Community Water System · PWS 083090090
Two Medicine Water - East Glacier
Operator location Browning, EPA Region 8 — Tribal Water Systems - 14% of 64 violations are health-based (middle-third health share (≤ 23%)); surface water source; 1,504 served per SDWIS.
- 1,504
- People served (this PWS)
- 64
- EPA violations (this PWS)
- 9
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Two Medicine Water - East Glacier standing, mid SDWIS violation third
14% of 64 recorded violations are health-based - middle-third health share (≤ 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 14% is middle-third health share (≤ 23%). Population rank #15,834 of 29,740 among systems serving 500+.
The verdict
Two Medicine Water - East Glacier lands in the middle third by violation volume (64), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is mid-pack at 1,504 (mid served population (≤ 3,309)). Health-based share is 14% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #15,834 of 29,740
- Population · /systems
- #28 of 55
- Population · 08
- 64
- Total EPA violations on record
- 14%
- 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
- 240
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 44
- Treatment Tech Violations
- 9
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 8 | 2023 |
| Surface Water Treatment Rule | TT | 7 | 2017 |
| Interim Enhanced Surface Water Treatment Rule | Other | 3 | 2020 |
| Surface Water Treatment Rule | MR | 2 | 2016 |
| Long Term 2 Enhanced Surface Water Treatment Rule | TT | 2 | 2022 |
| Nitrate-Nitrite | MR | 1 | 2020 |
| Pentachlorophenol | MR | 1 | 2020 |
| Simazine | MR | 1 | 2020 |
| Endrin | MR | 1 | 2020 |
| Total Polychlorinated Biphenyls (PCB) | MR | 1 | 2020 |
| Glyphosate | MR | 1 | 2020 |
| Dalapon | MR | 1 | 2020 |
| Benzo(a)pyrene | MR | 1 | 2020 |
| Atrazine | MR | 1 | 2020 |
| OXAMYL | MR | 1 | 2020 |
| 2,4-D | MR | 1 | 2020 |
| LASSO | MR | 1 | 2020 |
| Picloram | MR | 1 | 2020 |
| BHC-GAMMA | MR | 1 | 2020 |
| Endothall | MR | 1 | 2020 |
| Diquat | MR | 1 | 2020 |
| Carbofuran | MR | 1 | 2020 |
| Mercury | MR | 1 | 2022 |
| Thallium, Total | MR | 1 | 2022 |
| Arsenic | MR | 1 | 2022 |
| Fluoride | MR | 1 | 2022 |
| Nickel | MR | 1 | 2022 |
| Selenium | MR | 1 | 2022 |
| Heptachlor | MR | 1 | 2020 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2020 |
Violation Count vs. the National Corpus
Two Medicine Water - East Glacier has 64 recorded EPA violations, 63% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 37% carry more. 14% of this system's own violations are health-based (9 of 64), and it ranks #15,834 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)
64 Around the middle fewer violations than 37% 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
Health-based violations on Two Medicine Water - East Glacier
9 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for 083090090.
Sources: EPA SDWIS
Nationwide peers
64 violations · 1,504 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Two Medicine Water - East Glacier
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.