Community Water System · PWS 063500114
Sandia Pueblo
Operator location Bernalillo, EPA Region 6 — Tribal Water Systems - smaller served population (≤ 999) at 497 people served; 21 SDWIS violations on record from groundwater sources.
- 497
- People served (this PWS)
- 21
- EPA violations (this PWS)
- 1
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Sandia Pueblo standing, low SDWIS violation third
497 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 5% is middle-third health share (≤ 23%).
The verdict
Sandia Pueblo is in the lower third by violation count (21; lower-third violation load (≤ 21 violations)). A low count does not mean the system is unmonitored - monitoring and reporting violations still appear in SDWIS. Population served is smaller (497; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 5% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 21
- Total EPA violations on record
- 5%
- Health-based (MCL / treatment failure)
- 497
- 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
- Native American
- Connections
- 174
- School/Daycare
- No
- MCL Violations
- 1
- Monitoring Violations
- 11
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 9 | 2007 |
| Consumer Confidence Rule | Other | 9 | 2006 |
| Nitrate-Nitrite | MR | 2 | 2006 |
| Coliform (TCR) | MCL | 1 | 1996 |
Violation Count vs. the National Corpus
Sandia Pueblo has 21 recorded EPA violations, 33% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 66% carry more. 5% of this system's own violations are health-based (1 of 21), 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)
21 Lower than most fewer violations than 66% 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 Sandia Pueblo
EPA SDWIS lists 497 people served and 174 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
21 violations · 497 served: nearest cross-state SDWIS matches.
Cross-state systems with similarly light violation ledgers
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
What to do with Sandia Pueblo
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in EPA Region 6 — Tribal Water Systems compares on the same EPA violation measures. EPA Region 6 — Tribal Water Systems 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.