Community Water System · PWS TX1260018
Johnson County Sud
Operator location Joshua, Texas - larger served population (> 3,309) at 65,517 people served; 40 SDWIS violations on record from surface water sources.
- 65,517
- People served (this PWS)
- 40
- EPA violations (this PWS)
- 5
- Health-based (this PWS)
- 4 PFAS
- UCMR5 (this PWS)
Johnson County Sud standing, mid SDWIS violation third
65,517 people served (SDWIS) - larger served population (> 3,309). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 13% is middle-third health share (≤ 23%). UCMR5: middle-third PFAS panel (≤ 4 compounds). Population rank #801 of 29,740 among systems serving 500+.
The verdict
Johnson County Sud lands in the middle third by violation volume (40), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is large (65,517; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 13% (middle-third health share (≤ 23%)). UCMR5 detected 4 PFAS compounds (middle-third PFAS panel (≤ 4 compounds)).
- #801 of 29,740
- Population · /systems
- #68 of 3,040
- Population · TX
- 40
- Total EPA violations on record
- 13%
- 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
- 22,824
- County
- Johnson
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 30
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 8 | 2021 |
| Chlorine | MR | 5 | 2013 |
| TTHM | MCL | 4 | 1993 |
| Lead and Copper Rule | MR | 4 | 2016 |
| Consumer Confidence Rule | Other | 3 | 2005 |
| Coliform (TCR) | MR | 1 | 1991 |
| 2,4,5-TP | MR | 1 | 2021 |
| Dinoseb | MR | 1 | 2021 |
| Carbofuran | MR | 1 | 2021 |
| Coliform (TCR) | MCL | 1 | 1993 |
| Fluoride | MR | 1 | 2021 |
| Aldicarb | MR | 1 | 2021 |
| OXAMYL | MR | 1 | 2021 |
| Dalapon | MR | 1 | 2021 |
| Aldicarb sulfone | MR | 1 | 2021 |
| Picloram | MR | 1 | 2021 |
| Aldicarb sulfoxide | MR | 1 | 2021 |
| Coliform (TCR) | Other | 1 | 1993 |
| 2,4-D | MR | 1 | 2021 |
| CYANIDE | MR | 1 | 2021 |
Violation Count vs. the National Corpus
Johnson County Sud has 40 recorded EPA violations, 50% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 49% carry more. 13% of this system's own violations are health-based (5 of 40), and it ranks #801 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)
40 Around the middle fewer violations than 49% 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. 37 of 1160 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFMBA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 8/28/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFMPA | 8/28/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 8/28/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHpS | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 8/28/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| NEtFOSAA | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 8/28/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFBS | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeS | 8/28/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 8/28/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 9Cl-PF3ONS | 8/28/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFOA | 8/28/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 8/28/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFUnA | 8/28/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 8/28/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 8/28/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| ADONA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 8/28/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeS | 8/28/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 8/28/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 8/28/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 8/28/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 8/28/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
Population served record for Johnson County Sud
EPA SDWIS lists 65,517 people served and 22,824 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch
Nationwide peers
40 violations · 65,517 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 Johnson County Sud
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Texas compares on the same EPA violation measures. Texas 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.