Community Water System · PWS OK2006215
Pontotoc Co RWD # 8
Operator location Ada, Oklahoma - larger served population (> 3,309) at 4,250 people served; 53 SDWIS violations on record from groundwater sources.
- 4,250
- People served (this PWS)
- 53
- EPA violations (this PWS)
- 4
- Health-based (this PWS)
- No PFAS
- UCMR5 (this PWS)
Pontotoc Co RWD # 8 standing, mid SDWIS violation third
4,250 people served (SDWIS) - larger served population (> 3,309). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 8% is middle-third health share (≤ 23%). UCMR5: UCMR5 tested, none detected. Population rank #8,530 of 29,740 among systems serving 500+.
The verdict
Pontotoc Co RWD # 8 lands in the middle third by violation volume (53), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is large (4,250; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 8% (middle-third health share (≤ 23%)). UCMR5 tested this system and reported no PFAS above the minimum reporting level.
- #8,530 of 29,740
- Population · /systems
- #114 of 558
- Population · OK
- 53
- Total EPA violations on record
- 8%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 2,197
- County
- Pontotoc
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 46
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Methoxychlor | MR | 5 | 2020 |
| Coliform (TCR) | MCL | 4 | 1995 |
| Carbofuran | MR | 4 | 2020 |
| E. COLI | MR | 4 | 2014 |
| 2,4-D | MR | 4 | 2020 |
| Atrazine | MR | 4 | 2020 |
| Coliform (TCR) | MR | 2 | 1997 |
| Lead and Copper Rule | MR | 2 | 1994 |
| DICHLOROMETHANE | MR | 1 | 2017 |
| 1,1-Dichloroethylene | MR | 1 | 2017 |
| Tetrachloroethylene | MR | 1 | 2017 |
| CHLOROBENZENE | MR | 1 | 2017 |
| Carbon tetrachloride | MR | 1 | 2017 |
| p-Dichlorobenzene | MR | 1 | 2017 |
| Vinyl chloride | MR | 1 | 2017 |
| 1,1,1-Trichloroethane | MR | 1 | 2017 |
| Trichloroethylene | MR | 1 | 2017 |
| 1,2,4-Trichlorobenzene | MR | 1 | 2017 |
| 1,1,2-Trichloroethane | MR | 1 | 2017 |
| Xylenes, Total | MR | 1 | 2017 |
| cis-1,2-Dichloroethylene | MR | 1 | 2017 |
| o-Dichlorobenzene | MR | 1 | 2017 |
| Benzene | MR | 1 | 2017 |
| Ethylbenzene | MR | 1 | 2017 |
| trans-1,2-Dichloroethylene | MR | 1 | 2017 |
| 1,2-Dichloroethane | MR | 1 | 2017 |
| Toluene | MR | 1 | 2017 |
| Styrene | MR | 1 | 2017 |
| 1,2-Dichloropropane | MR | 1 | 2017 |
Violation Count vs. the National Corpus
Pontotoc Co RWD # 8 has 53 recorded EPA violations, 58% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 41% carry more. 8% of this system's own violations are health-based (4 of 53), and it ranks #8,530 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)
53 Around the middle fewer violations than 41% 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. 0 of 58 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFTA | 9/16/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 9/16/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 9/16/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 9/16/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFEESA | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 3/25/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpS | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 3/25/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 3/25/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFDoA | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 3/25/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 3/25/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 3/25/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 3/25/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFBS | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 3/25/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 3/25/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 3/25/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFDA | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 3/25/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 3/25/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 3/25/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 3/25/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 3/25/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 3/25/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 3/25/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 3/25/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 9Cl-PF3ONS | 10/30/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHpS | 10/30/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 10/30/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFBS | 10/30/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 10/30/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxS | 10/30/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 10/30/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 10/30/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 10/30/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 10/30/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 10/30/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 10/30/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 10/30/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpA | 10/30/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 10/30/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFEESA | 10/30/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 10/30/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
Population served record for Pontotoc Co RWD # 8
EPA SDWIS lists 4,250 people served and 2,197 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
53 violations · 4,250 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
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 Pontotoc Co RWD # 8
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.