Is Gregory, TX Tap Water Safe to Drink?
Graded B, with 14 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
77.9/100
waterverge.com Gregory, TX — Water Quality Report
Gregory's drinking water received a grade of B (77.9 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,760 residents using purchased surface water.
Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 31 violations on record, including 3 health-based violations. 14 remain unresolved.
What to know about Gregory's water
Gregory ranks #418 out of 1067 cities in Texas for water quality, placing it mid-range in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Gregory may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Gregory, TX water safe to drink?
Gregory's drinking water has significant quality concerns based on EPA testing data. With a grade of B (77.9/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,760 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Gregory
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Gregory's water quality assessment. Grade: B (77.9/100).
Contaminants: Public Notice.
1 health-based. Contaminants: LEAD AND COPPER RULE REVISIONS.
Federal disaster declaration (FEMA DR-4798). Hurricane event — may have impacted local water infrastructure.
Contaminants: Lead and Copper Rule.
Federal disaster declaration (FEMA DR-3540). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Gregory's water supply.
Well within EPA limits.
Violation history
Gregory's water system has 31 total violations on record, including 3 health-based violations. 14 remain unresolved. 4 violations were issued in the last 5 years.
Flood & environmental risk
San Patricio County has experienced 10 federally declared disasters since 2007. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.
Where does Gregory's water come from?
Gregory's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 1,760 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment.
What Gregory residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Gregory's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Gregory's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Gregory
Industrial polluters nearby
Reported releases to surface water by facilities near Gregory, ranked by pounds discharged annually.
Total reported releases to surface water: 73,838 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
GULF COAST GROWTH VENTURES LLC GREGORY, TX78359 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 73,285 | 1.3 mi |
ARCELORMITTAL TEXAS HBI LLC PORTLAND, TX78374 | Manganese | 259 | 3.0 mi |
OCCIDENTAL CHEMICAL CORP GREGORY, TX78359 | Copper And Copper Compounds | 222 | 0.7 mi |
KIEWIT OFFSHORE SERVICES LTD INGLESIDE, TX78362 | Manganese | 68 | 6.6 mi |
FLINT HILLS RESOURCES INGLESIDE LLC INGLESIDE, TX78362 | Lead compounds | 3 | 8.0 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites within 10 miles of Gregory
Superfund sites nearby
Federally tracked hazardous-waste sites on the EPA National Priorities List. Proximity does not necessarily indicate tap-water contamination — the connection depends on hydrology and treatment.
- FALCON REFINERY8.1 mi
Source: EPA Superfund National Priorities List
Drought conditions
D3 — extreme droughtSan Patricio County is currently in D3 (extreme drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
San Patricio County has experienced 10 federally declared disasters since 2007. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Gregory compares by contaminant
Explore where Gregory ranks among all Texas cities for specific contaminants.
Water source & infrastructure
Where Gregory's water comes from
Gregory's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by local government ownership and serves approximately 1,760 people through 1 water system.
Water systems serving Gregory
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CITY OF GREGORY | TX2050001 | 1,760 | SWP |
How Gregory compares
Full Texas rankings →Gregory's score of 77.9/100 is above the average of 46/100 among major Texas cities. It outscores 8 of 10 nearby cities.
Nearby cities
View Texas rankings →About Gregory, TX
Learn more about your water
Guides and resources related to Gregory's water quality findings.
Explore water quality across San Patricio
Frequently asked questions
Is Gregory, TX tap water safe to drink?
Gregory's water quality earned a grade of B (77.9/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #418 out of 1067 cities tested in Texas.
What contaminants are in Gregory's water?
Lead was measured at 0.0 ppb (90th percentile). 31 violations are on record.
How is Gregory's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Gregory?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Gregory's water come from?
Gregory's water is sourced from Purchased surface water. The city has 1 water system serving approximately 1,760 residents.
What health violations has Gregory's water system had?
Gregory has 3 health-based violations on record. The most recent violation was recorded in May 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 14 violations remain unresolved.
How does Gregory's water compare to other cities?
Gregory ranks #418 out of 1067 cities in Texas (better than 61% of state cities) and #8858 out of 15744 cities nationally (44th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Gregory's small water system affect quality?
Gregory's system serves approximately 1,760 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 31 violations on record.