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STAFFORD ELEMENTARY

PWS ID: OR4193701 · TUALATIN, Oregon 97062

STAFFORD ELEMENTARY serves 600 people in TUALATIN, Oregon using Groundwater water sources. It has 83 recorded EPA violations, including 1 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: STAFFORD ELEMENTARY

STAFFORD ELEMENTARY is a local-owned non-transient non-community water system that delivers drinking water to 600 residents in TUALATIN, Oregon (Clackamas County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 83 total violations for this system , of which 1 (1%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 82 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 10 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. STAFFORD ELEMENTARY's 83 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
600
Total Violations
83
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Clackamas
School/Daycare
Yes
MCL Violations
1
Monitoring Violations
82
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 10 2008
Lead and Copper Rule MR 9 2018
Nitrate MR 3 2007
Toxaphene MR 2 2020
OXAMYL MR 2 2020
Carbofuran MR 2 2020
Total Polychlorinated Biphenyls (PCB) MR 2 2020
ETHYLENE DIBROMIDE MR 2 2020
Chlordane MR 2 2020
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2020
Arsenic MR 1 2002
1,2,4-Trichlorobenzene MR 1 2002
o-Dichlorobenzene MR 1 2002
p-Dichlorobenzene MR 1 2002
trans-1,2-Dichloroethylene MR 1 2002
1,2-Dichloroethane MR 1 2002
1,1,1-Trichloroethane MR 1 2002
Carbon tetrachloride MR 1 2002
Trichloroethylene MR 1 2002
1,1,2-Trichloroethane MR 1 2002
Benzene MR 1 2002
Toluene MR 1 2002
Ethylbenzene MR 1 2002
Styrene MR 1 2002
Endrin MR 1 2002
Dalapon MR 1 2002
Diquat MR 1 2002
Glyphosate MR 1 2002
Di(2-ethylhexyl) adipate MR 1 2002
Picloram 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 STAFFORD ELEMENTARY.

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 OR4193701 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
2022 Revised Total Coliform Rule MON 1 SDWIS / OR4193701 / 8000
2022 COLIPHAGE MR 1 SDWIS / OR4193701 / 3028
2020 Toxaphene MR 2 SDWIS / OR4193701 / 2020
2020 OXAMYL MR 2 SDWIS / OR4193701 / 2036
2020 Carbofuran MR 2 SDWIS / OR4193701 / 2046
2020 Total Polychlorinated Biphenyls (PCB) MR 2 SDWIS / OR4193701 / 2383
2020 ETHYLENE DIBROMIDE MR 2 SDWIS / OR4193701 / 2946
2020 Chlordane MR 2 SDWIS / OR4193701 / 2959
2020 1,2-DIBROMO-3-CHLOROPROPANE MR 2 SDWIS / OR4193701 / 2931
2018 Lead and Copper Rule MR 9 SDWIS / OR4193701 / 5000
2008 Coliform (TCR) MR 10 SDWIS / OR4193701 / 3100
2008 Coliform (TCR) MCL 1 SDWIS / OR4193701 / 3100
2007 Nitrate MR 3 SDWIS / OR4193701 / 1040
2002 Arsenic MR 1 SDWIS / OR4193701 / 1005
2002 1,2,4-Trichlorobenzene MR 1 SDWIS / OR4193701 / 2378

How STAFFORD ELEMENTARY Compares

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

Metric STAFFORD ELEMENTARY Oregon avg Federal benchmark
Total violations 83 82.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 1 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 600 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 STAFFORD ELEMENTARY water safe to drink? ▼
STAFFORD ELEMENTARY (PWS ID: OR4193701) has 83 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 600 people using Groundwater sources.
How many people does STAFFORD ELEMENTARY serve? ▼
STAFFORD ELEMENTARY serves 600 people in TUALATIN, Oregon. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does STAFFORD ELEMENTARY have? ▼
STAFFORD ELEMENTARY has 83 total violations: 1 health-based violations (MCL exceedances or treatment failures), 82 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in STAFFORD ELEMENTARY water? ▼
No PFAS testing data is available for STAFFORD ELEMENTARY under the EPA's UCMR5 monitoring program.
What water source does STAFFORD ELEMENTARY use? ▼
STAFFORD ELEMENTARY 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.

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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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