D34/100
Robstown Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 19,370 residents · Texas
What's In Robstown's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
2
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 244.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
3
Health-Related
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: April 1, 2022 – June 30, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: January 1, 2022 – March 31, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: October 1, 2021 – December 31, 2021Rule: Stage 2 DBPREnforcement: Formal — state order issued
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
NUECES COUNTY WCID 3
Population Served
14,000
Water Source
Surface Water
System ID
TX1780005
RIVER ACRES WSC
Population Served
2,700
Water Source
Purchased Surface Water
System ID
TX1780013
VIOLET WSC
Population Served
2,670
Water Source
Purchased Surface Water
System ID
TX1780015
Frequently Asked Questions About Robstown Water
Is Robstown tap water safe to drink?
Robstown, Texas tap water receives a grade of D (34/100), which is considered poor. 0 contaminant(s) exceed EPA maximum contaminant levels and 70 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Robstown's water?
Of the 69 contaminants tested in Robstown's water supply, the most notable include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Robstown have any water quality violations?
Yes, Robstown has 70 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, MR, Other. 29 of these are health-based violations, which are the most serious category.
Do I need a water filter in Robstown?
Robstown water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 2 contaminant(s) exceed these stricter goals.
Where does Robstown's tap water come from?
Robstown's drinking water is sourced from surface water and supplied by NUECES COUNTY WCID 3 and 2 other water system(s). The system serves approximately 19,370 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Robstown's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Robstown's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Robstown's water compare to other cities in Texas?
Robstown's water quality score of 34/100 earns a grade of D, which is considered poor. This is a concerning score that suggests significant water quality issues. Visit our Texas state page to see how all cities in the state compare.
What should I do if I'm concerned about Robstown's water quality?
If you have concerns about Robstown's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (NUECES COUNTY WCID 3) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.