Opelousas
LA

Is Opelousas, LA Tap Water Safe to Drink?

Opelousas tap water meets federal Safe Drinking Water Act standards but 2 of 2 ZIP codes show detections above EPA health guidelines, primarily for lithium. A certified filter is recommended for households that want an additional layer of protection.

7Water systems
2ZIP codes
100%ZIPs above EPA guideline
Metro areaOpelousas, LA
Latest data2025-12-05

Where Does Opelousas Get Its Water?

Water in Opelousas, LA is provided by 7 public water systems: CITY OF OPELOUSAS WATER SYSTEM, LAWTELL WATER WORKS DISTRICT NO 1, PRAIRIE RONDE WATER SYSTEM INC, SAVOY SWORDS WATER SYSTEM INC, ST LANDRY WATER WORKS DISTRICT 2 RURAL, TOWN OF LEONVILLE WATER SYSTEM and TOWN OF PORT BARRE WATER SYSTEM.

How Is Opelousas Tap Water Treated?

Treated water is disinfected using chloramines. Treatment includes direct filtration, groundwater disinfection, in-line filtration and slow sand filtration.

What's in Opelousas Tap Water?

The following contaminants were detected most frequently in Opelousas public water systems. 2 of 2 ZIP codes showed detections above EPA health guidelines.

ContaminantPeak detectedEPA guidelineZIPs detectedStatus
lithium 31.8 µg/L 10 µg/L 2 ZIPs Above guideline
PFTrDA 0.007 µg/L — 0 ZIPs Within guideline
PFBA 0.005 µg/L — 0 ZIPs Within guideline
6:2 FTS 0.005 µg/L — 0 ZIPs Within guideline
11Cl-PF3OUdS 0.005 µg/L — 0 ZIPs Within guideline

Health Risk Profile for Opelousas

Based on EPA monitoring data, 2 of 2 ZIP codes in Opelousas have recorded detections above EPA health guidelines. Sensitive populations such as infants, pregnant individuals, and those with weakened immune systems may benefit from an additional layer of protection such as a certified point-of-use filter.

Best Filters for PFAS Water Profile

PFAS compounds are detected in this water supply. A reverse osmosis (RO) system or an activated-carbon filter specifically certified under NSF/ANSI P473 is required for reliable PFAS reduction. Standard pitcher and faucet filters without P473 certification do not remove PFAS.

Waterdrop G3P600 Reverse Osmosis System
Under-sink RO system

8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.

Epic Pure XP Water Filter Pitcher
Pitcher filter

NSF-certified dual-layer filtration reduces 70+ contaminants including PFAS, lead, chlorine, microplastics, and bacteria.

See recommendations matched to your exact address: choose your ZIP code below.

Frequently Asked Questions about Opelousas Tap Water

Is Opelousas tap water safe to drink?

Opelousas tap water meets Safe Drinking Water Act requirements but 2 of 2 ZIP codes show contaminant levels above EPA health-based guidelines. A certified point-of-use filter adds an extra layer of protection.

What contaminants are in Opelousas tap water?

The most commonly detected contaminants in Opelousas water systems include: lithium, PFTrDA, PFBA. See the ZIP-level reports for exact measurements and EPA guideline comparisons.

Where does Opelousas get its drinking water?

Opelousas receives water from 7 public water systems, including CITY OF OPELOUSAS WATER SYSTEM.

Do I need a water filter in Opelousas?

If your ZIP code is among those with detections above EPA health guidelines, choose a filter certified for the specific contaminants shown in your ZIP report. Reverse osmosis is generally the broadest option for PFAS, lithium, and many other dissolved contaminants.

How often is Opelousas tap water tested?

Public water systems in Opelousas are required by the EPA to test for regulated contaminants on schedules ranging from daily (for microbials and disinfectants) to annual or triennial (for many chemical contaminants). Results are published in annual Consumer Confidence Reports (CCRs). The data on this page reflects the most recent available EPA monitoring results, with the latest sample date of 2025-12-05.

Tap water reports by ZIP in Opelousas

Water utilities serving Opelousas, LA

Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.

Modeled boundaries are shown with a dashed outline.

Also covers / overlaps with