Slide 1

Report
Pasadena Water and Power
PUBLIC HEALTH GOALS
City Council
Public Hearing
August 16, 2010
Public Health Goals (PHGs)
Pasadena Water and Power
WHAT ARE PHGs?
•
Set by the California Office of Environmental Health
Hazard Assessment (OEHHA) which is part of
California EPA
•
Based solely on public health risk considerations
•
Detection capability, availability of treatment
technology, benefits and costs are not considered
•
Are not enforceable and not required to be met
PHG vs. Consumer Confidence
Report (CCR)
Pasadena Water and Power
PHG Report

Required every 3 years

Level of a contaminant in
drinking water, that does
not pose a health risk if
consumed for a lifetime.
•
•
CCR Report

Required annually

Drinking water regulatory
standards

Contaminants present, but
at levels below the drinking
water standards (MCLs)
Includes information on
source water

Levels of any detected
contaminants
Technology for removal, if
any, and associated cost

PWP’s compliance with
drinking water regulations
Constituents Detected That Have
Exceeded a PHG or a MCLG
Pasadena Water and Power
The constituents listed below have exceeded a
PHG or a MCLG at one or more of the City’s
sources.
Trichloroethylene (TCE)
Tetrachloroethylene (PCE)
Total Coliform Bacteria
Nitrate
Fluoride
Perchlorate
Lead/Copper
Arsenic
Uranium
Gross Alpha
The water from these sources have been
blended with other sources of water to meet all
applicable water quality standards before being
delivered to customers.
Acronyms
Pasadena Water and Power
•
PHG
Public Health Goal. The level of a
contaminant in drinking water below which
there is no known or expected risk to
health. Set by Cal-EPA.
•
MCL
•
MCLG
Maximum Contaminant Level. The highest
level of a contaminant that is allowed in
drinking water. Primary MCLs are set as
close to the PHGs (or MCLGs) as is
economically and technologically feasible.
Maximum Contaminant Level Goal - The
level of a contaminant in drinking water
below which there is no known or expected
risk to health. MCLGs are set by the
U.S. Environmental Protection Agency.
Conclusion
Pasadena Water and Power
•
The drinking water quality of the City of
Pasadena meets all State and Federal drinking
water standards set to protect public health.
•
To further reduce the contaminant levels to
meet the PHGs would require additional costly
treatment processes.
•
No action is proposed.
Constituents Detected That Have
Exceeded a PHG or a MCLG
Pasadena Water and Power
Chemical
PHG / MCLG
(mg/L)
MCL
(mg/L)
Range of Detections
(mg/L)
Trichloroethylene
(TCE)
0.0017
0.005
0.0048 - 0.00923
Tetrachloroethylene
(PCE)
0.00006
0.005
0.0005 - 0.005
Total Coliform
Bacteria
0 MCLG
5%
0.75-1.5%
Nitrate
45
45
45.5 **
Fluoride
1
2
0.42- 1.57
Perchlorate
0.006
0.006
0.006-0.0132
Lead / Copper*
0.0002 / 0.3 *
0.015 / 1.3
< 0.005/ 0.170
Arsenic
0.000004
0.01
0.001-0.002
Uranium
0.43 picoCuries/L
20
2.0 -17.0
Gross Alpha
0 MCLG
15pci/L
3-16pci/L **
* 90th percentile of the samples collected cannot exceed the action level.
** Copelin Well

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