Community Water System · PWS AZ0410093
Sandario Water Company
Operator location Glendale, Arizona - smaller served population (≤ 999) at 870 people served; 45 SDWIS violations on record from groundwater sources.
- 870
- People served (this PWS)
- 45
- EPA violations (this PWS)
- 5
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Sandario Water Company standing, mid SDWIS violation third
870 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 11% is middle-third health share (≤ 23%). Population rank #21,523 of 29,740 among systems serving 500+.
The verdict
Sandario Water Company lands in the middle third by violation volume (45), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (870; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 11% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #21,523 of 29,740
- Population · /systems
- #298 of 413
- Population · AZ
- 45
- Total EPA violations on record
- 11%
- 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
- Private
- Connections
- 348
- County
- Pima
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 33
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 13 | 2013 |
| Chlorine | MR | 7 | 2015 |
| Coliform (TCR) | MCL | 5 | 2015 |
| Consumer Confidence Rule | Other | 4 | 2009 |
| Revised Total Coliform Rule | MON | 3 | 2019 |
| Public Notice | Other | 2 | 2020 |
| CYANIDE | MR | 2 | 1998 |
| Lead and Copper Rule | MR | 2 | 2019 |
| Glyphosate | MR | 2 | 1998 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2010 |
| Pentachlorophenol | MR | 1 | 1998 |
| Nitrate | MR | 1 | 2004 |
| TTHM | MR | 1 | 2010 |
Violation Count vs. the National Corpus
Sandario Water Company has 45 recorded EPA violations, 54% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 46% carry more. 11% of this system's own violations are health-based (5 of 45), and it ranks #21,523 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)
45 Around the middle fewer violations than 46% 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 Sandario Water Company
EPA SDWIS lists 870 people served and 348 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
45 violations · 870 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 smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Sandario 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.