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MERIDIAN WATER SYSTEM

PWS ID: WA5353820 · Arlington, Washington 98223

MERIDIAN WATER SYSTEM serves 81 people in Arlington, Washington using Groundwater water sources. It has 184 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MERIDIAN WATER SYSTEM

MERIDIAN WATER SYSTEM is a private-owned community water system that delivers drinking water to 81 residents in Arlington, Washington (Snohomish County) through 29 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 184 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 174 monitoring and reporting violations are on file. The most recent violation on record dates to 2005.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 13 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. MERIDIAN WATER SYSTEM's 184 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
81
Total Violations
184
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
29
County
Snohomish
School/Daycare
No
MCL Violations
0
Monitoring Violations
174
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 13 2004
Pentachlorophenol MR 8 2005
Endrin MR 6 2005
Methoxychlor MR 6 2005
Toxaphene MR 6 2005
Simazine MR 6 2005
Hexachlorocyclopentadiene MR 6 2005
Atrazine MR 6 2005
HEXACHLOROBENZENE MR 6 2005
Benzo(a)pyrene MR 6 2005
Chlordane MR 6 2005
Aldicarb sulfoxide MR 6 2005
Aldicarb sulfone MR 6 2005
OXAMYL MR 6 2005
Carbofuran MR 6 2005
Di(2-ethylhexyl) phthalate MR 6 2005
Picloram MR 6 2005
Di(2-ethylhexyl) adipate MR 6 2005
Heptachlor epoxide MR 6 2005
Aldicarb MR 6 2005
Heptachlor MR 6 2005
Dinoseb MR 6 2005
BHC-GAMMA MR 6 2005
2,4,5-TP MR 6 2005
LASSO MR 6 2005
Dalapon MR 6 2005
Gross Alpha, Excl. Radon and U MR 1 1979
Nitrate MR 1 1979
Arsenic MR 1 1979
Cadmium MR 1 1979

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 MERIDIAN WATER SYSTEM.

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 WA5353820 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 MERIDIAN WATER SYSTEM 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
2005 Pentachlorophenol MR 8 SDWIS / WA5353820 / 2326
2005 Endrin MR 6 SDWIS / WA5353820 / 2005
2005 Methoxychlor MR 6 SDWIS / WA5353820 / 2015
2005 Toxaphene MR 6 SDWIS / WA5353820 / 2020
2005 Simazine MR 6 SDWIS / WA5353820 / 2037
2005 Hexachlorocyclopentadiene MR 6 SDWIS / WA5353820 / 2042
2005 Atrazine MR 6 SDWIS / WA5353820 / 2050
2005 HEXACHLOROBENZENE MR 6 SDWIS / WA5353820 / 2274
2005 Benzo(a)pyrene MR 6 SDWIS / WA5353820 / 2306
2005 Chlordane MR 6 SDWIS / WA5353820 / 2959
2005 Aldicarb sulfoxide MR 6 SDWIS / WA5353820 / 2043
2005 Aldicarb sulfone MR 6 SDWIS / WA5353820 / 2044
2005 OXAMYL MR 6 SDWIS / WA5353820 / 2036
2005 Carbofuran MR 6 SDWIS / WA5353820 / 2046
2005 Di(2-ethylhexyl) phthalate MR 6 SDWIS / WA5353820 / 2039

How MERIDIAN WATER SYSTEM Compares

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

Metric MERIDIAN WATER SYSTEM Washington avg Federal benchmark
Total violations 184 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 81 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 MERIDIAN WATER SYSTEM water safe to drink? ▼
MERIDIAN WATER SYSTEM (PWS ID: WA5353820) has 184 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 81 people using Groundwater sources.
How many people does MERIDIAN WATER SYSTEM serve? ▼
MERIDIAN WATER SYSTEM serves 81 people in Arlington, Washington. It is a Private-owned system using Groundwater water sources with 29 service connections.
What type of violations does MERIDIAN WATER SYSTEM have? ▼
MERIDIAN WATER SYSTEM has 184 total violations: 0 health-based violations (MCL exceedances or treatment failures), 174 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MERIDIAN WATER SYSTEM water? ▼
No PFAS testing data is available for MERIDIAN WATER SYSTEM under the EPA's UCMR5 monitoring program.
What water source does MERIDIAN WATER SYSTEM use? ▼
MERIDIAN WATER SYSTEM 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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