Is Grosse Tete, LA Tap Water Safe to Drink?
Graded B, with 6 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
78.5/100
waterverge.com Grosse Tete, LA — Water Quality Report
Grosse Tete's drinking water received a grade of B (78.5 out of 100), indicating good water quality. The city's 1 water system serves approximately 954 residents using purchased ground water.
Lead levels were measured at 2.0 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 11 violations on record, including 4 health-based violations. 6 remain unresolved.
What to know about Grosse Tete's water
Grosse Tete ranks #116 out of 309 cities in Louisiana for water quality, placing it mid-range in the state.
Grosse Tete purchases its water from a regional wholesaler, meaning quality depends on both the supplier's treatment and the local distribution system's condition.
As a small community water system, Grosse Tete may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Grosse Tete, LA water safe to drink?
Grosse Tete's drinking water has significant quality concerns based on EPA testing data. With a grade of B (78.5/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 954 residents using groundwater (wells).
Recent water quality updates for Grosse Tete
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Grosse Tete's water quality assessment. Grade: B (78.5/100).
Contaminants: Public Notice.
1 health-based. Contaminants: TTHM.
1 health-based. Contaminants: LEAD AND COPPER RULE REVISIONS.
Key contaminant findings
Based on the most recent EPA sampling data for Grosse Tete's water supply.
Well within EPA limits.
Violation history
Grosse Tete's water system has 11 total violations on record, including 4 health-based violations. 6 remain unresolved. 4 violations were issued in the last 5 years.
Where does Grosse Tete's water come from?
Grosse Tete's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 954 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Bayou Grosse Tete S. Of I10 At Grosse Tete (river), Choctaw Bayou At I-10 East Of Grosse Tete (river).
What Grosse Tete residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Grosse Tete'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.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Drought conditions
D1 — moderate droughtIberville Parish is currently in D1 (moderate 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.
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. | 2.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Grosse Tete compares by contaminant
Explore where Grosse Tete ranks among all Louisiana cities for specific contaminants.
Water source & infrastructure
Where Grosse Tete's water comes from
Grosse Tete purchases its water supply from a regional wholesale provider rather than treating raw water directly.
Water quality depends on both the wholesaler's treatment standards and the condition of Grosse Tete's local distribution pipes and storage facilities.
Purchased water systems are common in suburban areas and smaller communities that lack the infrastructure for independent treatment.
The system is operated by local government ownership and serves approximately 954 people through 1 water system.
Water bodies near Grosse Tete
Grosse Tete is located near 2 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Grosse Tete
| System Name | PWSID | Population | Source |
|---|---|---|---|
| VILLAGE OF GROSSE TETE WATER SYSTEM | LA1047001 | 954 | GWP |
How Grosse Tete compares
Full Louisiana rankings →Grosse Tete's score of 78.5/100 is above the average of 53/100 among major Louisiana cities. It outscores 8 of 10 nearby cities.
Nearby cities
View Louisiana rankings →About Grosse Tete, LA
Wikipedia →Grosse Tête is a village in Iberville Parish, Louisiana, United States. The population was 647 at the 2010 census, and 731 at the 2019 American Community Survey. The village name is French for "Big Head". Grosse Tête is part of the Baton Rouge metropolitan statistical area.
Learn more about your water
Guides and resources related to Grosse Tete's water quality findings.
Explore water quality across Iberville Parish
Frequently asked questions
Is Grosse Tete, LA tap water safe to drink?
Grosse Tete's water quality earned a grade of B (78.5/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #116 out of 309 cities tested in Louisiana.
What contaminants are in Grosse Tete's water?
Lead was measured at 2.0 ppb (90th percentile). 11 violations are on record.
How is Grosse Tete'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 Grosse Tete?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Grosse Tete's water come from?
Grosse Tete's water is sourced from Purchased ground water. The city has 1 water system serving approximately 954 residents.
What health violations has Grosse Tete's water system had?
Grosse Tete has 4 health-based violations on record. The most recent violation was recorded in July 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 6 violations remain unresolved.
Is Grosse Tete's groundwater at risk of contamination?
Grosse Tete uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 11 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Grosse Tete's water compare to other cities?
Grosse Tete ranks #116 out of 309 cities in Louisiana (better than 62% of state cities) and #8678 out of 15744 cities nationally (45th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Grosse Tete's small water system affect quality?
Grosse Tete's system serves approximately 954 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 11 violations on record.