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DUPLEX VILLAGE WATER SYSTEM

PWS ID: OR4101397 · SALEM, Oregon 97305

DUPLEX VILLAGE WATER SYSTEM serves 165 people in SALEM, Oregon using Groundwater water sources. It has 147 recorded EPA violations, including 16 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: DUPLEX VILLAGE WATER SYSTEM

DUPLEX VILLAGE WATER SYSTEM is a private-owned community water system that delivers drinking water to 165 residents in SALEM, Oregon (Marion County) through 45 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 147 total violations for this system , of which 16 (11%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 112 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 31 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Oregon, EPA tracks 2,518 public water systems serving 4,005,242 people, with 206,659 cumulative violations and 20,339 health-based violations on record. About 99% of systems in the state carry at least one violation, and state-wide the average per system is 82.1 violations. DUPLEX VILLAGE WATER SYSTEM's 147 violations sit above the Oregon average. Statewide, 30 of 125 UCMR5-tested systems have reported PFAS detections (24%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
165
Total Violations
147
Health-Based Violations
16
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
45
County
Marion
School/Daycare
No
MCL Violations
16
Monitoring Violations
112
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 31 2015
Coliform (TCR) MCL 16 2014
Consumer Confidence Rule Other 15 2025
Nitrate MR 3 2023
Arsenic MR 2 2002
Chromium MR 2 2002
Fluoride MR 2 2002
Mercury MR 2 2002
Nickel MR 2 2002
Antimony, Total MR 2 2002
Beryllium, Total MR 2 2002
Thallium, Total MR 2 2002
Selenium MR 2 2002
Barium MR 2 2002
Lead and Copper Rule MR 2 2023
Cadmium MR 2 2002
CYANIDE MR 2 2002
Nitrite MR 1 2002
cis-1,2-Dichloroethylene MR 1 2002
Xylenes, Total MR 1 2002
DICHLOROMETHANE MR 1 2002
1,1-Dichloroethylene MR 1 2002
trans-1,2-Dichloroethylene MR 1 2002
1,1,2-Trichloroethane MR 1 2002
Tetrachloroethylene MR 1 2002
CHLOROBENZENE MR 1 2002
Benzene MR 1 2002
Ethylbenzene MR 1 2002
Styrene MR 1 2002
BHC-GAMMA MR 1 2002

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 DUPLEX VILLAGE WATER SYSTEM.

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 OR4101397 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Oregon Drinking Water Authority

Oregon'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 OR 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
2025 Consumer Confidence Rule Other 15 SDWIS / OR4101397 / 7000
2023 Nitrate MR 3 SDWIS / OR4101397 / 1040
2023 Lead and Copper Rule MR 2 SDWIS / OR4101397 / 5000
2019 E. COLI MR 1 SDWIS / OR4101397 / 3014
2015 Coliform (TCR) MR 31 SDWIS / OR4101397 / 3100
2014 Coliform (TCR) MCL 16 SDWIS / OR4101397 / 3100
2002 Arsenic MR 2 SDWIS / OR4101397 / 1005
2002 Chromium MR 2 SDWIS / OR4101397 / 1020
2002 Fluoride MR 2 SDWIS / OR4101397 / 1025
2002 Mercury MR 2 SDWIS / OR4101397 / 1035
2002 Nickel MR 2 SDWIS / OR4101397 / 1036
2002 Antimony, Total MR 2 SDWIS / OR4101397 / 1074
2002 Beryllium, Total MR 2 SDWIS / OR4101397 / 1075
2002 Thallium, Total MR 2 SDWIS / OR4101397 / 1085
2002 Selenium MR 2 SDWIS / OR4101397 / 1045

How DUPLEX VILLAGE WATER SYSTEM Compares

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

Metric DUPLEX VILLAGE WATER SYSTEM Oregon avg Federal benchmark
Total violations 147 82.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 16 8.1 Indicates a contaminant exceeded a federal MCL
PFAS detection None 24% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 165 1,591 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,518 regulated public water systems in Oregon.

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 DUPLEX VILLAGE WATER SYSTEM water safe to drink? ▼
DUPLEX VILLAGE WATER SYSTEM (PWS ID: OR4101397) has 147 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 165 people using Groundwater sources.
How many people does DUPLEX VILLAGE WATER SYSTEM serve? ▼
DUPLEX VILLAGE WATER SYSTEM serves 165 people in SALEM, Oregon. It is a Private-owned system using Groundwater water sources with 45 service connections.
What type of violations does DUPLEX VILLAGE WATER SYSTEM have? ▼
DUPLEX VILLAGE WATER SYSTEM has 147 total violations: 16 health-based violations (MCL exceedances or treatment failures), 112 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in DUPLEX VILLAGE WATER SYSTEM water? ▼
No PFAS testing data is available for DUPLEX VILLAGE WATER SYSTEM under the EPA's UCMR5 monitoring program.
What water source does DUPLEX VILLAGE WATER SYSTEM use? ▼
DUPLEX VILLAGE WATER SYSTEM 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. This data is provided for informational purposes only.

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

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