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Community Water System · PWS WY5600022

Greybull, Town Of

Operator location Greybull, Wyoming - upper-third violation load (> 74 violations) with 93 EPA violations; groundwater source; 3,260 served (PWS-level, not municipal population).

3,260
People served (this PWS)
93
EPA violations (this PWS)
2
Health-based (this PWS)
Untested
UCMR5 (this PWS)
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Greybull, Town Of standing, high SDWIS violation third

93 EPA SDWIS violations on record - upper-third violation load (> 74 violations). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 2% is middle-third health share (≤ 23%). Population rank #10,024 of 29,740 among systems serving 500+.

The verdict

Greybull, Town Of sits in the upper third of the sitemap cohort by violation count (93), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 3,260 (mid served population (≤ 3,309)). Health-based share is 2% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.

#10,024 of 29,740
Population · /systems
#32 of 147
Population · WY
93
Total EPA violations on record
2%
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
Local
Connections
1,325
County
Big Horn
School/Daycare
No
MCL Violations
2
Monitoring Violations
86
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 5 2000
Gross Alpha, Excl. Radon and U MR 4 2022
Combined Uranium MR 4 2022
Radium-228 MR 4 2022
Radium-226 MR 4 2022
Nitrate MR 4 1996
Endrin MR 2 2017
BHC-GAMMA MR 2 2017
Methoxychlor MR 2 2017
Toxaphene MR 2 2017
Diquat MR 2 2017
Di(2-ethylhexyl) adipate MR 2 2017
Di(2-ethylhexyl) phthalate MR 2 2017
Atrazine MR 2 2017
Heptachlor MR 2 2017
Heptachlor epoxide MR 2 2017
2,4-D MR 2 2017
HEXACHLOROBENZENE MR 2 2017
Benzo(a)pyrene MR 2 2017
Pentachlorophenol MR 2 2017
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2017
Chlordane MR 2 2017
Dalapon MR 2 2017
Endothall MR 2 2017
Picloram MR 2 2017
Dinoseb MR 2 2017
Hexachlorocyclopentadiene MR 2 2017
Carbofuran MR 2 2017
2,4,5-TP MR 2 2017
ETHYLENE DIBROMIDE MR 2 2017

Violation Count vs. the National Corpus

Greybull, Town Of has 93 recorded EPA violations, 72% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 28% carry more. 2% of this system's own violations are health-based (2 of 93), and it ranks #10,024 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)

93 Around the middle fewer violations than 28% 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

SDWIS compliance record for Greybull, Town Of

93 violations on record for WY5600022; use EPA SDWIS to confirm return-to-compliance dates and monitoring categories.

Sources: EPA SDWIS

Nationwide peers

93 violations · 3,260 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 near this population served

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

4 peers

What to do with Greybull, Town Of

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

  • See how every tracked system in Wyoming compares on the same EPA violation measures. Wyoming 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.

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