B71/100
Fort Sill Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 23,000 residents · Oklahoma
What's In Fort Sill's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
2
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 746.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2006.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
FORT SILL HQUSAFACFS
Population Served
23,000
Water Source
Purchased Surface Water
System ID
OK3001601
Frequently Asked Questions About Fort Sill Water
Is Fort Sill tap water safe to drink?
Fort Sill, Oklahoma tap water receives a grade of B (71/100), which is considered good. Out of 69 contaminants tested, none exceed EPA maximum contaminant levels (MCLs) and 2 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Fort Sill's water?
Of the 69 contaminants tested in Fort Sill's water supply, the most notable include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Fort Sill have any water quality violations?
Yes, Fort Sill has 7 EPA violation(s) on record, with the most recent in 2006. Violation types include MCL, MR. 4 of these are health-based violations, which are the most serious category.
Do I need a water filter in Fort Sill?
Fort Sill water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 2 contaminant(s) exceed these stricter goals.
Where does Fort Sill's tap water come from?
Fort Sill's drinking water is sourced from purchased surface water and supplied by FORT SILL HQUSAFACFS. The system serves approximately 23,000 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Fort Sill's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Fort Sill's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Fort Sill's water compare to other cities in Oklahoma?
Fort Sill's water quality score of 71/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Oklahoma state page to see how all cities in the state compare.
What should I do if I'm concerned about Fort Sill's water quality?
If you have concerns about Fort Sill's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (FORT SILL HQUSAFACFS) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.