Nephi City
EPA ID: UTAH12003 · 7,122 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Nephi City (UTAH12003): 21 violations on record since 2021. Looking at the EPA enforcement file for Nephi City, 21 violations are listed in the dataset, and none is recorded as open for the 7,122 people in its service area.
Data: EPA SDWIS
Service Area Map
Coverage area for Nephi City Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Nephi City have a median household income of $97,708 and about 7,289 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 59% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 50% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Nephi City's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Utah
System Overview
Nephi City (EPA ID: UTAH12003) is a community water system in Utah that serves approximately 7,122 people from groundwater sources.
This system serves ZIP code 84648 in Nephi.
Violation History
Status breakdown for accepted records with record years 2021-2026: 21 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| January 1, 2022 | 1,2,4-Trichlorobenzene | Non-health-based | Resolved |
| January 1, 2022 | cis-1,2-Dichloroethylene | Non-health-based | Resolved |
| January 1, 2022 | Xylenes, Total | Non-health-based | Resolved |
| January 1, 2022 | DICHLOROMETHANE | Non-health-based | Resolved |
| January 1, 2022 | o-Dichlorobenzene | Non-health-based | Resolved |
| January 1, 2022 | p-Dichlorobenzene | Non-health-based | Resolved |
| January 1, 2022 | Vinyl chloride | Non-health-based | Resolved |
| January 1, 2022 | 1,1-Dichloroethylene | Non-health-based | Resolved |
| January 1, 2022 | trans-1,2-Dichloroethylene | Non-health-based | Resolved |
| January 1, 2022 | 1,2-Dichloroethane | Non-health-based | Resolved |
| January 1, 2022 | 1,1,1-Trichloroethane | Non-health-based | Resolved |
| January 1, 2022 | Carbon tetrachloride | Non-health-based | Resolved |
| January 1, 2022 | 1,2-Dichloropropane | Non-health-based | Resolved |
| January 1, 2022 | Trichloroethylene | Non-health-based | Resolved |
| January 1, 2022 | 1,1,2-Trichloroethane | Non-health-based | Resolved |
| January 1, 2022 | Tetrachloroethylene | Non-health-based | Resolved |
| January 1, 2022 | CHLOROBENZENE | Non-health-based | Resolved |
| January 1, 2022 | Benzene | Non-health-based | Resolved |
| January 1, 2022 | Toluene | Non-health-based | Resolved |
| January 1, 2022 | Ethylbenzene | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| 1,2,4-Trichlorobenzene | Monitoring & Reporting | 1 | No |
| cis-1,2-Dichloroethylene | Monitoring & Reporting | 1 | No |
| Xylenes, Total | Monitoring & Reporting | 1 | No |
| DICHLOROMETHANE | Monitoring & Reporting | 1 | No |
| o-Dichlorobenzene | Monitoring & Reporting | 1 | No |
| p-Dichlorobenzene | Monitoring & Reporting | 1 | No |
| Vinyl chloride | Monitoring & Reporting | 1 | No |
| 1,1-Dichloroethylene | Monitoring & Reporting | 1 | No |
| trans-1,2-Dichloroethylene | Monitoring & Reporting | 1 | No |
| 1,2-Dichloroethane | Monitoring & Reporting | 1 | No |
| 1,1,1-Trichloroethane | Monitoring & Reporting | 1 | No |
| Carbon tetrachloride | Monitoring & Reporting | 1 | No |
| 1,2-Dichloropropane | Monitoring & Reporting | 1 | No |
| Trichloroethylene | Monitoring & Reporting | 1 | No |
| 1,1,2-Trichloroethane | Monitoring & Reporting | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0029 mg/L | No | 2024-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
1 of 1 ZIP records with known zones is in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by UT or modeled from parcel and building-footprint data.
- 84648 - Nephi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Nephi City (UTAH12003) on EPA.gov.
Frequently Asked Questions
Is Nephi City water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Nephi City; its 21 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Nephi City serve?
Nephi City serves approximately 7,122 people across 1 ZIP code in Utah.
Where does Nephi City get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
- #23 / 49 Highest Exposure Burden (Utah)
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Nephi City (UT): 21 EPA Violations. https://zipcheckup.com/water-system/utah12003/
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title = {{Nephi City (UT): 21 EPA Violations}},
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url = {https://zipcheckup.com/water-system/utah12003/}
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What You Can Do
Test your water
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Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Nephi City (EPA ID: UTAH12003) - request the latest Consumer Confidence Report or ask about specific contaminants.