Community Water System · PWS AZ0411017
Florence Water Company
Operator location Florence, Arizona - larger served population (> 3,309) at 15,900 people served; 272 SDWIS violations on record from groundwater sources.
- 15,900
- People served (this PWS)
- 272
- EPA violations (this PWS)
- 13
- Health-based (this PWS)
- 3 PFAS
- UCMR5 (this PWS)
Florence Water Company standing, high SDWIS violation third
15,900 people served (SDWIS) - larger served population (> 3,309). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 5% is middle-third health share (≤ 23%). UCMR5: middle-third PFAS panel (≤ 4 compounds). Population rank #3,291 of 29,740 among systems serving 500+.
The verdict
Florence Water Company sits in the upper third of the sitemap cohort by violation count (272), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (15,900; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 5% (middle-third health share (≤ 23%)). UCMR5 detected 3 PFAS compounds (middle-third PFAS panel (≤ 4 compounds)).
- #3,291 of 29,740
- Population · /systems
- #56 of 413
- Population · AZ
- 272
- Total EPA violations on record
- 5%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
3 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 3,590
- County
- Pinal
- School/Daycare
- No
- MCL Violations
- 13
- Monitoring Violations
- 228
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 38 | 2019 |
| Chlorine | MR | 26 | 2018 |
| Consumer Confidence Rule | Other | 20 | 2025 |
| Coliform (TCR) | MR | 19 | 2008 |
| Coliform (TCR) | MCL | 12 | 2012 |
| Lead and Copper Rule | MR | 8 | 2025 |
| TTHM | MR | 6 | 2025 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2025 |
| Endrin | MR | 4 | 2006 |
| Toxaphene | MR | 4 | 2006 |
| E. COLI | MR | 3 | 2016 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2003 |
| 1,2-Dichloroethane | MR | 3 | 2003 |
| Carbon tetrachloride | MR | 3 | 2003 |
| 1,2-Dichloropropane | MR | 3 | 2003 |
| 1,1,2-Trichloroethane | MR | 3 | 2003 |
| Toluene | MR | 3 | 2003 |
| Xylenes, Total | MR | 3 | 2003 |
| o-Dichlorobenzene | MR | 3 | 2003 |
| trans-1,2-Dichloroethylene | MR | 3 | 2003 |
| 1,1,1-Trichloroethane | MR | 3 | 2003 |
| Tetrachloroethylene | MR | 3 | 2003 |
| Benzene | MR | 3 | 2003 |
| Ethylbenzene | MR | 3 | 2003 |
| cis-1,2-Dichloroethylene | MR | 3 | 2003 |
| p-Dichlorobenzene | MR | 3 | 2003 |
| 1,1-Dichloroethylene | MR | 3 | 2003 |
| CHLOROBENZENE | MR | 3 | 2003 |
| DICHLOROMETHANE | MR | 3 | 2003 |
| Trichloroethylene | MR | 3 | 2003 |
Violation Count vs. the National Corpus
Florence Water Company has 272 recorded EPA violations, 90% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 10% carry more. 5% of this system's own violations are health-based (13 of 272), and it ranks #3,291 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)
272 Higher than most more violations than 90% 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. 6 of 232 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFTrDA | 9/5/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 9/5/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| NMeFOSAA | 9/5/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 9/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeS | 9/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| HFPO-DA | 9/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 9/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 9/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 9/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 9/5/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHpS | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| ADONA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 9/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 9Cl-PF3ONS | 9/5/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFBA | 9/5/2023 | 9.00 ppt | 5.00 ppt | Detected |
| PFBS | 9/5/2023 | 60.00 ppt | 3.00 ppt | Detected |
| PFHpA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 9/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 9/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 9/5/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 9/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxS | 9/5/2023 | 7.00 ppt | 3.00 ppt | Detected |
| PFHpS | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 9/5/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 9/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 9/5/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFPeS | 9/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 9/5/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 9/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 9/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 9/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFNA | 9/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFBS | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 9/5/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFBA | 9/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpA | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 9/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 9/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 9/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
Population served record for Florence Water Company
EPA SDWIS lists 15,900 people served and 3,590 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
272 violations · 15,900 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 with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Florence Water Company
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.