Is Wisner, LA Tap Water Safe to Drink?
Graded C-, with 26 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
55.9/100
waterverge.com Wisner, LA — Water Quality Report
Wisner's drinking water received a grade of C- (55.9 out of 100), indicating poor water quality. The city's 1 water system serves approximately 1,221 residents using groundwater.
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 29 violations on record, including 8 health-based violations. 26 remain unresolved.
What to know about Wisner's water
Wisner ranks #188 out of 309 cities in Louisiana for water quality, placing it below average in the state.
Wisner 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, Wisner may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 12 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Wisner, LA water safe to drink?
Wisner's drinking water has significant quality concerns based on EPA testing data. With a grade of C- (55.9/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,221 residents using groundwater (wells).
Recent water quality updates for Wisner
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Wisner's water quality assessment. Grade: C- (55.9/100).
Contaminants: Consumer Confidence Rule.
Contaminants: Public Notice.
2 health-based. Contaminants: Groundwater Rule.
Key contaminant findings
Based on the most recent EPA sampling data for Wisner's water supply.
Well within EPA limits.
Violation history
Wisner's water system has 29 total violations on record, including 8 health-based violations. 26 remain unresolved. 12 violations were issued in the last 5 years.
Where does Wisner's water come from?
Wisner's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,221 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 Macon Northeast Of Gilbert (river).
What Wisner residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Wisner'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
D3 — extreme droughtFranklin Parish 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.
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 Wisner compares by contaminant
Explore where Wisner ranks among all Louisiana cities for specific contaminants.
Water source & infrastructure
Where Wisner's water comes from
Wisner'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 1,221 people through 1 water system.
Water bodies near Wisner
Wisner is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Wisner
| System Name | PWSID | Population | Source |
|---|---|---|---|
| WISNER WATER SYSTEM | LA1041007 | 1,221 | GW |
How Wisner compares
Full Louisiana rankings →Wisner's score of 55.9/100 is on par with the average of 53/100 among major Louisiana cities. It outscores 7 of 10 nearby cities.
Nearby cities
View Louisiana rankings →About Wisner, LA
Wikipedia →Wisner is a town in Franklin Parish, Louisiana, United States. As of the 2020 census, Wisner had a population of 771.
Learn more about your water
Guides and resources related to Wisner's water quality findings.
Explore water quality across Franklin Parish
Frequently asked questions
Is Wisner, LA tap water safe to drink?
Wisner's water quality earned a grade of C- (55.9/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #188 out of 309 cities tested in Louisiana.
What contaminants are in Wisner's water?
Lead was measured at 2.0 ppb (90th percentile). 29 violations are on record.
How is Wisner'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 Wisner?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Wisner's water come from?
Wisner's water is sourced from Groundwater. The city has 1 water system serving approximately 1,221 residents.
What health violations has Wisner's water system had?
Wisner has 8 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. 26 violations remain unresolved.
Is Wisner's groundwater at risk of contamination?
Wisner 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 29 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 Wisner's water compare to other cities?
Wisner ranks #188 out of 309 cities in Louisiana (better than 39% of state cities) and #12502 out of 15744 cities nationally (21th percentile). The grade of C- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Wisner's small water system affect quality?
Wisner's system serves approximately 1,221 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 29 violations on record.