WaterVerge

Is Oak Ridge, LA Tap Water Safe to Drink?

Graded A-, with 6 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓

714 residents served 2 water systems PWSID: LA1067014
Overall Score
89.9 / 100
Violations
6 active
Last Updated
May 2026
Source
Groundwater
#23 of 309 in Louisiana Top 16% nationally
Local Government
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
A-GRADE
Water Quality Grade
89.9/100
waterverge.com
A- 89.9/100

Oak Ridge, LA — Water Quality Report

Oak Ridge's drinking water received a grade of A- (89.9 out of 100), indicating good water quality. The city's 2 water systems serve approximately 714 residents using groundwater.

Lead levels were measured at 0.5 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 16 violations on record, including 4 health-based violations. 6 remain unresolved.

Data last updated: May 2026 · Source: EPA SDWIS, UCMR 5
Analysis

What to know about Oak Ridge's water

Oak Ridge ranks #23 out of 309 cities in Louisiana for water quality, placing it one of the best in the state.

Oak Ridge 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, Oak Ridge may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

Quality Breakdown

Water quality score

See methodology →
89.9 out of 100 Grade A-
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
42.9/45
A
Historical violation record including health-based and monitoring violations.
Lead & Copper
20/20
A
Lead at 0.5 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
5/10
D
Monitoring and reporting compliance with EPA regulations.
Source Risk
5/5
A
Water source: Groundwater.
Water Safety

Is Oak Ridge, LA water safe to drink?

Concerns Identified

Oak Ridge's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (89.9/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 714 residents using groundwater (wells).

6
Active Violations
0.5 ppb
Lead (90th %ile)

Recent water quality updates for Oak Ridge

A timeline of significant water quality events, violations, and data updates.

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Oak Ridge's water quality assessment. Grade: A- (89.9/100).

Violation
1 drinking water violation recorded

Contaminants: Consumer Confidence Rule.

Violation
1 drinking water violation recorded

Contaminants: Lead and Copper Rule.

Violation
1 drinking water violation recorded

Contaminants: Coliform (TCR).

Key contaminant findings

Based on the most recent EPA sampling data for Oak Ridge's water supply.

Lead Within Limits
Detected: 0.5 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Violation history

Oak Ridge's water system has 16 total violations on record, including 4 health-based violations. 6 remain unresolved.

OtherMRMCL
Most recent violations:
Oct 2017 Consumer Confidence Rule Open
Oct 2014 Lead and Copper Rule Open
Nov 2012 Coliform (TCR) Resolved
Jul 2012 TTHM Resolved
Jul 2012 Total Haloacetic Acids (HAA5) Resolved

Where does Oak Ridge's water come from?

Oak Ridge's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 714 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 Bonne Idee East Of Oak Ridge (river), Boeuf River Near Girard (river), Bayou Lafourche Near Crew Lake (river).

What Oak Ridge residents can do

Install a water filter

Recommended: NSF-certified water filter. This addresses the specific contaminants found in Oak Ridge's water.

Request your utility's CCR

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.

Contaminant Alerts

Top contaminants to know

View all ↓
Lead (90th percentile)
Inorganic / Heavy Metal
Safe
0.5 ppb
EPA Action Level: 15 ppb · 3% of limit
Safe Level
Compliance Record

Violation summary

16
Total violations
4
Health-based
6
Active / unresolved
Oct 2017
Most recent violation
Compliance Record

Violations & advisories

16 Total
6 Active
4 Health-based
10 Resolved
Violations by category
Consumer Confidence Rule
5
Total Coliform Rule
5
Lead and Copper Rule
2
Stage 1 Disinfectants and Disinfection Byproducts Rule
2
Oct 2017 Active
Consumer Confidence Rule
Other Violation 0
Oct 2014 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Jul 2008 Active
Consumer Confidence Rule
Other Violation 0
Jul 2005 Active
Consumer Confidence Rule
Other Violation 0
Active
Compliance Violation
Monitoring 0
Active
Compliance Violation
Monitoring 0
Nov 2012 Resolved
Coliform (TCR)
Monitoring & Reporting
Monitoring & Reporting Resolved Nov 2012
Jul 2012 Resolved
TTHM
Monitoring & Reporting
Monitoring & Reporting Resolved Sep 2012
Jul 2012 Resolved
Total Haloacetic Acids (HAA5)
Monitoring & Reporting
Monitoring & Reporting Resolved Sep 2012
Oct 2007 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Oct 2007
Oct 1999 Resolved
Consumer Confidence Rule
Other Violation Resolved Jul 2000
Oct 1999 Resolved
Consumer Confidence Rule
Other Violation Resolved Oct 2000
May 1998 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved May 1998
Jul 1995 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Jul 1995
Nov 1993 Resolved
Coliform (TCR)
Max Contaminant Level
Health-Based Health Resolved Nov 1993
Jul 1993 Resolved
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 1994
Environmental Risk

Drought conditions

D3 — extreme drought

Morehouse 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.

6
Weeks at D2+ (current streak)
12.8%
Months in D2+ (last 30y)
6
Weeks at D2+ (last 5y)

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) 0.5 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

Lead level trend (90th percentile)

EPA action level: 15 ppb
Lead has decreased by 0.5 ppb from 2002 (1.0 ppb) to 2025 (0.5 ppb).
Infrastructure

Water source & infrastructure

Primary Source
Groundwater
Operator
Local Government
Population Served
714
Water Systems
2
Water Source

Where Oak Ridge's water comes from

Groundwater

Oak Ridge'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 714 people through 2 water systems.

Local Hydrology

Water bodies near Oak Ridge

Oak Ridge is located near 3 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.

Bayou Bonne Idee East Of Oak Ridge
river
Boeuf River Near Girard
river
Bayou Lafourche Near Crew Lake
river
Infrastructure

Water systems serving Oak Ridge

System Name PWSID Population Source
OAK RIDGE WATER SYSTEM LA1067014 369 GW
SOUTH BONNE IDEE WATER SYSTEM LA1067020 345 GW
Regional Comparison

How Oak Ridge compares

Full Louisiana rankings →

Oak Ridge's score of 89.9/100 is above the average of 53/100 among major Louisiana cities. It outscores 10 of 10 nearby cities.

Oak Ridge (this city)
89.9
Jefferson
85.8
Lafayette
35.1
Shreveport
36.5
Louisiana avg
53
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Frequently asked questions

Is Oak Ridge, LA tap water safe to drink?

Oak Ridge's water quality earned a grade of A- (89.9/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #23 out of 309 cities tested in Louisiana.

What contaminants are in Oak Ridge's water?

Lead was measured at 0.5 ppb (90th percentile). 16 violations are on record.

How is Oak Ridge'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 Oak Ridge?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Oak Ridge's water come from?

Oak Ridge's water is sourced from Groundwater. The city has 2 water systems serving approximately 714 residents.

What health violations has Oak Ridge's water system had?

Oak Ridge has 4 health-based violations on record. The most recent violation was recorded in October 2017. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 6 violations remain unresolved.

Is Oak Ridge's groundwater at risk of contamination?

Oak Ridge 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 16 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 Oak Ridge's water compare to other cities?

Oak Ridge ranks #23 out of 309 cities in Louisiana (better than 93% of state cities) and #2529 out of 15744 cities nationally (84th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.