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Community Water System · PWS OR4101449

Marshland Water Association

Clatskanie, Oregon 97016 - drinking water served from surface water sources to 70 people, tracked in EPA SDWIS and UCMR5.

70
People served
829
EPA violations
51
Health-based
Untested
UCMR5 result

The verdict

EPA records 829 drinking-water violations at Marshland Water Association, 6% of them health-based - above the Oregon per-system average.

829
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
70
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Marshland Water Association

Marshland Water Association is a private-owned community water system that delivers drinking water to 70 residents in Clatskanie, Oregon (Columbia County) through 29 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 829 total violations for this system , of which 51 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 732 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 182 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%).

Marshland Water Association's 829 violations sit above 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
70
Total Violations
829
Health-Based Violations
51
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
29
County
Columbia
School/Daycare
No
MCL Violations
44
Monitoring Violations
732
Treatment Tech Violations
7

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 182 2010
Surface Water Treatment Rule MR 87 2025
Arsenic MCL 18 2010
Nitrate MR 15 2008
Total Haloacetic Acids (HAA5) MCL 15 2024
Coliform (TCR) MCL 11 2009
Lead and Copper Rule MR 11 2023
Arsenic MR 10 2010
1,2-DIBROMO-3-CHLOROPROPANE MR 9 2011
Endrin MR 9 2011
Glyphosate MR 9 2011
Heptachlor epoxide MR 9 2011
Hexachlorocyclopentadiene MR 9 2011
Methoxychlor MR 9 2011
Simazine MR 9 2011
OXAMYL MR 9 2011
Toxaphene MR 9 2011
Diquat MR 9 2011
Di(2-ethylhexyl) adipate MR 9 2011
Atrazine MR 9 2011
LASSO MR 9 2011
HEXACHLOROBENZENE MR 9 2011
Benzo(a)pyrene MR 9 2011
Total Polychlorinated Biphenyls (PCB) MR 9 2011
ETHYLENE DIBROMIDE MR 9 2011
Chlordane MR 9 2011
BHC-GAMMA MR 9 2011
Di(2-ethylhexyl) phthalate MR 9 2011
Carbofuran MR 9 2011
Heptachlor MR 9 2011

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 Marshland Water Association.

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 OR4101449 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 Surface Water Treatment Rule MR 87 SDWIS / OR4101449 / 0200
2025 Public Notice Other 5 SDWIS / OR4101449 / 7500
2025 Consumer Confidence Rule Other 4 SDWIS / OR4101449 / 7000
2024 Total Haloacetic Acids (HAA5) MCL 15 SDWIS / OR4101449 / 2456
2023 Lead and Copper Rule MR 11 SDWIS / OR4101449 / 5000
2019 Total Haloacetic Acids (HAA5) MR 1 SDWIS / OR4101449 / 2456
2019 TTHM MR 1 SDWIS / OR4101449 / 2950
2011 1,2-DIBROMO-3-CHLOROPROPANE MR 9 SDWIS / OR4101449 / 2931
2011 Endrin MR 9 SDWIS / OR4101449 / 2005
2011 Glyphosate MR 9 SDWIS / OR4101449 / 2034
2011 Heptachlor epoxide MR 9 SDWIS / OR4101449 / 2067
2011 Hexachlorocyclopentadiene MR 9 SDWIS / OR4101449 / 2042
2011 Methoxychlor MR 9 SDWIS / OR4101449 / 2015
2011 Simazine MR 9 SDWIS / OR4101449 / 2037
2011 OXAMYL MR 9 SDWIS / OR4101449 / 2036

How Marshland Water Association Compares

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

Metric Marshland Water Association Oregon avg Federal benchmark
Total violations 829 82.1 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 51 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 70 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 Marshland Water Association water safe to drink? ▼
Marshland Water Association (PWS ID: OR4101449) has 829 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 70 people using Surface Water sources.
How many people does Marshland Water Association serve? ▼
Marshland Water Association serves 70 people in Clatskanie, Oregon. It is a Private-owned system using Surface Water water sources with 29 service connections.
What type of violations does Marshland Water Association have? ▼
Marshland Water Association has 829 total violations: 51 health-based violations (MCL exceedances or treatment failures), 732 monitoring/reporting violations, and 7 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Marshland Water Association water? ▼
No PFAS testing data is available for Marshland Water Association under the EPA's UCMR5 monitoring program.
What water source does Marshland Water Association use? ▼
Marshland Water Association uses Surface Water 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.
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.