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DELHI WATER SUPPLY

PWS ID: LA1083002 · DELHI, Louisiana 71232

DELHI WATER SUPPLY serves 4,071 people in DELHI, Louisiana using Groundwater water sources. It has 19 recorded EPA violations, including 13 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: DELHI WATER SUPPLY

DELHI WATER SUPPLY is a local-owned community water system that delivers drinking water to 4,071 residents in DELHI, Louisiana (Richland Parish County) through 1,357 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 19 total violations for this system , of which 13 (68%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 3 monitoring and reporting violations are on file. The most recent violation on record dates to 2005.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 13 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 22.6 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Louisiana, EPA tracks 1,234 public water systems serving 5,316,532 people, with 115,060 cumulative violations and 62,164 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 93.2 violations. DELHI WATER SUPPLY's 19 violations sit below the Louisiana average. Statewide, 218 of 265 UCMR5-tested systems have reported PFAS detections (82.3%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
4,071
Total Violations
19
Health-Based Violations
13
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,357
County
Richland Parish
School/Daycare
No
MCL Violations
13
Monitoring Violations
3
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 13 1999
Lead and Copper Rule MR 3 2005

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 60 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 9/10/2025 <0.008 µg/L 0.008 µg/L Not Detected
6:2 FTS 9/10/2025 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 9/10/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 9/10/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 9/10/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFHpS 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 9/10/2025 <0.005 µg/L 0.005 µg/L Not Detected
NEtFOSAA 9/10/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 9/10/2025 <0.007 µg/L 0.007 µg/L Not Detected
PFPeS 9/10/2025 <0.004 µg/L 0.004 µg/L Not Detected
lithium 9/10/2025 20.9000 µg/L 9 µg/L Detected
NMeFOSAA 9/10/2025 <0.006 µg/L 0.006 µg/L Not Detected
HFPO-DA 9/10/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 9/10/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 9/10/2025 <0.004 µg/L 0.004 µg/L Not Detected
9Cl-PF3ONS 9/10/2025 <0.002 µg/L 0.002 µg/L Not Detected
PFDA 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 9/10/2025 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 9/10/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFOA 9/10/2025 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 9/10/2025 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 3/3/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 3/3/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeS 3/3/2025 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 3/3/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 3/3/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 3/3/2025 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 3/3/2025 <0.02 µg/L 0.02 µg/L Not Detected
PFHpS 3/3/2025 <0.003 µg/L 0.003 µg/L Not Detected
lithium 3/3/2025 22.6000 µg/L 9 µg/L Detected
PFTA 3/3/2025 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 3/3/2025 <0.007 µg/L 0.007 µg/L Not Detected
NMeFOSAA 3/3/2025 <0.006 µg/L 0.006 µg/L Not Detected
4:2 FTS 3/3/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 3/3/2025 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 3/3/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFHxS 3/3/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 3/3/2025 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 3/3/2025 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 3/3/2025 <0.005 µg/L 0.005 µg/L Not Detected
PFNA 3/3/2025 <0.004 µg/L 0.004 µg/L Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for DELHI WATER SUPPLY.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID LA1083002 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Louisiana Drinking Water Authority

Louisiana's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find LA regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2005 Lead and Copper Rule MR 3 SDWIS / LA1083002 / 5000
1999 Coliform (TCR) MCL 13 SDWIS / LA1083002 / 3100

How DELHI WATER SUPPLY Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric DELHI WATER SUPPLY Louisiana avg Federal benchmark
Total violations 19 93.2 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 13 50.4 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 82.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 4,071 4,308 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,234 regulated public water systems in Louisiana.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is DELHI WATER SUPPLY water safe to drink? ▼
DELHI WATER SUPPLY (PWS ID: LA1083002) has 19 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 4,071 people using Groundwater sources.
How many people does DELHI WATER SUPPLY serve? ▼
DELHI WATER SUPPLY serves 4,071 people in DELHI, Louisiana. It is a Local-owned system using Groundwater water sources with 1,357 service connections.
What type of violations does DELHI WATER SUPPLY have? ▼
DELHI WATER SUPPLY has 19 total violations: 13 health-based violations (MCL exceedances or treatment failures), 3 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in DELHI WATER SUPPLY water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in DELHI WATER SUPPLY's water supply: lithium. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does DELHI WATER SUPPLY use? ▼
DELHI WATER SUPPLY uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

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

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial