Community Water System · PWS AZ0402033
Tombstone City Of
Operator location Tombstone, Arizona - upper-third violation load (> 74 violations) with 744 EPA violations; surface water source; 1,545 served (PWS-level, not municipal population).
- 1,545
- People served (this PWS)
- 744
- EPA violations (this PWS)
- 61
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Tombstone City Of standing, high SDWIS violation third
744 EPA SDWIS violations on record - upper-third violation load (> 74 violations). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 8% is middle-third health share (≤ 23%). Population rank #15,630 of 29,740 among systems serving 500+.
The verdict
Tombstone City Of sits in the upper third of the sitemap cohort by violation count (744), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,545 (mid served population (≤ 3,309)). Health-based share is 8% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #15,630 of 29,740
- Population · /systems
- #222 of 413
- Population · AZ
- 744
- 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
- 927
- County
- Cochise
- School/Daycare
- No
- MCL Violations
- 59
- Monitoring Violations
- 599
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MR | 84 | 2020 |
| Interim Enhanced Surface Water Treatment Rule | MR | 55 | 2023 |
| Chlorine | MR | 50 | 2019 |
| Arsenic | MCL | 50 | 2017 |
| Coliform (TCR) | MR | 45 | 2014 |
| Surface Water Treatment Rule | MR | 41 | 2023 |
| Consumer Confidence Rule | Other | 28 | 2019 |
| Nitrate | MR | 20 | 2006 |
| TTHM | MR | 16 | 2021 |
| Total Haloacetic Acids (HAA5) | MR | 13 | 2017 |
| Di(2-ethylhexyl) phthalate | MR | 8 | 2003 |
| Barium | MR | 8 | 2007 |
| Chromium | MR | 8 | 2007 |
| Selenium | MR | 8 | 2007 |
| Cadmium | MR | 8 | 2007 |
| Mercury | MR | 8 | 2007 |
| cis-1,2-Dichloroethylene | MR | 7 | 2018 |
| 1,1-Dichloroethylene | MR | 7 | 2018 |
| 1,2-Dichloroethane | MR | 7 | 2018 |
| 1,1,1-Trichloroethane | MR | 7 | 2018 |
| Benzene | MR | 7 | 2018 |
| Toluene | MR | 7 | 2018 |
| Styrene | MR | 7 | 2018 |
| DICHLOROMETHANE | MR | 7 | 2018 |
| trans-1,2-Dichloroethylene | MR | 7 | 2018 |
| Carbon tetrachloride | MR | 7 | 2018 |
| 1,1,2-Trichloroethane | MR | 7 | 2018 |
| Ethylbenzene | MR | 7 | 2018 |
| Fluoride | MR | 7 | 2002 |
| Coliform (TCR) | MCL | 7 | 2014 |
Violation Count vs. the National Corpus
Tombstone City Of has 744 recorded EPA violations, 98% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 2% carry more. 8% of this system's own violations are health-based (61 of 744), and it ranks #15,630 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)
744 Higher than most more violations than 98% 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
SDWIS compliance record for Tombstone City Of
744 violations on record for AZ0402033; use EPA SDWIS to confirm return-to-compliance dates and monitoring categories.
Sources: EPA SDWIS · Arizona DEQ, Drinking Water Program
Nationwide peers
744 violations · 1,545 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 Tombstone City 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.