Community Water System · PWS AZ0414070
Jones Coop Water Assoc
Operator location Yuma, Arizona - smaller served population (≤ 999) at 35 people served; 363 SDWIS violations on record from groundwater sources.
- 35
- People served (this PWS)
- 363
- EPA violations (this PWS)
- 55
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Jones Coop Water Assoc standing, high SDWIS violation third
35 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 15% is middle-third health share (≤ 23%).
The verdict
Jones Coop Water Assoc sits in the upper third of the sitemap cohort by violation count (363), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (35; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 15% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 363
- Total EPA violations on record
- 15%
- Health-based (MCL / treatment failure)
- 35
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Public/Private
- Connections
- 20
- County
- Yuma
- School/Daycare
- No
- MCL Violations
- 41
- Monitoring Violations
- 221
- Treatment Tech Violations
- 14
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 61 | 2016 |
| Consumer Confidence Rule | Other | 53 | 2025 |
| Arsenic | MCL | 40 | 2024 |
| Lead and Copper Rule | MR | 27 | 2025 |
| Arsenic | MR | 23 | 2021 |
| Public Notice | Other | 17 | 2025 |
| Groundwater Rule | TT | 12 | 2022 |
| Nitrate | MR | 12 | 2004 |
| Revised Total Coliform Rule | RPT | 11 | 2025 |
| Revised Total Coliform Rule | MON | 8 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 2 | 2024 |
| Barium | MR | 2 | 1998 |
| Cadmium | MR | 2 | 1998 |
| Chromium | MR | 2 | 1998 |
| Fluoride | MR | 2 | 1998 |
| Mercury | MR | 2 | 1998 |
| Selenium | MR | 2 | 1998 |
| 1,2,4-Trichlorobenzene | MR | 2 | 2002 |
| cis-1,2-Dichloroethylene | MR | 2 | 2002 |
| o-Dichlorobenzene | MR | 2 | 2002 |
| p-Dichlorobenzene | MR | 2 | 2002 |
| 1,1-Dichloroethylene | MR | 2 | 2002 |
| 1,2-Dichloroethane | MR | 2 | 2002 |
| 1,1,1-Trichloroethane | MR | 2 | 2002 |
| 1,2-Dichloropropane | MR | 2 | 2002 |
| Trichloroethylene | MR | 2 | 2002 |
| Benzene | MR | 2 | 2002 |
| Styrene | MR | 2 | 2002 |
| Xylenes, Total | MR | 2 | 2002 |
| trans-1,2-Dichloroethylene | MR | 2 | 2002 |
Violation Count vs. the National Corpus
Jones Coop Water Assoc has 363 recorded EPA violations, 93% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 7% carry more. 15% of this system's own violations are health-based (55 of 363), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
363 Higher than most more violations than 93% 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
Population served record for Jones Coop Water Assoc
EPA SDWIS lists 35 people served and 20 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Arizona DEQ, Drinking Water Program
Nationwide peers
363 violations · 35 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.
What to do with Jones Coop Water Assoc
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.