DDW-2024-006488

February 7, 2024
Shawn Douglas
Riverdale City Water System
4600 Weber River Dr
Ogden, Utah 84405
Dear Shawn Douglas:
Subject: Public Drinking Water Requirements for Riverdale City Water System, UTAH29015
According to the Division of Drinking Water ’s records, Riverdale City Water System is a
Community water system that now serves a population of about 8,945 people.
This population change results in the following changes to your system as follows:
Bacteriological Sampling
The total number of bacteriological samples this system is now required to take is 10 samples
each month. It is still your responsibility to send a copy of all results to our office by the 10th
of the following month. In the event of a coliform positive result, you are required to take three
repeat samples and a triggered source E.coli sample for each ground water source in service at
the time of the original positive sample. The system is required to submit an updated written
sample site plan that identifies sampling sites and sample collection schedules that are
representative of water throughout the distribution system. For any questions regarding the Total
Coliform rule or Groundwater rule, contact Sitara Federico at [phone] or
[e-mail]. This new sample schedule will take effect on May 1, 2024 .
195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144830 • Salt Lake City, UT 84114-4830
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Shawn Douglas
Page 2 of 2
A current monitoring schedule for your system has been enclosed. If this letter is in error please
contact me at [phone] or [e-mail] within 30 days. Thank you for your efforts
in maintaining a safe drinking water system.
Sincerely,
Mark Berger
Monitoring and Standards Section Manager
Enclosure: Monitoring Schedule
Revised Total Coliform Rule (RTCR) Sample Site Plan
cc: Shawn Douglas, [e-mail]
Scott Braden, Weber - Morgan Health Department
Sitara Federico
https://waterlink.utah.gov/reports.html?systemId=1260 1/2
Contacts
Type: Administrative Contact
Name: SHAWN GARY DOUGLAS
Office: 801-394-5541
Emergency:
Email:
[e-mail]
[e-mail]
Site Information
Legal Contact: RIVERDALE CITY
Address: 4600 WEBER RIVER DR ,
OGDEN, UT 84405
Phone: [phone]
County: WEBER COUNTY
System Type: Community
Certification Required: D3
Total Population: 8945
Site Updates
Last Inventory Update: 10/05/2023
Last Surveyor Update: 06/22/2023
Surveyor: CAMERON LEHI
DRANEY
Operating Period: 1/1 - 12/31
Last IPS Update: 03/07/2024 14:10:00
Political Districts
Representative: 11
Senate: 18
Water Usage Information per ERC
Total Ips Points: 0
Public Water System Water Monitoring ReportDEQ | Drinking Water
Riverdale City Water System PWS ID: UTAH29015 Rating: Approved 03/11/1980 Status: Active

BACTERIOLOGICAL MONITORING
Sample Count Type Frequency Schedule Begin Schedule End Analyte Name
9 Routine Monthly 01/01/1991 COLIFORM (TCR)
DISINFECTION BYPRODUCT STAGE 2 MONITORING
Sample Count Type Frequency Sample Label
2 Routine Quarterly UTAH29015 DS001 Sample ID below
Sample ID Site Last Sampled Next Sample Due
MR201 527 S 575 W 09/07/2023 01/01/2024-03/31/2024
MR001 3800 S 600 W 09/07/2023 01/01/2024-03/31/2024
Sample during the following months: December, March, June, September
OTHER DISTRIBUTION MONITORING
Analyte Name ID Sample Count Type Frequency Last Sampled Next Sample Due
LEAD AND COPPER DS001 20 Routine 3 Years 07/2021 06/01/2024-09/30/2024
ASBESTOS DS001 1 Routine 9 Years 04/2021 01/01/2029 - 12/31/2037
CHLORINE RESIDUAL MONITORING
ID Facility Name Sample Count Type Frequency Last Sampled Next Sample Due
DS001 UTAH29015 DISTRIBUTION SYSTEM 12 Routine Monthly --
https://waterlink.utah.gov/reports.html?systemId=1260 2/2
MONITORING REQUIREMENTS BY FACILITY
¹To fulfill the two pesticide sample requirements, systems are to submit the second pesticide sample in the quarter following the quarter in which the first sample was
collected.
ID Name Facility Details
WS003 5190S 1050W #1 WELL Hide Details
Name Sample Required Type Frequency Last Sample Next Sample Due
INORGANICS & METALS 1 Routine 9 Years 08/09/2018 01/01/2020 - 12/31/2028
NITRATE 1 Routine Yearly 09/12/2023 01/01/2024 - 12/31/2024
PESTICIDES¹2 Routine 3 Years 11/15/2023 01/01/2026-12/31/2028
RADS - COMPLIANCE 1 Routine 6 Years 06/08/2020 01/01/2026 - 12/31/2031
SULFATE,SODIUM,TDS 1 Routine 9 Years 08/09/2018 01/01/2020 - 12/31/2028
VOLATILE ORGANICS 1 Routine Yearly 09/07/2023 01/01/2024 - 12/31/2024
GROUPED SOURCE SAMPLING STATIONS
Sample Group ID Sample Group Facility Details
OPEN COMPLIANCE SCHEDULES
Type Required Activities Severity Created Due
Lead Copper Rule Revisions COMPLETE INITIAL LSL INVENTORY 12/16/2021 10/16/2024
Lead Copper Rule Revisions SUBMIT LEAD SERVICE LINE INVENTORY 12/16/2021 10/16/2024
CCR SCHEDULES Submit Consumer Confidence Report 01/01/2024 07/01/2024
CCR SCHEDULES Submit CCR Certification Letter 01/01/2024 10/01/2024
Utah Division of Drinking Water
Bacteriological Sample Site Plan
All public water systems are required under the Revised Total Coliform Rule (RTCR) to submit a Bacteriological
Sample Site Plan. The purpose of the wrien sample site plan is to ensure the collecon of samples from points in
the distribuon system that best represent the quality of water served to customers, to idenfy repeat sampling
locaons, and to establish a sampling schedule.
What to include in the plan:
1. The following should be submied for the Bacteriological Sample Site Plan:
a. The plan must include a MAP of the distribuon system. Excepons are small systems such as
restaurants, schools, office buildings, and some small industries.
b. Bacteriological Sample Site Plan form.
2. The map should show locaons of all distribuon lines, sources, treatment, storage tanks and sampling
sites. Idenfy each sampling site by street address and a numeric point code. Give a brief descripon of
the site. For example: 201 Main Street, 1. DS001, outside house tap, or Maintenance Facility, 1. DS001,
men’s restroom sink. The sampling site Numeric Point Code should begin with the number 1 and then
connue in sequenal numeric order. Use the numeric point code, along with DS001, when subming
samples to the laboratory.
3. Locate sample sites so they represent all areas of the distribuon system. You may wish to include
comments on your plan showing the reason(s) for selecng each site. Such as populaon density,
industrial areas, pressures zones, areas vulnerable to potenal contaminaon, dead-end lines, and
purchased source entry points. Alternate sampling locaons through different locaons of the water
system.
4. Do NOT indicate the raw water tap or sources as sampling sites for roune or repeat coliform samples.
These are “triggered source” sampling locaons under the Groundwater Rule (GWR). Indicate the
associated source (by DDW assigned source codes) for each sample locaon. For example: “WS001”,
“WS002 and WS004”, or “All Sources” supply this specific locaon.
5. Include the locaon for “Repeat ” sample sites. Repeat samples must be collected at the following
locaons within 24 hours of a total coliform or E coli posive sample:
- The tap where the original posive coliform sample was collected,
- A tap within five (5) service connecons upstream, and
- A tap within five (5) service connecons downstream.
6. Alternave fixed repeat locaons may be idenfied at locaons that best verify and determine the extent
of potenal contaminaon in the distribuon system based on a specific situaon.
7. For system with only one or two service connecons (suitable sampling taps), collect all three repeat
samples in one day from the limited number of sampling taps. The sample site plan should show which
taps(s) are in use for mulple samples.
8. The number of roune coliform samples collected each month is based on the populaon of the water
system. For a table indicang the number of samples required see Secon R309-210-5.
9. Include a schedule for selecon of the samples. Systems using only groundwater and serving less than
4,900 people (five samples required per month or fewer) may collect all required sample on a single day.
Systems with greater than five samples per month must collect a poron of the samples at regular
intervals throughout the month with the total number being the number required.
revised 2/3/2021
S UBMITTAL
Mail the completed form to:
Or Email:
Division of Drinking water
An: Sitara Federico
195 N 1950 W
PO BOX 144830
Salt lake City, UT 84114
[e-mail]
This applicaon and related environmental informaon are available online: DrinkingWater.utah.gov
revised 2/3/2021
Bacter iolo gical Sample Site Plan
B ASIC W ATER S YSTEM I NFO
Water System Name: Water System #:
S ITE S ELECTION I NFO
Monthly Roune Sample Sites (mark an “X” in boxes below): Follow-up/Repeat Sample (range
or specific address)
DDW Assigned #
for Associated
Roune Sample Point
Descripon
(horse bib, sink faucet, etc.) Address Point
ID
JA
N
FE
B
MA
R
AP
R
MA
Y
JU
N
JU
L
AU
G
SE
P
OC
T
NO
V
DE
C
1-DS00
1 Down Up
2-DS00
1 Down Up
3-DS00
1 Down Up
4-DS00
1 Down Up
5-DS00
1 Down Up
6-DS00
1 Down Up
S OURCE INFO
C ERTIFICATION
Samples Collected by: Plan Submitted by: Date Submitted:
revised 2/3/2021
Source(s) Name: DDW Source
or Group # Bacteria Sampling Laboratory Information:
Laboratory:
Address:
City:
Zip Code:
Phone
Number:
Contact Name:
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