for:

Taste. Chloramine has a distinct flavor. A simple carbon filter (Brita, refrigerator filter, under-sink carbon) removes it effectively.

Hardness. Very few drinking-water filters remove hardness (carbon filters do not). For drinking water free of dissolved minerals, reverse osmosis is the standard.

Sediment. Occasionally older mains shed bits of sediment. A whole-home sediment pre-filter catches it.

Lead from old plumbing. If your home was built before 1986 and uses lead solder in copper joints, trace lead may leach into water. Lead-specific carbon filters (NSF/ANSI 53 certified) reduce this.

Old galvanized pipe in your home. If your home still has galvanized supply, the interior of that pipe contributes rust and metals — visible as orange water in some cases. Solution: repipe, not filter.

Common Filtration Choices

| Filtration | What it removes | Round Rock typical install cost |

|---|---|---|

| Refrigerator filter (carbon) | Taste, chlorine/chloramine, sediment | Built-in, ~$50 replacement filter |

| Pitcher filter (Brita-type) | Taste, chlorine | $30-100 |

| Faucet-mount filter | Taste, chlorine, some lead | $40-150 |

| Under-sink carbon (single stage) | Better taste/chlorine removal, some lead | $200-450 installed |

| Under-sink reverse osmosis | Hardness, most dissolved solids, lead, fluoride | $400-1,200 installed |

| Whole-home carbon filter (point-of-entry) | Chlorine/chloramine for shower, drinking, and bathing | $800-2,000 installed |

| Whole-home water softener | Hardness | $1,500-3,500 installed |

For most Round Rock homes, the right combination is: whole-home water softener + under-sink RO for drinking water.

Should You Be Worried About Lead?

Round Rock's municipal supply has no detectable lead at the source. Lead in tap water typically comes from one of two sources at the home:

Lead service line between the street main and the meter — uncommon in Round Rock subdivisions built post-1960
Lead-tin solder in copper joints in homes built before 1986

If your home was built before 1986, consider testing tap water for lead — local labs do this for $30-80. If lead is detected above 5 ppb, install an NSF/ANSI 53 certified lead filter at the kitchen tap.

Water Quality During Boil Advisories

The City of Round Rock issues boil water advisories occasionally — typically after main breaks or treatment plant issues. During an advisory:

Boil water at a rolling boil for at least 1 minute before drinking, cooking, or making ice
Do not use ice from the icemaker until the advisory lifts and the icemaker has cycled fresh ice
Brush teeth with bottled water
Hand-washing with tap water is generally fine

What to Test If You Are Concerned

Most homeowners do not need to test their water beyond what the city already publishes. But if you have specific concerns:

Lead — $30-80 from a certified lab
Bacteria — $30-50 from a certified lab (especially relevant if you have well water, but municipal water is generally safe)
Hardness — free with our consultation, or DIY test strips at hardware stores
General drinking water quality — $150-300 for a multi-panel home water test

Texas A&M AgriLife Extension and other certified labs in Central Texas process residential water samples.

Service

Water filtration, softener installation, and water quality consultation throughout Round Rock, Cedar Park, Pflugerville, Georgetown, and Hutto.