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Counties → Louisiana

Ouachita Parish County, Louisiana

Water Systems
31
Population Served
188,938
Total Violations
4,888
3,802 health-based
PFAS Detected
10
of 12 tested

Violation Analysis

93.5%
Systems with Violations
157.7
Avg Violations per System
77.8%
Health-Based Violations

Water Source Types

GW
28 systems (90%)
SW
3 systems (10%)

PFAS Contamination

12
Systems Tested
10
PFAS Detected
83.3%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Ouachita Parish Louisiana water systems by violation status, EPA SDWIS records.

No violations on record (2) One or more violations (29)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Monroe Water System 57,000 67 Detected
West Monroe Water System 16,005 203 Clean
West Hwy 80 Ark Road WS 14,649 217 Clean
Gowc North Water System 13,287 0 Clean
Gowc East Water System 11,742 0 Clean
Cheniere Drew North Water System 11,280 19 Clean
Southwest Ouachita Waterworks, Inc 10,725 426 Clean
Brownville Water System 9,696 201 Clean
Kiroli Darbonne WS 9,210 141 Clean
South Monroe WS Gowc 7,335 282 Clean
Cadeville Water District 6,219 512 Clean
Town & Country Service 5,715 46 Detected
Prairie Road Water District 2,598 312 -
Better Waterworks Water System 2,160 331 -
Indian Village Water System 2,082 409 -
Cheniere Drew South Water System 1,563 68 -
Frost Town Water System 1,551 26 -
L&r North Water System 1,293 269 -
Graphic Packaging International Inc - A 850 11 -
Graphic Packaging International Inc - B 850 10 -
Magnolia-Western Utilities, Inc 789 66 -
Lincoln Hills Subdivision WS 552 156 -
West Ouachita Ind Park 500 107 -
Hidden Oaks Subdivision WS 438 242 -
McClendon Community Water Well 336 130 -
International Paper - West Monroe 200 48 -
Bayou Boeuf RV Park Water System 100 4 -
Ramsey Water System 84 197 -
Pecan Lake Subdivision WS 57 181 -
Egret Landing Water System 42 3 -
Wildwood MHP WS 30 204 -

Other Counties in Louisiana

East Baton Rouge Parish County
19 systems · 650,087 served · 566 violations
Jefferson Parish County
4 systems · 440,987 served · 247 violations
Orleans Parish County
10 systems · 389,093 served · 157 violations
Lafayette Parish County
62 systems · 303,179 served · 2,569 violations
St. Tammany Parish County
213 systems · 266,825 served · 7,149 violations
Caddo Parish County
48 systems · 249,641 served · 5,038 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Ouachita Parish County? ▼
Ouachita Parish County has 4,888 total drinking water violations across 31 water systems, of which 3,802 are health-based violations. 93.5% of systems have at least one violation.
How many people get water from Ouachita Parish County systems? ▼
Water systems in Ouachita Parish County serve approximately 188,938 people through 31 public water systems.
Has PFAS been detected in Ouachita Parish County water? ▼
Of 12 water systems tested for PFAS in Ouachita Parish County, 10 had PFAS detected (83.3% detection rate).
What types of water sources supply Ouachita Parish County? ▼
Water systems in Ouachita Parish County use GW (28 systems), SW (3 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 77.8% of Ouachita Parish County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.