The Unsustainable Path of Brockton’s Water Supply
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Transcript of The Unsustainable Path of Brockton’s Water Supply
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THE UNSUSTAINABLE PATH OF BROCKTON’S WATER
SUPPLYPAUL UMANO
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ROLE OF PRINCETON HYDRO
• For-profit organization- mission is to provide ecological consulting services and offer expertise in aquatic engineering. Develop and design appropriate, sustainable solutions.
• July 2013 report on the Brockton Water Supply System (BWS) on behalf of the town of Halifax.
• Larger effort of MA Sustainable Water Management Initiative.
• Mirrored a study conducted by the United States Geological Survey (USGS) on health of our nations streams.
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LEGISLATIVE ACT IN 1899
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IMPLICATIONS: POLLUTANT LOAD ANALYSIS (PLA)
• Water contributes to the vitality of human health; a raw material necessary for agriculture; part of a larger ecosystem that benefits humans. Commons Approach.
• Pollutant Load Analysis assessed:
• Effect of land development/ land use on watersheds
• Nutrient pollution contained in the water
• Phosphorous (P) primarily responsible for adverse water quality- increases algae in water.
• Algae growth produces liver and kidney failure in fish.
• Adverse effects on drinking water- Trihalomethane
• Oxygen depletion to aquatic life.
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PLA: TROPHIC STATE MODELING
• Measurement of biological growth of algae and plants that form the base of an ecosystem.
• Analyses phosphorous in watersheds of Silver Lake, Monponsett Pond, and Furnace Pond.
• To ensure accuracy Princeton Hydro used the average of three models that calculate both hydrology (follow of water) and pollutants.
• Vollenweider (1975)Larson and Mercier (1975)Jones and Bachman (1976)Kirchner and Dillion (1975)
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Silver Lake Monponsett Pond Furnace Pond0.00
0.02
0.04
0.06
0.08
0.10
0.12
Average (P) Federal guidelines (P)
TIME ONE
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Silver Lake Monponsett Pond0.00
0.02
0.04
0.06
0.08
0.10
0.12
Average (P) Federal guidelines (P)
TIME TWO
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Party A (Producer) Party B (Consumer) Party C (third-party)
City of Brockton Water Supply (BWS) -provides water to city
residents
City residents
No cost
Cost
NEGATIVE EXTERNALITIES
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MG of water
Price (to maintain water supply)
C
A
Social Marginal Cost, SMC= PMC + MD
Supply= Private Marginal Cost, PMC
Demand=PMB = SMB
$1.4 billion dollars = Marginal Damage
Q2 Q1
P1
B
Overproduction
Deadweight loss
P2
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REFERENCES