Community Water System · PWS OK1021202
Ponca City Mun Water
Operator location Ponca City, Oklahoma - 26% of 98 violations are health-based (upper-third health share (> 23%)); surface water source; 27,155 served per SDWIS.
- 27,155
- People served (this PWS)
- 98
- EPA violations (this PWS)
- 25
- Health-based (this PWS)
- 4 PFAS
- UCMR5 (this PWS)
Ponca City Mun Water standing, high SDWIS violation third
26% of 98 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 26% is upper-third health share (> 23%). UCMR5: middle-third PFAS panel (≤ 4 compounds). Population rank #2,048 of 29,740 among systems serving 500+.
The verdict
Ponca City Mun Water sits in the upper third of the sitemap cohort by violation count (98), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (27,155; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 26% - most of this ledger is MCL or treatment-technique exceedance. UCMR5 detected 4 PFAS compounds (middle-third PFAS panel (≤ 4 compounds)).
- #2,048 of 29,740
- Population · /systems
- #16 of 558
- Population · OK
- 98
- Total EPA violations on record
- 26%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
4 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 12,412
- County
- Kay
- School/Daycare
- No
- MCL Violations
- 14
- Monitoring Violations
- 42
- Treatment Tech Violations
- 11
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| E. COLI | MR | 18 | 2017 |
| Coliform (TCR) | MCL | 14 | 2003 |
| CARBON, TOTAL | MR | 9 | 2007 |
| Interim Enhanced Surface Water Treatment Rule | TT | 8 | 2011 |
| TTHM | MR | 5 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2023 |
| Coliform (TCR) | MR | 4 | 2009 |
| Surface Water Treatment Rule | TT | 3 | 2002 |
| Surface Water Treatment Rule | MR | 1 | 1998 |
Violation Count vs. the National Corpus
Ponca City Mun Water has 98 recorded EPA violations, 73% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 27% carry more. 26% of this system's own violations are health-based (25 of 98), and it ranks #2,048 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
98 Around the middle fewer violations than 27% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 13 of 116 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| NEtFOSAA | 8/7/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 8/7/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 8/7/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 8/7/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 8/7/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 8/7/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 8/7/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 8/7/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFHpS | 8/7/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 8/7/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 8/7/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFHxA | 8/7/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 8/7/2024 | 4.50 ppt | 3.00 ppt | Detected |
| NFDHA | 8/7/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHxS | 8/7/2024 | 5.80 ppt | 3.00 ppt | Detected |
| NMeFOSAA | 8/7/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFOS | 8/7/2024 | 6.60 ppt | 4.00 ppt | Detected |
| PFOA | 8/7/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 8/7/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDoA | 8/7/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 8/7/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFUnA | 8/7/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 8/7/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 8/7/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFMPA | 8/7/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 8/7/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 8/7/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 8/7/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 8/7/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 5/8/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 5/8/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 5/8/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 5/8/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeA | 5/8/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 5/8/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 5/8/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeS | 5/8/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMPA | 5/8/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| NMeFOSAA | 5/8/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 5/8/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 5/8/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 5/8/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| NFDHA | 5/8/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFDA | 5/8/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 5/8/2024 | 5.00 ppt | 3.00 ppt | Detected |
| PFHpA | 5/8/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 5/8/2024 | 5.50 ppt | 3.00 ppt | Detected |
| PFNA | 5/8/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 5/8/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 5/8/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
Health-based violations on Ponca City Mun Water
25 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for OK1021202.
Sources: EPA SDWIS
Nationwide peers
98 violations · 27,155 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Ponca City Mun Water
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Oklahoma compares on the same EPA violation measures. Oklahoma systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.