A
88

Excellent Water Quality

Sweeny, TX 77480

Brazoria County · Population served: 3,978 · Data updated March 2026

Water Systems Serving This Area

🌊
CITY OF SWEENY
Groundwater · Pop. 3,978
PWSID: TX0200009

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
2.1
15 ppb 1 ppb Warning
Copper
2050.0
1300 ppb 300 ppb Exceeded

Violation History (Last 5 Years)

7Total (5yr)
0Health-Based
0Major

Water Quality Summary

Understanding Your Water in Sweeny

Tap water quality in Sweeny, Texas (77480) receives an overall grade of A (Excellent) with a score of 88 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 20 points above the Texas state average of 68. Compared to the national average (75), this area performs significantly better. The area is served by City Of Sweeny, a groundwater system providing water to approximately 3,978 people. Testing has found elevated levels of Lead, Copper that warrant attention.

Your Score 88/100 A
vs State 20 pts above Texas avg (68)
vs National 13 pts above national avg (75)

What a Grade A Means

A score of 88/100 means the water supply in Sweeny, TX meets or exceeds all EPA standards with minimal issues. Contaminant levels are well within safe limits, and the water system has maintained a strong compliance record. While no water supply is guaranteed perfect at the tap due to household plumbing, this is among the best-scoring areas in the country.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

🔶

Copper in Your Water

Copper can leach into water from copper plumbing, especially in newer homes or when water is acidic.

Health Effects

Short-term exposure above 1,300 ppb can cause gastrointestinal distress. Long-term exposure may cause liver or kidney damage. People with Wilson's disease are especially vulnerable.

Common Sources

Copper pipes, fittings, and faucets are the most common source. Corrosive (low-pH) water accelerates copper leaching.

What You Can Do

If copper levels are elevated, flush pipes by running water for 15–30 seconds before use. Reverse osmosis and distillation systems effectively remove copper.

Common Questions

Frequently Asked Questions

Based on EPA data, tap water in Sweeny, Texas receives a grade of A (Excellent) with a score of 88/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.

ZIP code 77480 is served by 1 water system using groundwater sources, providing water to approximately 3,978 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Lead was detected at 2.1 ppb in Sweeny, Texas. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

No PFAS ("forever chemicals") were detected in water systems serving Sweeny, Texas during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.

Water systems serving Sweeny, Texas have received 7 violations in the last 5 years. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Based on detected contaminants (lead, copper), residents in Sweeny, Texas should consider: NSF/ANSI 53 certified filter — specifically rated for lead reduction. Pitcher filters (like Brita Longlast or PUR) and under-sink systems both work. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

Explore Nearby

Water Quality in Nearby ZIP Codes