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Mountain Park, OK Tap Water Quality 2026

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

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

Main Utility: Mountain Park Public Works Auth PWSID: OK3003807 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 6.61 ppb, 44% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Mountain Park earns a C for water quality

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

Lead: 6.61 ppb — 44% of the federal action level
PFAS never sampled at this system
54 violations since 2015, 47 health-based
No violations currently open
Mountain Park's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 6.61 ppb — 44% of the federal action level
✓ Lower lead than 9% of Oklahoma utilities
Population Served
320
~181 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
54 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
44% of EPA action level
6.61 ppb
Action level: 15 ppb
The 90th-percentile lead result is 6.61 ppb, 44% 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
TTHM MCL EXCEEDANCE 0.118 MG/L 0.080 mg/L 2026 Archived
TTHM MCL EXCEEDANCE 0.123 MG/L 0.080 mg/L 2025 Archived
Revised Total Coliform Rule MCL EXCEEDANCE — — 2025 Resolved
TTHM MCL EXCEEDANCE 0.088 MG/L 0.080 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.104 MG/L 0.080 mg/L 2025 Archived
TTHM MCL EXCEEDANCE 0.116 MG/L 0.080 mg/L 2025 Archived
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
TTHM MCL EXCEEDANCE 0.122 MG/L 0.080 mg/L 2024 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Consumer Confidence Rule OTHER — — 2024 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Resolved
TTHM MCL EXCEEDANCE 0.124 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.126 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.108 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.086 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.134 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.169 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.193 MG/L 0.080 mg/L 2023 Archived
TTHM MCL EXCEEDANCE 0.208 MG/L 0.080 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.226 MG/L 0.080 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.211 MG/L 0.080 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.188 MG/L 0.080 mg/L 2022 Archived
TTHM MCL EXCEEDANCE 0.193 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.179 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.148 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.163 MG/L 0.080 mg/L 2021 Archived
TTHM MCL EXCEEDANCE 0.168 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.179 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.201 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.169 MG/L 0.080 mg/L 2020 Archived
TTHM MCL EXCEEDANCE 0.168 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.15 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.185 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.208 MG/L 0.080 mg/L 2019 Archived
TTHM MCL EXCEEDANCE 0.216 MG/L 0.080 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.209 MG/L 0.080 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.195 MG/L 0.080 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.207 MG/L 0.080 mg/L 2018 Archived
TTHM MCL EXCEEDANCE 0.197 MG/L 0.080 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.218 MG/L 0.080 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.237 MG/L 0.080 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.268 MG/L 0.080 mg/L 2017 Archived
TTHM MCL EXCEEDANCE 0.28 MG/L 0.080 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.278 MG/L 0.080 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.201 MG/L 0.080 mg/L 2016 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2016 Resolved
TTHM MCL EXCEEDANCE 0.222 MG/L 0.080 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.224 MG/L 0.080 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.25 MG/L 0.080 mg/L 2015 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.316 MG/L 0.080 mg/L 2015 Archived
TTHM MCL EXCEEDANCE 0.302 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

54 violations are on record since 2015, of which 47 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Mountain Park Public Works Auth
PWSID OK3003807
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 320
Service connections 181
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Mountain Park tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 6.61 ppb, 44% of the action level.
Does Mountain Park 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 Mountain Park? ▼
Mountain Park Public Works Auth (PWSID OK3003807), one of 2 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2025-10-08. Inspectors recorded 1 significant deficiency.

What Should Mountain Park Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
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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