C53/100
OASIS MHP — Water Quality Report 2026
Serving 3,000 people · Illinois
Water Source
Groundwater
County
—
System ID
IL0315185
Violations
23
Contaminant Test Results
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: September 1, 2021 – August 31, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: September 1, 2021 – August 31, 2022Rule: Stage 2 DBPREnforcement: 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 OASIS MHP
Is OASIS MHP water safe to drink?
OASIS MHP water receives a grade of C (53/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 23 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has OASIS MHP detected?
1 contaminants were tested in OASIS MHP's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does OASIS MHP have any EPA violations?
Yes, OASIS MHP has 23 EPA violation(s) on record, with the most recent in 2021. Violation types include MR, Other, MCL. 6 are health-based violations.
How many people does OASIS MHP serve?
OASIS MHP serves approximately 3,000 people, Illinois.
What type of water does OASIS MHP provide?
OASIS MHP sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL0315185.
How does OASIS MHP compare to other utilities in Illinois?
OASIS MHP scores 53/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Illinois state page for a full comparison of water systems.