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Shady Grove, OK Tap Water Quality 2026

Water quality report for Shady Grove, OK — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Shady Grove's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Cherokee Co. Rwd #11 PWSID: OK1221637 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.10 ppb, 7% of the action level and no violations are open. PFAS was sampled but not enough times for a compliance determination.

B

Shady Grove earns a B for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 1.10 ppb — 7% of the federal action level
PFAS sampled, too few results to judge
4 violations since 2015, 0 health-based
No violations currently open
Shady Grove's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.10 ppb — 7% of the federal action level
✓ Lower lead than 81% of Oklahoma utilities
Population Served
493
~1593 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
4 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
7% of EPA action level
1.10 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.10 ppb, 7% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

4 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Cherokee Co. Rwd #11
PWSID OK1221637
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 493
Service connections 1,593
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Shady Grove tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.10 ppb, 7% of the action level.
Does Shady Grove water have PFAS? ▼
It was sampled, but no sampling point had enough results for a compliance determination.
Who supplies water to Shady Grove? ▼
Cherokee Co. Rwd #11 (PWSID OK1221637), one of 2 systems serving this area. Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2025-07-22. No significant deficiencies were recorded.

What Should Shady Grove Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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