F0/100
NEWCASTLE, CITY OF — Water Quality Report 2026
Serving 3,595 people · Wyoming
Water Source
Groundwater
County
—
System ID
WY5600256
Violations
184
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About NEWCASTLE, CITY OF
Is NEWCASTLE, CITY OF water safe to drink?
NEWCASTLE, CITY OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 184 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has NEWCASTLE, CITY OF detected?
31 contaminants were tested in NEWCASTLE, CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does NEWCASTLE, CITY OF have any EPA violations?
Yes, NEWCASTLE, CITY OF has 184 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, MCL. 11 are health-based violations.
How many people does NEWCASTLE, CITY OF serve?
NEWCASTLE, CITY OF serves approximately 3,595 people, Wyoming. The system provides water to 1 community: Newcastle.
What type of water does NEWCASTLE, CITY OF provide?
NEWCASTLE, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WY5600256.
How does NEWCASTLE, CITY OF compare to other utilities in Wyoming?
NEWCASTLE, CITY OF scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Wyoming state page for a full comparison of water systems.