Live Updated 16 min ago
5min
current ed wait
17 min shorter than usual
16 min
avg today
22 min
avg overall
148 min
longest seen
Typical wait for non-urgent cases. Patients are seen in order of clinical priority. The most seriously ill are always seen first, no matter how busy the ER is.
Refreshing in 5:00
Source: Trinity Health · auto-refreshed every 30 min · details
Life-threatening symptoms? Call 911. Don't rely on this site to make that decision.
Wait time, last 24 hours
Under 30 min 30 - 60 min Over 60 min Typical next few hours
Typical wait by hour of the day

Average wait at each hour, across every reading we have.

Hour-by-hour breakdown
HourAvg. waitTrend
Today, 1 AM
avg. of 1 reading
5 min steady
Today, 12 AM
avg. of 2 readings
4 min falling
Yesterday, 11 PM
avg. of 2 readings
30 min falling
Yesterday, 10 PM
avg. of 2 readings
52 min rising
Yesterday, 9 PM
avg. of 2 readings
45 min rising
Yesterday, 8 PM
avg. of 2 readings
24 min falling
Yesterday, 7 PM
avg. of 2 readings
38 min rising
Yesterday, 6 PM
avg. of 2 readings
22 min rising
Yesterday, 5 PM
avg. of 2 readings
3 min falling
Yesterday, 4 PM
avg. of 2 readings
8 min falling
Yesterday, 3 PM
avg. of 2 readings
24 min rising
Yesterday, 2 PM
avg. of 2 readings
9 min falling
Yesterday, 1 PM
avg. of 2 readings
16 min rising
Yesterday, 12 PM
avg. of 2 readings
6 min steady
Yesterday, 11 AM
avg. of 2 readings
7 min rising
Yesterday, 10 AM
avg. of 2 readings
4 min falling
Yesterday, 9 AM
avg. of 2 readings
16 min rising
Yesterday, 8 AM
avg. of 2 readings
10 min falling
Yesterday, 7 AM
avg. of 2 readings
27 min rising
Yesterday, 6 AM
avg. of 2 readings
16 min rising
Yesterday, 5 AM
avg. of 2 readings
0 min falling
Yesterday, 4 AM
avg. of 2 readings
3 min falling
Yesterday, 3 AM
avg. of 2 readings
6 min rising
Yesterday, 2 AM
avg. of 2 readings
3 min -
Visit Black Hawk County
Address
3421 WEST NINTH STREET
Waterloo, IA 50702
Phone
Voluntary non-profit - Church
HoursOpen 24/7 Websitemercyone.org
Facilities & services
423
total beds
11
operating rooms
General acute care
facility type
Emergency & critical care
Dedicated ERICUEmergency psych
Imaging
CTMRIDiagnostic radiology
Surgery
Inpatient surgeryCath labAnesthesiology
Other services
ChemotherapyInpatient rehabAlcohol & drugPharmacy
Accessibility & amenities
Wheelchair-accessible entrance Wheelchair-accessible parking Medication disposal Apple Pay / Google Pay
ER performance
Typical ER visit length
Median time from arrival to leaving.
3 hr 51 min of 358 patients
Mental-health ER visit length
Mental health visits usually run longer (safety screening).
4 hr 8 min of 25 patients
Patients who left before being seen
Walked out before being seen, usually due to long waits.
10% of 15,611 visits
Head CT scan time for stroke
Time from arrival to head CT for suspected stroke. Faster is better.
1 hr 4 min of 11 patients
Compared to other US hospitals
Patient safety
Rates of infections, clots, falls and surgical complications during a stay.
Above average
Avoiding readmission
Patients returning within 30 days for the same condition.
Above average
Infection rates lower is better
Central-line bloodstream infections
Bloodstream infections from a central IV line. Known as CLABSI.
- About average
0.49 1.00 = national avg
Catheter urinary-tract infections
UTIs from a urinary catheter. Known as CAUTI.
Better than average
0.17 1.00 = national avg
Colon surgery site infections
Wound infections after colon surgery.
- About average
2.03 1.00 = national avg
MRSA bloodstream infections
Drug-resistant staph in the bloodstream.
- About average
0.48 1.00 = national avg
C. diff (intestinal) infections
Gut infections, often after antibiotics.
Better than average
0.51 1.00 = national avg
What patients say
Overall HCAHPS rating
Hospital rating
64% rated 9 or 10 of 10
64%
Would recommend
64% would definitely recommend
64%
Nurse communication
74% said nurses always communicated well
74%
Doctor communication
75% said doctors always communicated well
75%
Cleanliness
69% said the room was always clean
69%
Quietness at night
56% said the area was always quiet at night
56%
Clinicians on staff
357
total clinicians
8
ER physicians
By specialty
Radiology 43
Anesthesiology 20
Internal medicine 20
Obstetrics / gynecology 7
General surgery 6
Neurology 5
Hematology / oncology 5
Orthopedic surgery 5
Cardiology 4
Pulmonology 4
Interventional radiology 3
Where this number comes from

Trinity Health publishes this wait time on its website, mychart.trinity-health.org . We check it about every 30 minutes and show you the most recent number.

  • What it means: How long someone arriving right now would likely wait to see a doctor.
  • Last updated: 1:22am on 11 Jun 2026 (hospital local time)
Frequently asked questions
How long is the wait at Mercyone Waterloo Medical Center?

The most recently published wait at Mercyone Waterloo Medical Center is 5 minutes, as of 1:22am hospital local time. The all-time average for this ER is around 22 minutes. Wait times change quickly , call the ER to confirm before you travel.

Should I go to the ER or to urgent care?

For life-threatening symptoms , chest pain, stroke signs (face drooping, arm weakness, speech difficulty), severe bleeding, breathing difficulty, or loss of consciousness , call 911 and head to the ER. For minor injuries, fevers, low-grade illness, or anything non-emergency, urgent care is usually faster and cheaper. See urgent care in Iowa.

Is Mercyone Waterloo Medical Center open 24 hours?

Most Medicare-certified ERs in the US run 24 hours a day, seven days a week. To confirm the current status of Mercyone Waterloo Medical Center, call (319) 272-8000.

Where is Mercyone Waterloo Medical Center located?

Mercyone Waterloo Medical Center is located at 3421 West Ninth Street, Waterloo, IA, 50702. Phone: (319) 272-8000.