Is St. Landry, LA Tap Water Safe to Drink?
Graded A-, with 8 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
88.7/100
waterverge.com St. Landry, LA — Water Quality Report
St. Landry's drinking water received a grade of A- (88.7 out of 100), indicating good water quality. The city's 1 water system serves approximately 711 residents using groundwater.
Lead levels were measured at 0.3 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 15 violations on record, including 1 health-based violation. 8 remain unresolved.
What to know about St. Landry's water
St. Landry ranks #34 out of 309 cities in Louisiana for water quality, placing it above average in the state.
St. Landry relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, St. Landry may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is St. Landry, LA water safe to drink?
St. Landry's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (88.7/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 711 residents using groundwater (wells).
Recent water quality updates for St. Landry
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into St. Landry's water quality assessment. Grade: A- (88.7/100).
Contaminants: Chlorine.
Contaminants: Consumer Confidence Rule.
Contaminants: Public Notice.
Key contaminant findings
Based on the most recent EPA sampling data for St. Landry's water supply.
Well within EPA limits.
Violation history
St. Landry's water system has 15 total violations on record, including 1 health-based violation. 8 remain unresolved.
Where does St. Landry's water come from?
St. Landry's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 711 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What St. Landry residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in St. Landry'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
D2 — severe droughtEvangeline Parish is currently in D2 (severe 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. | 0.3 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how St. Landry compares by contaminant
Explore where St. Landry ranks among all Louisiana cities for specific contaminants.
Water source & infrastructure
Where St. Landry's water comes from
St. Landry's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 711 people through 1 water system.
Water systems serving St. Landry
| System Name | PWSID | Population | Source |
|---|---|---|---|
| WARD 5 WATERWORKS DISTRICT 1 - LONE PINE | LA1039017 | 711 | GW |
How St. Landry compares
Full Louisiana rankings →St. Landry's score of 88.7/100 is above the average of 53/100 among major Louisiana cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Louisiana rankings →Learn more about your water
Guides and resources related to St. Landry's water quality findings.
Explore water quality across Evangeline Parish
Frequently asked questions
Is St. Landry, LA tap water safe to drink?
St. Landry's water quality earned a grade of A- (88.7/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #34 out of 309 cities tested in Louisiana.
What contaminants are in St. Landry's water?
Lead was measured at 0.3 ppb (90th percentile). 15 violations are on record.
How is St. Landry'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 St. Landry?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does St. Landry's water come from?
St. Landry's water is sourced from Groundwater. The city has 1 water system serving approximately 711 residents.
What health violations has St. Landry's water system had?
St. Landry has 1 health-based violation on record. The most recent violation was recorded in October 2015. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 8 violations remain unresolved.
Is St. Landry's groundwater at risk of contamination?
St. Landry 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 15 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 St. Landry's water compare to other cities?
St. Landry ranks #34 out of 309 cities in Louisiana (better than 89% of state cities) and #3322 out of 15744 cities nationally (79th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does St. Landry's small water system affect quality?
St. Landry's system serves approximately 711 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 15 violations on record.