D
46

Poor Water Quality

Westville, OK 74965

Adair County · Population served: 4,869 · Data updated March 2026

Water Systems Serving This Area

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ADAIR CO RWD #5
Surface water · Pop. 675
PWSID: OK1021770
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ADAIR CO RWD #3
Surface water · Pop. 2,598
PWSID: OK3000106
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WESTVILLE UTILITY AUTHORITY
Surface water · Pop. 1,596
PWSID: OK3000109

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
1.6
15 ppb 1 ppb Warning

Violation History (Last 5 Years)

179Total (5yr)
15Health-Based
157Major

Water Quality Summary

Understanding Your Water in Westville

Tap water quality in Westville, Oklahoma (74965) receives an overall grade of D (Poor) with a score of 46 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 13 points below the Oklahoma state average of 59. Compared to the national average (75), this area scores significantly lower. The area is served by 3 water systems providing water to approximately 4,869 people, using surface water sources. Testing has found elevated levels of Lead that warrant attention. Over the past 5 years, water systems here have accumulated 179 violations, including 15 health-based violations.

Your Score 46/100 D
vs State 13 pts below Oklahoma avg (59)
vs National 29 pts below national avg (75)

What a Grade D Means

A score of 46/100 signals poor water quality in Westville, OK. Significant issues have been identified, which may include multiple violations, contaminant levels near or above regulatory limits, or PFAS contamination. We recommend reviewing the detailed contaminant data below, considering a certified water filter, and checking your utility's Consumer Confidence Report for the latest information.

Surface water: sourced from rivers, lakes, or reservoirs

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

Tap water in Westville, Oklahoma receives a grade of D (Poor) with a score of 46/100. This indicates significant water quality concerns based on violation history, contaminant levels, or enforcement actions. We recommend reviewing the specific contaminants detected below and considering a certified water filter.

ZIP code 74965 is served by 3 water systems using surface water sources, providing water to approximately 4,869 people. Surface water systems are more susceptible to contamination from agricultural runoff, industrial discharge, and weather events, but typically undergo more extensive treatment including filtration and disinfection.

Lead was detected at 1.6 ppb in Westville, Oklahoma. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

No PFAS ("forever chemicals") were detected in water systems serving Westville, Oklahoma during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.

Water systems serving Westville, Oklahoma have received 179 violations in the last 5 years, including 15 health-based violations. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Based on detected contaminants (lead), residents in Westville, Oklahoma should consider: NSF/ANSI 53 certified filter — specifically rated for lead reduction. Pitcher filters (like Brita Longlast or PUR) and under-sink systems both work. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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