Community Water System · PWS NN3500280
Ramah-Mountain View RNUA
Operator location Pinehill, Navajo Nation - smaller served population (≤ 999) at 215 people served; 666 SDWIS violations on record from groundwater sources.
- 215
- People served (this PWS)
- 666
- EPA violations (this PWS)
- 7
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Ramah-Mountain View RNUA standing, high SDWIS violation third
215 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 1% is middle-third health share (≤ 23%).
The verdict
Ramah-Mountain View RNUA sits in the upper third of the sitemap cohort by violation count (666), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (215; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 1% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 666
- Total EPA violations on record
- 1%
- Health-based (MCL / treatment failure)
- 215
- 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
- 39
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 605
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 42 | 2015 |
| Revised Total Coliform Rule | MON | 38 | 2025 |
| Revised Total Coliform Rule | RPT | 20 | 2025 |
| Nitrate | MR | 19 | 2024 |
| Nitrite | MR | 18 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 12 | 2021 |
| TTHM | MR | 12 | 2021 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 10 | 2011 |
| ETHYLENE DIBROMIDE | MR | 10 | 2011 |
| Methoxychlor | MR | 8 | 2011 |
| Toxaphene | MR | 8 | 2011 |
| Dalapon | MR | 8 | 2011 |
| Diquat | MR | 8 | 2011 |
| Endothall | MR | 8 | 2011 |
| Glyphosate | MR | 8 | 2011 |
| Di(2-ethylhexyl) adipate | MR | 8 | 2011 |
| OXAMYL | MR | 8 | 2011 |
| Simazine | MR | 8 | 2011 |
| Di(2-ethylhexyl) phthalate | MR | 8 | 2011 |
| Picloram | MR | 8 | 2011 |
| Dinoseb | MR | 8 | 2011 |
| Hexachlorocyclopentadiene | MR | 8 | 2011 |
| Carbofuran | MR | 8 | 2011 |
| Atrazine | MR | 8 | 2011 |
| LASSO | MR | 8 | 2011 |
| 2,3,7,8-TCDD | MR | 8 | 2011 |
| Heptachlor | MR | 8 | 2011 |
| Heptachlor epoxide | MR | 8 | 2011 |
| 2,4-D | MR | 8 | 2011 |
| 2,4,5-TP | MR | 8 | 2011 |
Violation Count vs. the National Corpus
Ramah-Mountain View RNUA has 666 recorded EPA violations, 97% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 3% carry more. 1% of this system's own violations are health-based (7 of 666), 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)
666 Higher than most more violations than 97% 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 Ramah-Mountain View RNUA
EPA SDWIS lists 215 people served and 39 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
666 violations · 215 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.
What to do with Ramah-Mountain View RNUA
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Navajo Nation compares on the same EPA violation measures. Navajo Nation 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.