A91/100
ROLLA PWS — Water Quality Report 2026
Serving 20,800 people · Missouri
Water Source
Groundwater
County
—
System ID
MO3010700
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – December 6, 2021Enforcement: Resolving — corrective action underway
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 ROLLA PWS
Is ROLLA PWS water safe to drink?
ROLLA PWS water receives a grade of A (91/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ROLLA PWS detected?
66 contaminants were tested in ROLLA PWS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does ROLLA PWS have any EPA violations?
Yes, ROLLA PWS has 2 EPA violation(s) on record, with the most recent in 2021. Violation types include Other, MCL. 1 are health-based violations.
How many people does ROLLA PWS serve?
ROLLA PWS serves approximately 20,800 people, Missouri. The system provides water to 1 community: Rolla.
What type of water does ROLLA PWS provide?
ROLLA PWS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MO3010700.
How does ROLLA PWS compare to other utilities in Missouri?
ROLLA PWS scores 91/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Missouri state page for a full comparison of water systems.