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ROYAL COACHMAN MOBIL EST

PWS ID: WA5374705 · Ferndale, Washington 98248

ROYAL COACHMAN MOBIL EST serves 37 people in Ferndale, Washington using Groundwater water sources. It has 128 recorded EPA violations, including 4 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: ROYAL COACHMAN MOBIL EST

ROYAL COACHMAN MOBIL EST is a private-owned community water system that delivers drinking water to 37 residents in Ferndale, Washington (Whatcom County) through 29 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 128 total violations for this system , of which 4 (3%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 117 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 9 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 Washington, EPA tracks 4,557 public water systems serving 9,736,844 people, with 314,648 cumulative violations and 20,590 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. ROYAL COACHMAN MOBIL EST's 128 violations sit above the Washington average. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%). 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
37
Total Violations
128
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
29
County
Whatcom
School/Daycare
No
MCL Violations
4
Monitoring Violations
117
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 9 2013
Consumer Confidence Rule Other 5 2019
Diquat MR 5 2005
Nitrate MR 4 2019
Coliform (TCR) MCL 4 1992
TTHM MR 3 2019
Total Haloacetic Acids (HAA5) MR 3 2019
Arsenic MR 3 2020
Lead and Copper Rule MR 2 2020
1,2,4-Trichlorobenzene MR 2 2020
DICHLOROMETHANE MR 2 2020
o-Dichlorobenzene MR 2 2020
p-Dichlorobenzene MR 2 2020
1,1-Dichloroethylene MR 2 2020
1,1,1-Trichloroethane MR 2 2020
Carbon tetrachloride MR 2 2020
1,2-Dichloropropane MR 2 2020
Trichloroethylene MR 2 2020
1,1,2-Trichloroethane MR 2 2020
Tetrachloroethylene MR 2 2020
Benzene MR 2 2020
Toluene MR 2 2020
Styrene MR 2 2020
Chromium MR 2 2020
CYANIDE MR 2 2020
Fluoride MR 2 2020
Mercury MR 2 2020
Nickel MR 2 2020
Antimony, Total MR 2 2020
Beryllium, Total MR 2 2020

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 ROYAL COACHMAN MOBIL EST.

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 WA5374705 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Washington Drinking Water Authority

Washington State Department of Health — Office of Drinking Water is the primacy agency that licenses and inspects ROYAL COACHMAN MOBIL EST under EPA-delegated authority.

Open WA regulator portal

Source: Washington State Department of Health — Office of Drinking Water

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 / WA5374705 / 8000
2020 Arsenic MR 3 SDWIS / WA5374705 / 1005
2020 Lead and Copper Rule MR 2 SDWIS / WA5374705 / 5000
2020 1,2,4-Trichlorobenzene MR 2 SDWIS / WA5374705 / 2378
2020 DICHLOROMETHANE MR 2 SDWIS / WA5374705 / 2964
2020 o-Dichlorobenzene MR 2 SDWIS / WA5374705 / 2968
2020 p-Dichlorobenzene MR 2 SDWIS / WA5374705 / 2969
2020 1,1-Dichloroethylene MR 2 SDWIS / WA5374705 / 2977
2020 1,1,1-Trichloroethane MR 2 SDWIS / WA5374705 / 2981
2020 Carbon tetrachloride MR 2 SDWIS / WA5374705 / 2982
2020 1,2-Dichloropropane MR 2 SDWIS / WA5374705 / 2983
2020 Trichloroethylene MR 2 SDWIS / WA5374705 / 2984
2020 1,1,2-Trichloroethane MR 2 SDWIS / WA5374705 / 2985
2020 Tetrachloroethylene MR 2 SDWIS / WA5374705 / 2987
2020 Benzene MR 2 SDWIS / WA5374705 / 2990

How ROYAL COACHMAN MOBIL EST Compares

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

Metric ROYAL COACHMAN MOBIL EST Washington avg Federal benchmark
Total violations 128 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 4 4.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 39.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 37 2,137 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,557 regulated public water systems in Washington.

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 ROYAL COACHMAN MOBIL EST water safe to drink? ▼
ROYAL COACHMAN MOBIL EST (PWS ID: WA5374705) has 128 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 37 people using Groundwater sources.
How many people does ROYAL COACHMAN MOBIL EST serve? ▼
ROYAL COACHMAN MOBIL EST serves 37 people in Ferndale, Washington. It is a Private-owned system using Groundwater water sources with 29 service connections.
What type of violations does ROYAL COACHMAN MOBIL EST have? ▼
ROYAL COACHMAN MOBIL EST has 128 total violations: 4 health-based violations (MCL exceedances or treatment failures), 117 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in ROYAL COACHMAN MOBIL EST water? ▼
No PFAS testing data is available for ROYAL COACHMAN MOBIL EST under the EPA's UCMR5 monitoring program.
What water source does ROYAL COACHMAN MOBIL EST use? ▼
ROYAL COACHMAN MOBIL EST 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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