Water Quality in 77478 — Sugar Land, TX
EPA data for CITY OF SUGAR LAND
Data source: U.S. Environmental Protection Agency (EPA) SDWIS Last verified: March 16, 2026
Your Water System
ZIP code 77478 in Sugar Land, Texas is served by CITY OF SUGAR LAND (EPA ID: TX0790005). This system provides water to approximately 90,909 people from surface water sources.
There are 30 community water systems serving this area.
Lead & Copper in Your Water
No Lead & Copper Rule sampling data available for systems serving this ZIP code.
Violation Summary
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| September 1, 2023 | Contaminant 0800 | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for water systems serving this ZIP code:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Contaminant 0800 | Other | 1 | No |
Need help with your water quality?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| CITY OF SUGAR LAND | TX0790005 | 90,909 | Surface water |
| CITY OF SUGAR LAND - NEW TERRITORY | TX0790253 | 15,546 | Groundwater |
| HARRIS COUNTY MUD 168 | TX1011783 | 13,029 | Groundwater |
| CITY OF SUGAR LAND - GREATWOOD | TX0790296 | 12,368 | Groundwater |
| FORT BEND COUNTY MUD 128 | TX0790498 | 10,974 | Surface water |
What You Can Do
- Review your annual Consumer Confidence Report (CCR) — Your utility publishes this each July
- Test your home’s water — Especially if you have older plumbing (pre-1986) that may contain lead
- Stay informed — Bookmark this page to check for updates on your water quality
Need help with water testing or filtration?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Other Water Quality Reports in Texas
- 73301 (Austin) — 10 violations
- 75006 (Carrollton)
- 75014 (Irving)
- 75023 (Plano) — 1 violation
- 75029 (Lewisville) — 26 violations
- 75040 (Garland) — 3 violations
- 75050 (Grand Prairie) — 225 violations
- 75080 (Richardson) — 84 violations
- 75149 (Mesquite) — 4 violations
- 75201 (Dallas) — 10 violations
- 75401 (Greenville) — 6 violations
- 75501 (Texarkana) — 270 violations
- 75601 (Longview) — 1 violation
- 75701 (Tyler) — 13 violations
- 75801 (Palestine) — 17 violations
- 75901 (Lufkin) — 71 violations
- 75961 (Nacogdoches) — 38 violations
- 76001 (Arlington) — 11 violations
- 76101 (Fort Worth) — 7 violations
- 76201 (Denton) — 5 violations
Nearby Water Quality Reports
- 77449 (Katy) — 17 mi — 1 violation
- 77001 (Houston) — 22 mi — 2 violations
- 77501 (Pasadena) — 24 mi — 17 violations
- 77373 (Spring) — 33 mi — 2 violations
- 77301 (Conroe) — 49 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for CITY OF SUGAR LAND (TX0790005) on EPA.gov.
Frequently Asked Questions
Is the tap water in 77478 safe to drink?
Based on EPA records, the water system serving ZIP code 77478 has only monitoring/reporting violations, which are procedural in nature. However, individual home conditions (old pipes, well water) can affect quality.
Where does 77478’s water come from?
The primary water source for this area is surface water. CITY OF SUGAR LAND serves approximately 90,909 people.
How can I get my water tested?
Contact your local water utility for a free water quality report, or hire a certified lab for independent home water testing. The EPA recommends testing annually if you use a private well.
Does 77478 have lead in the water?
No Lead and Copper Rule sampling data is currently available in EPA records for water systems serving ZIP code 77478. If you are concerned about lead, contact your water utility or have your tap water independently tested.
What is the radon risk in 77478?
Radon zone data is not available for ZIP code 77478. The EPA recommends testing all homes for radon regardless of location, as radon levels can vary significantly even within the same neighborhood.