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States → EPA Region 9 — Tribal Water Systems

Community Water System · PWS 090400239

SCUA Cutter

Operator location San Carlos, EPA Region 9 — Tribal Water Systems - smaller served population (≤ 999) at 574 people served; 323 SDWIS violations on record from groundwater sources.

574
People served (this PWS)
323
EPA violations (this PWS)
32
Health-based (this PWS)
Untested
UCMR5 (this PWS)
Follow published updates (RSS)

SCUA Cutter standing, high SDWIS violation third

574 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 10% is middle-third health share (≤ 23%). Population rank #26,988 of 29,740 among systems serving 500+.

The verdict

SCUA Cutter sits in the upper third of the sitemap cohort by violation count (323), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (574; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 10% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.

#26,988 of 29,740
Population · /systems
#122 of 129
Population · 09
323
Total EPA violations on record
10%
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
Native American
Connections
93
School/Daycare
No
MCL Violations
32
Monitoring Violations
228
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 110 2016
Coliform (TCR) MCL 32 2013
Chlorine MR 23 2025
Gross Alpha, Excl. Radon and U MR 16 2010
Combined Uranium MR 16 2010
Combined Radium (-226 and -228) MR 16 2010
TTHM MR 13 2023
Total Haloacetic Acids (HAA5) MR 12 2023
Lead and Copper Rule MR 12 2010
Consumer Confidence Rule Other 12 2022
Revised Total Coliform Rule RPT 10 2023
Public Notice Other 6 2022
Asbestos MR 4 2002
Revised Total Coliform Rule MON 4 2022
E. COLI MR 2 2012
LEAD AND COPPER RULE REVISIONS RPT 2 2024
Groundwater Rule Other 2 2018

Violation Count vs. the National Corpus

SCUA Cutter has 323 recorded EPA violations, 92% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 8% carry more. 10% of this system's own violations are health-based (32 of 323), and it ranks #26,988 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)

323 Higher than most more violations than 92% 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 SCUA Cutter

EPA SDWIS lists 574 people served and 93 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.

EPA SDWIS · PWS 090400239

Sources: EPA SDWIS

Nationwide peers

323 violations · 574 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.

4 peers

Cross-state systems with smaller service footprints

Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).

4 peers

What to do with SCUA Cutter

Use this system's EPA-reported record as a starting filter, not a final verdict.

EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater