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States → Oregon

Non-Transient Non-Community Water System · PWS OR4191712

Seven Oak Middle School

Lebanon, Oregon 97355 - drinking water served from groundwater sources to 722 people, tracked in EPA SDWIS and UCMR5.

722
People served
45
EPA violations
15
Health-based
Untested
UCMR5 result

The verdict

EPA records 45 drinking-water violations at Seven Oak Middle School, 33% of them health-based - below the Oregon per-system average.

45
Total EPA violations on record
33%
Health-based (MCL / treatment failure)
722
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Seven Oak Middle School

Seven Oak Middle School is a local-owned non-transient non-community water system that delivers drinking water to 722 residents in Lebanon, Oregon (Linn County) through 2 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 45 total violations for this system , of which 15 (33%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 27 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 Lead and Copper Rule, recorded in 21 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. Statewide, 30 of 125 UCMR5-tested systems have reported PFAS detections (24%).

Seven Oak Middle School's 45 violations sit below the Oregon average.

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
722
Total Violations
45
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
2
County
Linn
School/Daycare
Yes
MCL Violations
2
Monitoring Violations
27
Treatment Tech Violations
13

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 21 2025
Lead and Copper Rule TT 13 2022
Coliform (TCR) MR 4 2002
Coliform (TCR) MCL 2 2002
Revised Total Coliform Rule MON 1 2022
Public Notice Other 1 2022
Nitrate MR 1 1993

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 Seven Oak Middle School.

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 OR4191712 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 Lead and Copper Rule MR 21 SDWIS / OR4191712 / 5000
2022 Lead and Copper Rule TT 13 SDWIS / OR4191712 / 5000
2022 Revised Total Coliform Rule MON 1 SDWIS / OR4191712 / 8000
2022 Public Notice Other 1 SDWIS / OR4191712 / 7500
2002 Coliform (TCR) MR 4 SDWIS / OR4191712 / 3100
2002 Coliform (TCR) MCL 2 SDWIS / OR4191712 / 3100
1993 Nitrate MR 1 SDWIS / OR4191712 / 1040

How Seven Oak Middle School Compares

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

Metric Seven Oak Middle School Oregon avg Federal benchmark
Total violations 45 82.1 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 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 722 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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Seven Oak Middle School water safe to drink? ▼
Seven Oak Middle School (PWS ID: OR4191712) has 45 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 722 people using Groundwater sources.
How many people does Seven Oak Middle School serve? ▼
Seven Oak Middle School serves 722 people in Lebanon, Oregon. It is a Local-owned system using Groundwater water sources with 2 service connections.
What type of violations does Seven Oak Middle School have? ▼
Seven Oak Middle School has 45 total violations: 15 health-based violations (MCL exceedances or treatment failures), 27 monitoring/reporting violations, and 13 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Seven Oak Middle School water? ▼
No PFAS testing data is available for Seven Oak Middle School under the EPA's UCMR5 monitoring program.
What water source does Seven Oak Middle School use? ▼
Seven Oak Middle School uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.
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.

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 system's figures are rendered directly from 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.