D
50

Poor Water Quality

Union City, OK 73090

Canadian County · Population served: 618 · Data updated March 2026

Water Systems Serving This Area

🏔
UNION CITY
Surface water · Pop. 618
PWSID: OK3000909

Violation History (Last 5 Years)

65Total (5yr)
56Health-Based
5Major

Water Quality Summary

Understanding Your Water in Union City

Tap water quality in Union City, Oklahoma (73090) receives an overall grade of D (Poor) with a score of 50 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 9 points below the Oklahoma state average of 59. Compared to the national average (75), this area scores significantly lower. The area is served by Union City, a surface water system providing water to approximately 618 people. Over the past 5 years, water systems here have accumulated 65 violations, including 56 health-based violations.

Your Score 50/100 D
vs State 9 pts below Oklahoma avg (59)
vs National 25 pts below national avg (75)

What a Grade D Means

A score of 50/100 signals poor water quality in Union City, 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

Common Questions

Frequently Asked Questions

Tap water in Union City, Oklahoma receives a grade of D (Poor) with a score of 50/100. 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 73090 is served by 1 water system using surface water sources, providing water to approximately 618 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.

No lead data is currently available for ZIP code 73090. This may mean lead testing results haven't been reported recently, or the serving water system uses monitoring waivers. You can request a free lead test kit from most water utilities or purchase a certified home testing kit.

No PFAS ("forever chemicals") were detected in water systems serving Union City, 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 Union City, Oklahoma have received 65 violations in the last 5 years, including 56 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.

Water in Union City, Oklahoma shows no major contaminant concerns based on available data. A basic carbon filter can improve taste and reduce chlorine. For extra peace of mind, an NSF-certified pitcher filter or faucet-mount filter provides an affordable layer of protection.

Explore Nearby

Water Quality in Nearby ZIP Codes