Community Water System · PWS 083890003
Twin Buttes Water Plant
Operator location New Town, EPA Region 8 — Tribal Water Systems - smaller served population (≤ 999) at 621 people served; 117 SDWIS violations on record from surface water sources.
- 621
- People served (this PWS)
- 117
- EPA violations (this PWS)
- 15
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Twin Buttes Water Plant standing, high SDWIS violation third
621 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 13% is middle-third health share (≤ 23%). Population rank #25,747 of 29,740 among systems serving 500+.
The verdict
Twin Buttes Water Plant sits in the upper third of the sitemap cohort by violation count (117), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (621; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 13% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #25,747 of 29,740
- Population · /systems
- #48 of 55
- Population · 08
- 117
- Total EPA violations on record
- 13%
- 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
- Federal
- Connections
- 207
- School/Daycare
- No
- MCL Violations
- 12
- Monitoring Violations
- 96
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 34 | 2013 |
| TTHM | MCL | 12 | 2021 |
| Mercury | MR | 4 | 1996 |
| Arsenic | MR | 4 | 1996 |
| Cadmium | MR | 4 | 1996 |
| Chromium | MR | 4 | 1996 |
| Nitrate | MR | 4 | 1999 |
| Barium | MR | 4 | 1996 |
| Selenium | MR | 4 | 1996 |
| Lead and Copper Rule | MR | 3 | 2010 |
| Combined Uranium | MR | 3 | 2021 |
| Radium-226 | MR | 3 | 2021 |
| Combined Radium (-226 and -228) | MR | 3 | 2021 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 2021 |
| Radium-228 | MR | 3 | 2021 |
| Fluoride | MR | 3 | 1986 |
| Surface Water Treatment Rule | TT | 3 | 1995 |
| Thallium, Total | MR | 2 | 1999 |
| CYANIDE | MR | 2 | 1999 |
| Antimony, Total | MR | 2 | 1999 |
| Beryllium, Total | MR | 2 | 1999 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2015 |
| Nickel | MR | 1 | 1999 |
| 2,4,5-TP | MR | 1 | 1983 |
| Surface Water Treatment Rule | MR | 1 | 1998 |
| TTHM | MR | 1 | 2015 |
Violation Count vs. the National Corpus
Twin Buttes Water Plant has 117 recorded EPA violations, 76% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 24% carry more. 13% of this system's own violations are health-based (15 of 117), and it ranks #25,747 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)
117 Higher than most more violations than 76% 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 Twin Buttes Water Plant
EPA SDWIS lists 621 people served and 207 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
117 violations · 621 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 smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Twin Buttes Water Plant
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in EPA Region 8 — Tribal Water Systems compares on the same EPA violation measures. EPA Region 8 — 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.