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TERRAND MOBILE TERRACE

PWS ID: OR4101157 · HAPPY VALLEY, Oregon 97086

TERRAND MOBILE TERRACE serves 71 people in HAPPY VALLEY, Oregon using Groundwater water sources. It has 272 recorded EPA violations, including 1 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: TERRAND MOBILE TERRACE

TERRAND MOBILE TERRACE is a private-owned community water system that delivers drinking water to 71 residents in HAPPY VALLEY, Oregon (Multnomah County) through 40 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 272 total violations for this system , of which 1 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 267 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 19 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. TERRAND MOBILE TERRACE's 272 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
71
Total Violations
272
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
40
County
Multnomah
School/Daycare
No
MCL Violations
1
Monitoring Violations
267
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 19 2009
1,2-DIBROMO-3-CHLOROPROPANE MR 6 2020
Diquat MR 5 2005
Toxaphene MR 5 2005
BHC-GAMMA MR 5 2005
Benzo(a)pyrene MR 5 2005
Chlordane MR 5 2005
Endothall MR 4 2005
ETHYLENE DIBROMIDE MR 4 2005
Glyphosate MR 4 2005
Heptachlor epoxide MR 4 2005
Heptachlor MR 4 2005
HEXACHLOROBENZENE MR 4 2005
Methoxychlor MR 4 2005
Pentachlorophenol MR 4 2005
Simazine MR 4 2005
Total Polychlorinated Biphenyls (PCB) MR 4 2005
OXAMYL MR 4 2005
1,1-Dichloroethylene MR 4 2005
1,1,2-Trichloroethane MR 4 2005
Benzene MR 4 2005
cis-1,2-Dichloroethylene MR 4 2005
DICHLOROMETHANE MR 4 2005
Ethylbenzene MR 4 2005
o-Dichlorobenzene MR 4 2005
Styrene MR 4 2005
trans-1,2-Dichloroethylene MR 4 2005
Xylenes, Total MR 4 2005
Arsenic MR 4 2002
Dalapon MR 4 2005

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 TERRAND MOBILE TERRACE.

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 OR4101157 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
2024 Consumer Confidence Rule Other 1 SDWIS / OR4101157 / 7000
2020 1,2-DIBROMO-3-CHLOROPROPANE MR 6 SDWIS / OR4101157 / 2931
2020 E. COLI MR 1 SDWIS / OR4101157 / 3014
2017 Combined Radium (-226 and -228) MR 2 SDWIS / OR4101157 / 4010
2009 Coliform (TCR) MR 19 SDWIS / OR4101157 / 3100
2005 Diquat MR 5 SDWIS / OR4101157 / 2032
2005 Toxaphene MR 5 SDWIS / OR4101157 / 2020
2005 BHC-GAMMA MR 5 SDWIS / OR4101157 / 2010
2005 Benzo(a)pyrene MR 5 SDWIS / OR4101157 / 2306
2005 Chlordane MR 5 SDWIS / OR4101157 / 2959
2005 Endothall MR 4 SDWIS / OR4101157 / 2033
2005 ETHYLENE DIBROMIDE MR 4 SDWIS / OR4101157 / 2946
2005 Glyphosate MR 4 SDWIS / OR4101157 / 2034
2005 Heptachlor epoxide MR 4 SDWIS / OR4101157 / 2067
2005 Heptachlor MR 4 SDWIS / OR4101157 / 2065

How TERRAND MOBILE TERRACE Compares

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

Metric TERRAND MOBILE TERRACE Oregon avg Federal benchmark
Total violations 272 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 71 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 TERRAND MOBILE TERRACE water safe to drink? ▼
TERRAND MOBILE TERRACE (PWS ID: OR4101157) has 272 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 71 people using Groundwater sources.
How many people does TERRAND MOBILE TERRACE serve? ▼
TERRAND MOBILE TERRACE serves 71 people in HAPPY VALLEY, Oregon. It is a Private-owned system using Groundwater water sources with 40 service connections.
What type of violations does TERRAND MOBILE TERRACE have? ▼
TERRAND MOBILE TERRACE has 272 total violations: 1 health-based violations (MCL exceedances or treatment failures), 267 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in TERRAND MOBILE TERRACE water? ▼
No PFAS testing data is available for TERRAND MOBILE TERRACE under the EPA's UCMR5 monitoring program.
What water source does TERRAND MOBILE TERRACE use? ▼
TERRAND MOBILE TERRACE uses Groundwater 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.

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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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