States ›Oklahoma ›Osage County ›Whippoorwill

Whippoorwill, OK Tap Water Quality 2026

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

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

Main Utility: Osage Co Rwd #20 (hulah) PWSID: OK1021410 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 3.70 ppb, 25% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Whippoorwill earns a C for water quality

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

Lead: 3.70 ppb — 25% of the federal action level
PFAS never sampled at this system
127 violations since 2015, 110 health-based
No violations currently open
Whippoorwill's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 3.70 ppb — 25% of the federal action level
✓ Lower lead than 23% of Oklahoma utilities
Population Served
75
~131 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
127 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
25% of EPA action level
3.70 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
108.5% of EPA action level
1,410 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 3.70 ppb, 25% 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. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
TTHM MONITORING AND REPORTING — 0.080 mg/L 2025 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Resolved
Consumer Confidence Rule OTHER — — 2025 Unaddressed
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.13 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.133 MG/L 0.080 mg/L 2025 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2025 Archived
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.116 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.118 MG/L 0.080 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.118 MG/L 0.060 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.122 MG/L 0.080 mg/L 2025 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.094 MG/L 0.060 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.109 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.102 MG/L 0.080 mg/L 2024 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2024 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2024 Resolved
TTHM MCL EXCEEDANCE 0.107 MG/L 0.080 mg/L 2024 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
TTHM MCL EXCEEDANCE 0.107 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.107 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.096 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.118 MG/L 0.080 mg/L 2023 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.129 MG/L 0.060 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.179 MG/L 0.080 mg/L 2023 Archived
CARBON, TOTAL TREATMENT TECHNIQUE 0.06 RATIO TT 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.156 MG/L 0.060 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.188 MG/L 0.080 mg/L 2022 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.207 MG/L 0.060 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.224 MG/L 0.080 mg/L 2022 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.21 MG/L 0.060 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.224 MG/L 0.080 mg/L 2022 Archived
CARBON, TOTAL TREATMENT TECHNIQUE 0.49 RATIO TT 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.181 MG/L 0.060 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.221 MG/L 0.080 mg/L 2022 Archived
CARBON, TOTAL TREATMENT TECHNIQUE 0.37 RATIO TT 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.231 MG/L 0.060 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.23 MG/L 0.080 mg/L 2021 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.248 MG/L 0.060 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.233 MG/L 0.080 mg/L 2021 Archived
CARBON, TOTAL TREATMENT TECHNIQUE 0.45 RATIO TT 2021 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.355 MG/L 0.060 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.272 MG/L 0.080 mg/L 2021 Archived
CARBON, TOTAL TREATMENT TECHNIQUE 0.24 RATIO TT 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.383 MG/L 0.060 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.283 MG/L 0.080 mg/L 2021 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.354 MG/L 0.060 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.287 MG/L 0.080 mg/L 2020 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2020 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.287 MG/L 0.060 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.237 MG/L 0.080 mg/L 2020 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2020 Resolved
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2020 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.205 MG/L 0.060 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.203 MG/L 0.080 mg/L 2020 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.099 MG/L 0.060 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.174 MG/L 0.080 mg/L 2020 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2020 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.097 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.172 MG/L 0.080 mg/L 2019 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.145 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.211 MG/L 0.080 mg/L 2019 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2019 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.118 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.225 MG/L 0.080 mg/L 2019 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.104 MG/L 0.060 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.2 MG/L 0.080 mg/L 2019 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.103 MG/L 0.060 mg/L 2018 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.084 MG/L 0.060 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.217 MG/L 0.080 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.222 MG/L 0.080 mg/L 2018 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.146 MG/L 0.060 mg/L 2018 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.147 MG/L 0.060 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.242 MG/L 0.080 mg/L 2018 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.128 MG/L 0.060 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.214 MG/L 0.080 mg/L 2017 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.125 MG/L 0.060 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.188 MG/L 0.080 mg/L 2017 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.085 MG/L 0.060 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.151 MG/L 0.080 mg/L 2017 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.134 MG/L 0.060 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.179 MG/L 0.080 mg/L 2017 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.26 MG/L 0.060 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.29 MG/L 0.080 mg/L 2016 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Revised Total Coliform Rule MCL EXCEEDANCE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.242 MG/L 0.060 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.314 MG/L 0.080 mg/L 2016 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
TTHM MCL EXCEEDANCE 0.356 MG/L 0.080 mg/L 2016 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.216 MG/L 0.060 mg/L 2016 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.341 MG/L 0.080 mg/L 2016 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.167 MG/L 0.060 mg/L 2016 Archived
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.244 MG/L 0.080 mg/L 2015 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.076 MG/L 0.060 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.278 MG/L 0.080 mg/L 2015 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.077 MG/L 0.060 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.244 MG/L 0.080 mg/L 2015 Archived
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.077 MG/L 0.060 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.229 MG/L 0.080 mg/L 2015 Archived
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

127 violations are on record since 2015, of which 110 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Osage Co Rwd #20 (Hulah)
PWSID OK1021410
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 75
Service connections 131
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Whippoorwill tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 3.70 ppb, 25% of the action level.
Does Whippoorwill water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Whippoorwill? ▼
Osage Co Rwd #20 (Hulah) (PWSID OK1021410). Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2025-02-11. No significant deficiencies were recorded.

What Should Whippoorwill 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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