nhdes private well strategy private well working group february 16, 2011 paul susca and cynthia...
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![Page 1: NHDES Private Well Strategy Private Well Working Group February 16, 2011 Paul Susca and Cynthia Klevens Drinking Water and Groundwater Bureau N.H. Department](https://reader034.vdocument.in/reader034/viewer/2022042717/56649d695503460f94a478ca/html5/thumbnails/1.jpg)
NHDESPrivate Well Strategy
Private Well Working Group
February 16, 2011Paul Susca and Cynthia Klevens
Drinking Water and Groundwater BureauN.H. Department of Environmental Services
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Private Wells40%
PWS GW23%
PWS GW & Surface
14%
PWS Surface23%
N.H. Domestic Water Supply Sources
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Private Wells in N.H.
Serve 37 – 44% of residents Water quality not regulated by
State (“unsatisfactory water test” disclosure)
Rarely tested as recommended Exposure to natural contaminants
a significant issue: Est. 33% > 4,000 pCi/L state rec.
action level Rn Est. 95% > 300 pCi/L proposed
fed. MCL Rn Est. 20% > 10 ppb MCL As Est. 7% > 30 ppb MCL U
Yield an issue for 3%-9% of wells Impact of withdrawals a concern in
some areas
Prevalence ofCommon Contaminants in NH Private Wells
0%10%20%30%40%50%60%70%80%90%
100%
Radon - ProposedEPA MCL (300
piC/L)
Radon - ProposedEPA AMCL (4,000
piC/L)
Arsenic - EPA andDES MCL (10
ug/L)
Uranium - EPAand DES MCL (30
ug/L)
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Well Yield
Complaints regarding yield at new homes Water Well Board recommendation
Minimum: 600 gal/2 hours once/day (5 gpm) Optimum: 960 gal/4 hours (4 gpm)
Based on well completion reports: 3% do not supply minimum 9% do not supply optimum
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Private Well Testing - Overview
Before 2007 Private Well Working Group, 2007-2009
Membership Process Recommendation
Private Well Testing Bill (2010) Model Ordinance Other activities
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Private Well Initiative Before 2007
2000 Strategy Radio PSA Flier and poster (EPA $) distributed thru
Health Officers PSA for town reports
Outreach to towns with high level of contaminants
Presentations Home inspectors Real estate agents
Seminar at DES (2006)
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NHDES Private Well Testing Recommendations
When New well Buying a home Repeat every 3-5 yrs Annually (Basic Analysis) Noticeable changes
What Basic Analysis ($30)
• Bacteria (TC, E coli)• Nitrate & nitrite• Chloride
Standard Analysis ($85)• 14 parameters
Radiological ($80)• Radon• Analytical Gross Alpha
VOCs ($120) Others if indicated
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Private Well Working Group
NH DES NH DHHS US Geological Survey NH Geological Survey Code Enforcement,
Building Inspector UNH Sea Grant &
Cooperative Extension
Home Builders and Remodelers Assoc.
Association of Realtors Water Well Board Well Drillers Plumbing Board Health Officer Assoc. Regional Planning
Commissions
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Working Group - Process
Part of DES Source Water Protection Strategy – updated every 7-10 yrs
October 2007 meeting Review of previous efforts, existing programs,
issues, available data Call for more data, white paper
March 2008 meeting Discussion and voting on policy options
Report and Recommendations 2009
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PWWG White Paper
Private wells serve large and growing portion of population
High levels of natural contaminants affect significant percentage of private wells
Yield of private wells is a health issue Existing state & local programs do not
ensure testing & treatment Eight policy options described
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Existing State Programs DES Private Well Initiative (outreach)
Impact difficult to measure, appears short-lived NH Water Well Board
Licenses drillers and pump installers Addresses well construction, etc.
State Plumbing Code Requires “potable water” Standards not clear
Real Estate Statute requires disclosure of known problems
Housing Standards requires “adequate supply of water” Voluntary certification of water treatment technicians
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Working Group Recommendations
Require testing and disclosure to prospective buyer at R.E. transfer Standard analysis plus rads Disclose available well yield info Opposed by NHAR & HBRANH
Require testing and disclosure to well owner when new well drilled or existing well deepened
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HB 1685 (2010) – The Basics
New wells and deepening of existing wells Pump installer takes sample, sends to lab Lab sends results; pump installed provides results to
owner; owner signs acknowledgement Home sale: prior to executing Purchase & Sale
Seller takes sample, sends to lab• Lab sends results; seller provides results to buyer; buyer
signs acknowledgement OR buyer opts out of testing
Nothing is sent to or filed with DES
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HB 1685, continued
Analysis to be done by accredited labs. No need to test again if home with new
well is sold within one year. Well owner, home buyer may opt in to
sharing data with NH Geological Survey. Enforcement by DES in response to
complaints; licensed pump installers appeal to Water Well Board
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Parameters of Concern
Problems in more than 1% of wells (except Radium due to cost & delay)
Health-related Non-health-related, but
Can render water un-usable: hardness, Fe, Mn, pH, Na, Cl
Affect choice of treatment Inexpensive as a package
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Minority Report N.H. Association of REALTORS
Opposed to point-of-sale mandates due to cost and delay
Notification of known problems already required Standard REALTORS P&S form enables to buyer to
opt into water testing, incl. Radon Concerned about potential fines for sellers Question benefit
Home Builders & Remodelers Assoc. Chilling effect on home sales Shift of responsibility to seller
Both support overall goal; no objection to new well testing
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Private Well Analyses - DES Lab
0
20
40
60
80
100
120
140
160
180
July
06
July
07
July
08
July
09
Sa
mp
les
/Mo
nth
StandardSanitaryRadiologicals
Most Private Well Testing Does Not Include Recommended Health-Based Parameters
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Private Well Analyses - DES Lab
Standard61%
Sanitary28%
Radiologicals11%
July 2006 – September 2009
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American Academy of PediatricsPolicy Statement on Private Wells & Children
Recommendations to government (May 2009) States should require testing when a dwelling is sold,
and results made available to buyer Local governments should provide access to
information about local groundwater conditions and recommendations for testing
Testing should be convenient and free or inexpensive Small community systems should not be routinely
exempted from testing
Meanwhile . . .
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Since PWWG
HB 1685 introduced January 2010 Commerce and Consumer Affairs Subcommittee recommended killing bill in February,
urging DES to work with NHAR Existing wells:
Attempting to engage NHAR on disclosure form Training session for Realtors in September
New wells Mailing info to new well owners Model ordinance - soon to be released
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NHDES Model Ordinance (draft)
Developed for Groundwater Commission – main concerns were adequacy & impact
For building permit or occupancy permit Pumping test (5 hrs) – demonstrate adequacy
(3 gal/min; <150 ft drawdown; <24 hr recovery) Water quality test – disclosure Results to health officer or building inspector
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Model OrdinanceWater Quality Testing Parameters
Total Coliform Bacteria E. Coli Bacteria Nitrate Nitrite Chloride pH Hardness Fluoride Iron Manganese
Sodium Arsenic Uranium Radon Analytical Gross Alpha Copper (stagnant and
purged) Lead (stagnant and
purged) Volatile organic
compounds
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What’s Next
Model ordinanceFinalize, disseminate, publicize
NHAR disclosure form Continue mailings to new well owners Ground Water Awareness Week
March 6-12