Public Water System

MAJOR COUNTY RWD #1

PWSID OK2004407 · Oklahoma · 1,000 people served

Failing

MAJOR COUNTY RWD #1 is an EPA-regulated public water system in Oklahoma (PWSID OK2004407). It serves an estimated 1,000 residents — a rural community of customers — across 1 community across 1 ZIP code.

Over the past five years, MAJOR COUNTY RWD #1 has recorded 59 EPA health-based violations. The grade of F summarizes this compliance pattern. Specific contaminants, dates, and rule citations are listed in the violation history below.

Service Area

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Centered on the averaged ZIP-code centroid of 1 ZIP served.

Population

1,000

Cities

ZIPs

Violations

EPA Health-Based Violations

Health-based Maximum Contaminant Level (MCL) violations on file for MAJOR COUNTY RWD #1 over the past five years of EPA SDWIS reporting.

Mercury (Inorganic)chemical

EPA Code 1038 · Maximum Contaminant Level Exceedance

violations

EPA Limit

0.002 mg/L

Last Reading

11 MG/L

First Reported

Jan 2021

Most Recent

Jan 2025

What this violation means

Inorganic mercury in drinking water primarily damages kidneys. Most mercury exposure for Americans comes from fish (methylmercury), but localized water contamination occurs near refineries, coal-burning plants, and certain landfills.

Recommended precautions

→Reverse osmosis and distillation remove inorganic mercury.
→Activated carbon adsorption works for mercury but capacity is limited.
→Test private wells near industrial sites or landfills.

Read the complete guide to Mercury (Inorganic)

Leadchemical

EPA Code 5200 · Treatment Technique Violation

violations

EPA Limit

0.015 mg/L

Last Reading

—

First Reported

Oct 2024

Most Recent

Oct 2024

What this violation means

Lead is a potent neurotoxin with no safe exposure level. In drinking water it primarily enters via corroded lead service lines, lead-soldered copper pipes, and brass fixtures. Children under 6 and pregnant women face the highest risk because lead disrupts developing nervous and skeletal systems.

Recommended precautions

→Run cold tap water 30–120 seconds before drinking or cooking, especially after the tap has been unused for hours.
→Never cook with hot tap water — heat increases lead leaching from pipes.
→Use an NSF/ANSI 53 certified filter for lead removal (carbon block or reverse osmosis).
→If you have children, get blood lead levels tested by your pediatrician.

Read the complete guide to Lead

Source: EPA Safe Drinking Water Information System (SDWIS). Health-based violations only. Older violations may have been resolved; check your utility's most recent Consumer Confidence Report for current status.

Cities Served by MAJOR COUNTY RWD #1

FAIRVIEW

ZIP Codes Served

73737

About this system

EPA records this system as PWSID OK2004407. Data reflects the most recent EPA SDWIS publication as of 2026-05-18. Public Water System Identifiers (PWSIDs) are assigned by the EPA's Safe Drinking Water Act program to track every regulated water utility in the United States. The first two letters typically indicate the state primacy agency. For real-time water quality information, contact MAJOR COUNTY RWD #1 directly or review their annual Consumer Confidence Report (CCR).