Community Water System · PWS OR4101139
Midland Water Association
Clatskanie, Oregon 97016 - drinking water served from surface water sources to 160 people, tracked in EPA SDWIS and UCMR5.
- 160
- People served
- 444
- EPA violations
- 70
- Health-based
- Untested
- UCMR5 result
The verdict
EPA records 444 drinking-water violations at Midland Water Association, 16% of them health-based - above the Oregon per-system average.
- 444
- Total EPA violations on record
- 16%
- Health-based (MCL / treatment failure)
- 160
- People served by this system
- N/A
- PFAS compounds detected (UCMR5)
Water Quality Snapshot: Midland Water Association
Midland Water Association is a local-owned community water system that delivers drinking water to 160 residents in Clatskanie, Oregon (Columbia County) through 72 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 444 total violations for this system , of which 70 (16%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 356 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 Surface Water Treatment Rule, recorded in 126 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%).
Midland Water Association's 444 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.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 72
- County
- Columbia
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 356
- Treatment Tech Violations
- 67
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 126 | 2024 |
| Interim Enhanced Surface Water Treatment Rule | MR | 62 | 2024 |
| Interim Enhanced Surface Water Treatment Rule | TT | 38 | 2025 |
| Revised Total Coliform Rule | MON | 27 | 2025 |
| Surface Water Treatment Rule | TT | 21 | 2020 |
| Coliform (TCR) | MR | 15 | 2015 |
| TTHM | MR | 13 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 12 | 2024 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 7 | 2022 |
| Nitrate | MR | 6 | 2021 |
| 1,2,4-Trichlorobenzene | MR | 4 | 2021 |
| cis-1,2-Dichloroethylene | MR | 4 | 2021 |
| o-Dichlorobenzene | MR | 4 | 2021 |
| p-Dichlorobenzene | MR | 4 | 2021 |
| 1,1-Dichloroethylene | MR | 4 | 2021 |
| trans-1,2-Dichloroethylene | MR | 4 | 2021 |
| 1,2-Dichloroethane | MR | 4 | 2021 |
| 1,1,1-Trichloroethane | MR | 4 | 2021 |
| Carbon tetrachloride | MR | 4 | 2021 |
| 1,2-Dichloropropane | MR | 4 | 2021 |
| Trichloroethylene | MR | 4 | 2021 |
| 1,1,2-Trichloroethane | MR | 4 | 2021 |
| Tetrachloroethylene | MR | 4 | 2021 |
| CHLOROBENZENE | MR | 4 | 2021 |
| Toluene | MR | 4 | 2021 |
| Public Notice | Other | 4 | 2020 |
| DICHLOROMETHANE | MR | 4 | 2021 |
| Benzene | MR | 4 | 2021 |
| Ethylbenzene | MR | 4 | 2021 |
| Styrene | MR | 4 | 2021 |
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 Midland Water Association.
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 OR4101139 on SDWISSource: EPA SDWIS Federal Reports Search
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 SDWISViolation 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 | Interim Enhanced Surface Water Treatment Rule | TT | 38 | SDWIS / OR4101139 / 0300 |
| 2025 | Revised Total Coliform Rule | MON | 27 | SDWIS / OR4101139 / 8000 |
| 2025 | Consumer Confidence Rule | Other | 3 | SDWIS / OR4101139 / 7000 |
| 2024 | Surface Water Treatment Rule | MR | 126 | SDWIS / OR4101139 / 0200 |
| 2024 | Interim Enhanced Surface Water Treatment Rule | MR | 62 | SDWIS / OR4101139 / 0300 |
| 2024 | TTHM | MR | 13 | SDWIS / OR4101139 / 2950 |
| 2024 | Total Haloacetic Acids (HAA5) | MR | 12 | SDWIS / OR4101139 / 2456 |
| 2023 | Revised Total Coliform Rule | TT | 1 | SDWIS / OR4101139 / 8000 |
| 2022 | Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 7 | SDWIS / OR4101139 / 0400 |
| 2021 | Nitrate | MR | 6 | SDWIS / OR4101139 / 1040 |
| 2021 | 1,2,4-Trichlorobenzene | MR | 4 | SDWIS / OR4101139 / 2378 |
| 2021 | cis-1,2-Dichloroethylene | MR | 4 | SDWIS / OR4101139 / 2380 |
| 2021 | o-Dichlorobenzene | MR | 4 | SDWIS / OR4101139 / 2968 |
| 2021 | p-Dichlorobenzene | MR | 4 | SDWIS / OR4101139 / 2969 |
| 2021 | 1,1-Dichloroethylene | MR | 4 | SDWIS / OR4101139 / 2977 |
How Midland Water Association Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | Midland Water Association | Oregon avg | Federal benchmark |
|---|---|---|---|
| Total violations | 444 | 82.1 | SDWA compliance, any non-zero count is a recorded breach |
| Health-based violations | 70 | 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 | 160 | 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 Midland Water Association water safe to drink? ▼
How many people does Midland Water Association serve? ▼
What type of violations does Midland Water Association have? ▼
Has PFAS been detected in Midland Water Association water? ▼
What water source does Midland Water Association use? ▼
Where does this data come from? ▼
Read our methodology - how this data is sourced, computed, and verified.
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.