groundwater quality of clinton county, pa · 54 wells were sampled in clinton county to...
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John Clune Charles Cravotta
Groundwater Quality of Clinton County, PA
Water (flooding, water quality, etc.)
Geology (resources, earthquakes, etc..) Geography (topo maps, spatial, etc.)
Biology (mammals, fish, etc.)
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The USGS provides unbiased, objective, and impartial scientific information to resource managers, planners, and other entities
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National Research
Cooperative Research
USGS Science
Stream GageTowandaObservation Well
Bradford Co
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Introduction
Introduction Problem/Need
Private land owners, local communities, conservation groups, consultants and natural resource agencies need a characterization of current chemical quality conditions of groundwater and to better assess natural and anthropogenic influences on local aquifers.
Introduction Problem/Need
Lack of Data
Before 2011 After 2011
Pike
Co.
Filling
Data Gaps Lycoming
Co.
Wayne
Co.
Bradford Co.
Potter
Co.
Clinton
Co.
Pike
Co.
www.usgs.govIntroduction County Groundwater Studies
County groundwater baseline studies ongoing/funded (green), proposed (yellow) and the remaining counties of research interest (gray) for the development of a regional groundwater quality.
The purpose of this presentation is to provide a (1) drinking water health standards comparison and (2) a chemical analysis of groundwater and for 54 Domestic Wells in Clinton County, Pennsylvania
ClintonCounty
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Study Area
Study Area Groundwater
The geology of Clinton County consists of bedrock (gray), limestone (white) and sand/gravel (yellow) in the valleys.
Private wells pump up groundwater that has picked up dissolved constituents (minerals, etc.) over short and long flowpaths.
Study Area Geology/Wells
Private Domestic Well
Study Area Land Use
Forest
Agriculture
Urban/Suburban
Oil & Gas Development
Study Area Private Water Supply
Bacteria
Copper/Lead
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Methods
Selection/SamplingMethods
Randomized Design Well Construction Verification
Lab AnalysisSampling
54 Cells
Wayne County Lycoming
County
Pike County
Clinton County
PotterCounty
Bradford County
Well Construction
Well D
epthWater
BearingZone
Op
en H
ole
Casin
g
Clinton County
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Drinking Health Standard Comparison
Drinking Water Standards
MCL
SMCL
Arsenic (ug/L)
0 MCLG/AL
Iron (ug/L)USEPA Drinking Water Standards were developed to ensure safe water for public water supplies and can be used as a guide for private domestic wells.
Maximum Contaminant Levels are set because elevated concentrations of these constituents may cause adverse health effects
Maximum Contaminant Level Goals concentrations above these levels may pose adverse health effects, but are limited by the detection or treatment methods available
Secondary Maximum Contaminant Levelsare set for aesthetic reasons and elevated concentrations of these constituents may impart an undesirable taste or odor to water
Inorganics Total Dissolved Solids
Freshwater
Brackish
Seawater
Total Dissolved Solids
Inorganics Total Dissolved Solids
SMCL = 500 mg/L
Inorganics pH/Alkalinity
Seawater
pH Alkalinity
Corrosive
Scale Forming
Inorganics pH/Alkalinity
Seawater
6.5 8.5
16 37 1
Neutral BasicAcidic
pH
Alkalinity (mg/L)
Low Moderate High
8 36 10
20 160
SMCL
1 14
* All graphics are provisional until verified and analyzed for publication
Inorganics Majors Ions/Metals
Nutrients
Major Ions
Trace Metals
Inorganics Majors Ions/Metals
Similar to results in other counties
Inorganics Majors Ions/Metals
* All graphics are provisional until verified and analyzed for publication
Arsenic (ug/L)
MCL
<
Lead (ug/L)
<
MCL
* Raw Water
Inorganics Majors Ions/Metals
* All graphics are provisional until verified and analyzed for publication
Often associated with nuisance bacteria
Bacteria
BacT
Bacteria
* All graphics are provisional until verified and analyzed for publication
Total Coliform
Bacteria
v
Total Coliform
Fecal Coliform
vE-coli
* All graphics are provisional until verified and analyzed for publication
Bacteria/Nitrate
* All graphics are provisional until verified and analyzed for publication
Nitrate (mg/L)
MCL
<
Total Coliform (MPN/100 ml)
<MCL
Total Coliform
Nitrate
Bacteria/Nitrate
Radiochemicals
Radchems
Radon Gas
Radium
Uranium
RadiochemicalsR
ado
n-2
22
(p
Ci/
L)
Samples
Recommended MCL
Dissolved Hydrocarbon Gases
Gases
Dissolved Hydrocarbon Gases
Propane (mg/L)< 0.02 mg/L
Ethane (mg/L)< 0.5 mg/L
* All graphics are provisional until verified and analyzed for publication Thermogenic
Biogenic
Volatile Organic Compounds (VOCs)
VOCs
VOCs
3726 Results
2 Detections
54 samples
.
.
Each sample was analyzed for 69 different VOCs
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Chemical Analysis of Groundwater
Interpretive Analysis & Report
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Summary
Summary
pH Alkalinity
Nutrients
Major Ions
Trace Metals
VOCs Gases
BacT
Radchems
54 wells were sampled in Clinton County to characterize the quality of the groundwater
Exceedances for MCLs (Total Coliform, E-coli, Nitrate, pH and Arsenic) and SMCLs (TDS, Chloride, Aluminum , Iron, and Manganese) along with the results for radiochemicals, dissolved gases and VOCs were consistent with values from other county studies
A detailed chemical analysis and interpretation of the results will be published in a USGS report
Results indicate generally a good quality of groundwater (well water) throughout Clinton County
For More Information
https://pa.water.usgs.gov/preview/projects/groundwater/domestic_wells/
Partners
This study could not have been possible without the voluntary cooperation of the 54 well owners of Clinton County and the support of the following partners: