Community Water System · PWS UTAH23002
Grantsville City
Operator location Grantsville, Utah - larger served population (> 3,309) at 13,400 people served; 382 SDWIS violations on record from groundwater sources.
- 13,400
- People served (this PWS)
- 382
- EPA violations (this PWS)
- 17
- Health-based (this PWS)
- No PFAS
- UCMR5 (this PWS)
Grantsville City standing, high SDWIS violation third
13,400 people served (SDWIS) - larger served population (> 3,309). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 4% is middle-third health share (≤ 23%). UCMR5: UCMR5 tested, none detected. Population rank #3,777 of 29,740 among systems serving 500+.
The verdict
Grantsville City sits in the upper third of the sitemap cohort by violation count (382), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (13,400; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 4% (middle-third health share (≤ 23%)). UCMR5 tested this system and reported no PFAS above the minimum reporting level.
- #3,777 of 29,740
- Population · /systems
- #62 of 321
- Population · UT
- 382
- Total EPA violations on record
- 4%
- 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
- 4,318
- County
- Tooele
- School/Daycare
- No
- MCL Violations
- 17
- Monitoring Violations
- 313
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Radium-228 | MR | 20 | 2025 |
| Radium-226 | MR | 20 | 2025 |
| Coliform (TCR) | MCL | 17 | 2013 |
| Gross Alpha, Excl. Radon and U | MR | 17 | 2025 |
| Combined Uranium | MR | 14 | 2010 |
| Combined Radium (-226 and -228) | MR | 14 | 2010 |
| Endrin | MR | 7 | 2025 |
| Methoxychlor | MR | 7 | 2025 |
| Toxaphene | MR | 7 | 2025 |
| Dalapon | MR | 7 | 2025 |
| OXAMYL | MR | 7 | 2025 |
| Simazine | MR | 7 | 2025 |
| Picloram | MR | 7 | 2025 |
| Hexachlorocyclopentadiene | MR | 7 | 2025 |
| Carbofuran | MR | 7 | 2025 |
| Heptachlor | MR | 7 | 2025 |
| HEXACHLOROBENZENE | MR | 7 | 2025 |
| Benzo(a)pyrene | MR | 7 | 2025 |
| Pentachlorophenol | MR | 7 | 2025 |
| Total Polychlorinated Biphenyls (PCB) | MR | 7 | 2025 |
| Di(2-ethylhexyl) adipate | MR | 7 | 2025 |
| Di(2-ethylhexyl) phthalate | MR | 7 | 2025 |
| Atrazine | MR | 7 | 2025 |
| LASSO | MR | 7 | 2025 |
| Heptachlor epoxide | MR | 7 | 2025 |
| 2,4-D | MR | 7 | 2025 |
| 2,4,5-TP | MR | 7 | 2025 |
| Chlordane | MR | 7 | 2025 |
| BHC-GAMMA | MR | 7 | 2025 |
| Dinoseb | MR | 7 | 2025 |
Violation Count vs. the National Corpus
Grantsville City has 382 recorded EPA violations, 93% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 7% carry more. 4% of this system's own violations are health-based (17 of 382), and it ranks #3,777 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)
382 Higher than most more violations than 93% 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
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 290 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFUnA | 6/9/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHpS | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 6/9/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 6/9/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 6/9/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 6/9/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 6/9/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 6/9/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| HFPO-DA | 6/9/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 6/9/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTA | 6/9/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 6/9/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 6/9/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 6/9/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFHpA | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 6/9/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxS | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 6/9/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFOS | 6/9/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 6/9/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 6/9/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 4/26/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 9Cl-PF3ONS | 4/26/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| NMeFOSAA | 4/26/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 4/26/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 4/26/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 4/26/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFMBA | 4/26/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 4/26/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 4/26/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 4/26/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 4/26/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 4/26/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 4/26/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFDoA | 4/26/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| ADONA | 4/26/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 4/26/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 4/26/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxA | 4/26/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 4/26/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 4/26/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 4/26/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
Population served record for Grantsville City
EPA SDWIS lists 13,400 people served and 4,318 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
382 violations · 13,400 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 similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Grantsville City
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Utah compares on the same EPA violation measures. Utah 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.