Community Water System · PWS AZ0414022
Wellton Town Of
Operator location Wellton, Arizona - 24% of 929 violations are health-based (upper-third health share (> 23%)); surface water source; 3,000 served per SDWIS.
- 3,000
- People served (this PWS)
- 929
- EPA violations (this PWS)
- 221
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Wellton Town Of standing, high SDWIS violation third
24% of 929 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 24% is upper-third health share (> 23%). Population rank #10,589 of 29,740 among systems serving 500+.
The verdict
Wellton Town Of sits in the upper third of the sitemap cohort by violation count (929), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 3,000 (mid served population (≤ 3,309)). Health-based share is 24% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #10,589 of 29,740
- Population · /systems
- #155 of 413
- Population · AZ
- 929
- Total EPA violations on record
- 24%
- 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
- 1,573
- County
- Yuma
- School/Daycare
- No
- MCL Violations
- 148
- Monitoring Violations
- 542
- Treatment Tech Violations
- 73
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 148 | 2024 |
| Interim Enhanced Surface Water Treatment Rule | MR | 80 | 2025 |
| Surface Water Treatment Rule | MR | 72 | 2025 |
| CARBON, TOTAL | TT | 46 | 2025 |
| TTHM | MR | 43 | 2025 |
| Coliform (TCR) | MR | 42 | 2016 |
| Public Notice | Other | 41 | 2025 |
| Chlorine | MR | 33 | 2023 |
| Revised Total Coliform Rule | RPT | 27 | 2025 |
| Revised Total Coliform Rule | MON | 23 | 2021 |
| Interim Enhanced Surface Water Treatment Rule | TT | 23 | 2025 |
| CARBON, TOTAL | MR | 22 | 2023 |
| Consumer Confidence Rule | Other | 21 | 2022 |
| Arsenic | MR | 21 | 2025 |
| Lead and Copper Rule | MR | 19 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 18 | 2025 |
| Nitrate | MR | 14 | 2006 |
| E. COLI | MR | 14 | 2018 |
| Selenium | MR | 8 | 1999 |
| Chromium | MR | 8 | 1999 |
| Fluoride | MR | 8 | 1999 |
| Mercury | MR | 8 | 1999 |
| Cadmium | MR | 8 | 1999 |
| Barium | MR | 7 | 1999 |
| Gross Alpha, Excl. Radon and U | MR | 5 | 2025 |
| LEAD AND COPPER RULE REVISIONS | TT | 4 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 4 | 2024 |
| 2,4-D | MR | 3 | 1998 |
| Endrin | MR | 3 | 1998 |
| Methoxychlor | MR | 3 | 1998 |
Violation Count vs. the National Corpus
Wellton Town Of has 929 recorded EPA violations, 99% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 1% carry more. 24% of this system's own violations are health-based (221 of 929), and it ranks #10,589 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)
929 Higher than most more violations than 99% 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
Health-based violations on Wellton Town Of
221 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for AZ0414022.
Sources: EPA SDWIS · Arizona DEQ, Drinking Water Program
Nationwide peers
929 violations · 3,000 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Wellton Town Of
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Arizona compares on the same EPA violation measures. Arizona 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.