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COOKS IN-LIEU TFAS

PWS ID: 105338113 · PORTLAND, 10 97232-4169

COOKS IN-LIEU TFAS serves 70 people in PORTLAND, 10 using Groundwater water sources. It has 398 recorded EPA violations, including 7 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: COOKS IN-LIEU TFAS

COOKS IN-LIEU TFAS is a federal-owned non-transient non-community water system that delivers drinking water to 70 residents in PORTLAND, 10 through 5 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 398 total violations for this system , of which 7 (2%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 389 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 2,3,7,8-TCDD, 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 10, EPA tracks 158 public water systems serving 142,574 people, with 31,953 cumulative violations and 1,055 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 202.2 violations. COOKS IN-LIEU TFAS's 398 violations sit above the 10 average. Statewide, 2 of 10 UCMR5-tested systems have reported PFAS detections (20%). 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
70
Total Violations
398
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Federal
Connections
5
School/Daycare
No
MCL Violations
3
Monitoring Violations
389
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
2,3,7,8-TCDD MR 10 2021
Revised Total Coliform Rule MON 10 2025
2,4-D MR 8 2020
2,4,5-TP MR 8 2020
HEXACHLOROBENZENE MR 8 2020
Benzo(a)pyrene MR 8 2020
Pentachlorophenol MR 8 2020
Chlordane MR 8 2020
Toxaphene MR 8 2020
Dalapon MR 8 2020
Diquat MR 8 2020
Endothall MR 8 2020
Glyphosate MR 8 2020
Di(2-ethylhexyl) adipate MR 8 2020
OXAMYL MR 8 2020
Di(2-ethylhexyl) phthalate MR 8 2020
Picloram MR 8 2020
Dinoseb MR 8 2020
Hexachlorocyclopentadiene MR 8 2020
Carbofuran MR 8 2020
Atrazine MR 8 2020
Simazine MR 8 2020
BHC-GAMMA MR 8 2020
Methoxychlor MR 8 2020
LASSO MR 8 2020
Heptachlor epoxide MR 8 2020
Total Polychlorinated Biphenyls (PCB) MR 8 2020
Heptachlor MR 8 2020
Endrin MR 8 2020
ETHYLENE DIBROMIDE MR 7 2019

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 COOKS IN-LIEU TFAS.

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 105338113 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

10 Drinking Water Authority

10'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 10 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 Revised Total Coliform Rule MON 10 SDWIS / 105338113 / 8000
2023 Revised Total Coliform Rule RPT 2 SDWIS / 105338113 / 8000
2021 2,3,7,8-TCDD MR 10 SDWIS / 105338113 / 2063
2020 2,4-D MR 8 SDWIS / 105338113 / 2105
2020 2,4,5-TP MR 8 SDWIS / 105338113 / 2110
2020 HEXACHLOROBENZENE MR 8 SDWIS / 105338113 / 2274
2020 Benzo(a)pyrene MR 8 SDWIS / 105338113 / 2306
2020 Pentachlorophenol MR 8 SDWIS / 105338113 / 2326
2020 Chlordane MR 8 SDWIS / 105338113 / 2959
2020 Toxaphene MR 8 SDWIS / 105338113 / 2020
2020 Dalapon MR 8 SDWIS / 105338113 / 2031
2020 Diquat MR 8 SDWIS / 105338113 / 2032
2020 Endothall MR 8 SDWIS / 105338113 / 2033
2020 Glyphosate MR 8 SDWIS / 105338113 / 2034
2020 Di(2-ethylhexyl) adipate MR 8 SDWIS / 105338113 / 2035

How COOKS IN-LIEU TFAS Compares

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

Metric COOKS IN-LIEU TFAS 10 avg Federal benchmark
Total violations 398 202.2 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 7 6.7 Indicates a contaminant exceeded a federal MCL
PFAS detection None 20% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 70 902 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 158 regulated public water systems in 10.

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 COOKS IN-LIEU TFAS water safe to drink? ▼
COOKS IN-LIEU TFAS (PWS ID: 105338113) has 398 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 70 people using Groundwater sources.
How many people does COOKS IN-LIEU TFAS serve? ▼
COOKS IN-LIEU TFAS serves 70 people in PORTLAND, 10. It is a Federal-owned system using Groundwater water sources with 5 service connections.
What type of violations does COOKS IN-LIEU TFAS have? ▼
COOKS IN-LIEU TFAS has 398 total violations: 7 health-based violations (MCL exceedances or treatment failures), 389 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in COOKS IN-LIEU TFAS water? ▼
No PFAS testing data is available for COOKS IN-LIEU TFAS under the EPA's UCMR5 monitoring program.
What water source does COOKS IN-LIEU TFAS use? ▼
COOKS IN-LIEU TFAS 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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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial