'Tis
the season for CCRs
or AWQRs as July 1 deadline approaches;
utility approaches vary, compliance issues are
highlighted. Flushing
daily is part of lead-control strategy
in Ontario, Canada... for schools. Treat-and-use
strategy gets a new look in California
for perchlorate
"clean up."
Two more membrane
WTPs make
debuts. Norovirus identified
as culprit in Wisconsin illness
from well water.
Idaho
city works with state to bring down
arsenic levels (Magic
Valley Times-News, June 6); Twin
Falls' new CCR (PDF file, 258 K) Commentary: The
media's take on the city getting an extended
compliance date (2011) from the state
is to make it look like the city is
10 years late. And... who
knew that Idahoans use more water than
any other state's citizenry?
Ontario
outlines action plan to address lead in water issues Commentary:
The plan sets in motion a number of
new initiatives including rules on
sampling, adjusting water quality
for corrosion control, help
with lead line replacement,
etc., and a regulation requiring
daily flushing of schools built
before 1990.
Lead
test requests deluge Toronto (Toronto Globe and Mail,
June 9) Commentary:
Toronto has had a program for free
testing of homes for some time
and has been replacing lead service
lines at the rate of 3500 per year.
In the latest testing reported,
less than 10% of homes with
lead services exceeded the
limit.
Study
finds perchlorate in U.S. southwest may have natural origins (Environmental
Science and Technology, June 6) Commentary:
The interpretations
of this study
(which has
been reported earlier)
are varied, but the one
from the DOD is not unexpected: "Shannon
Cunniff, director of
DOD’s Emerging Contaminants
Office, says the
new work
is 'increasing
the body of evidence
that perchlorate levels that are relevant to public
health can exist naturally. Especially in these arid
and semiarid
regions, one can no longer
assume that DOD activities are the source of perchlorate'.”
Water
Treatment Residuals: From Troublesome Sludge to Desirable
Commodity Malcolm
Pirnie offers specialty
services to assist utilities in managing
water treatment residuals (WTRs). We can assist utilities
with recycle audits, Filter Backwash Recycle Rule (FBRR)
compliance, arsenic residuals management, selection of
innovative dewatering methods, and optimization of existing
WTR facilities. Most importantly, we can help utilities
determine the unique chemical and physical characteristics
of their WTR, evaluate and recommend options, and establish
a viable beneficial use program.
Malcolm
Pirnie offers specialty
services to assist utilities in managing
water treatment residuals (WTRs). We can assist utilities
with recycle audits, Filter Backwash Recycle Rule (FBRR)
compliance, arsenic residuals management, selection of
innovative dewatering methods, and optimization of existing
WTR facilities. Most importantly, we can help utilities
determine the unique chemical and physical characteristics
of their WTR, evaluate and recommend options, and establish
a viable beneficial use program.