Finished Water
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A PHOTOGRAPHIC PROFILE
The new municipal water treatment plant in Lynden,
Wash., ensures reliable water supply for the city and
has the capacity to provide water to nearby systems
that have high nitrate levels.
Lynden, Wash. (population 12,900), which
lies in Whatcom County, near the Canadian
border, was established in 1874. The city’s
existing 1926 water treatment plant was
saddled with significant code and structural defects. The undersized facility was
unable to meet peak day water demands,
requiring the city to rely on water storage.
Occurrences of extended peak demand
threatened to exhaust the city’s storage
capacity, leading to service disruptions.
By 2011, the Washington State
Department of Health issued a letter
demanding the city obtain funding and
complete construction of a new water
treatment plant to comply with regulatory requirements and meet demand.
Construction began in July 2013.
36 Opflow December 2015
The new 19,000-ft2 facility provides an
additional level of treatment for Cryptosporidium, produces water that meets current
regulations, and allows for future growth.
Treatment Plant
Operator: City of Lynden, Wash.
Construction Manager: Kennedy-Jenks
Designer: Stantec Engineering
Completion Date: September 2015
Water Source: Nooksack River
Technology: Conventional treatment, including grit removal, dewatering room, rapid
mix, flocculation and sedimentation basins,
dual-media deep-bed filters, ultraviolet disinfection, clearwell, finished water pumping,
backwash water equalization tank, sludge
thickener, and on-site chlorine generation
for secondary distribution disinfection.
Project Cost: $28 million, including funding
from the Washington State Drinking Water
State Revolving Fund, a Public Works Board
Trust Fund loan, US Department of Agriculture loan, a Whatcom County Economic
Development Incentive program loan and
grant, and internal funds.
Service: 8 mgd initially, with expansion to
12 mgd available
Awards or Special Features: The new plant
nearly tripled the capacity of the city’s existing facility. The facility now complies with
the US Long-Term 2 Enhanced Surface Water
Treatment Rule and Stage 2 Disinfectants
and Disinfection By-Products Rule.
2015 © American Water Works Association
www.awwa.org/opflow
PROJECT SPECIFICS
Project Name: Lynden Water
PHOTOGRAPHS: STANTEC CONSULTING SERVICE
NEW WATER TREATMENT PLANT GROWS CAPACITY, ENSURES COMPLIANCE