Comment
1. Without predrilling data, it is not possible to comment
on the cause for any water quality problems.
2. Where possible, I have noted situations where elevated
levels of a water quality parameter exists in Pennsylvania .
3. If duplicate analysis provided, I attempted to use the
highest reported value.
5. This is not about cause and effect; it is about a review
of the data.
Well – HW-19
With the exception of the following parameters, the
remaining values were reported as NOT Detected (U)
Anionic Surfactants
– 0.014mg/L – the secondary drinking water standard for foaming agents is 0.5
mg/L. (OK)
Barium – 0.229
mg/L – the primary drinking water standard for barium is 2.0 mg/L –– this does
not suggest any specific impact and barium is typically detectable in
non-saline impacted water at a level of less than 1 mg/L. (OK)
Calcium- 37.6
mg/L (Total)– no specific drinking water standard drinking water standard is
available. (OK)
Chloride – 18.7
mg/L (OK) – drinking water standard is < 250 mg/L – this does not suggest any specific
impact.
Chromium- 0.0032
mg/L (D) and the EPA/ PADEP primary drinking water standard is < 0.100 mg/L
(OK).
Copper – 0.0074
mg/L (OK)- the secondary drinking water standard is 1.0 mg/L and the primary
drinking water standard is 1.3 mg/L. (OK)
Ethane – < 0.0012
mg/L – No specific drinking water
standard (OK)
Methane – < 0.002 mg/L – No specific drinking water standard. (OK).
The
well water is not above the new action limit of 7 mg/L. For more details, go to http://www.water-research.net/methanegas.htm
Magnesium- 7.72
mg/L (D)– no specific drinking water standard drinking water standard is
available. (OK)
Manganese– 0.0082
mg/L (Total)– Manganese is regulated as a secondary drinking water standard in Pennsylvania and the
action limit is 0.05 mg/L. Therefore,
the total manganese content does not exceed the secondary drinking water
standard. (OK)
Nickel - 0.0017
mg/L (D) – no specific drinking water standard drinking water standard is
available, but the EPA has suggest a MCL of 0.1 mg/L. (OK)
Nitrate+Nitrite-
N – 2.39 mg/L, this is well
below the EPA / PADEP drinking water limit of 10mg N/L for nitrate-N. (OK)-
Recommend testing for nitrite-N. Total
nitrogen- 2.61 mg/L.
diethyl-phthalate – 0.000029 mg/L , the EPA/PADEP drinking water
limit is 0.006 mg/L. The reported value
is less than the drinking water limit. (OK)
The data in the Citizens
Groundwater and Surfacewater database suggests that up to 8 % of private wells
may have a level of phthalates that exceed the drinking water limit.
“It is commonly used to make plastics more flexible.
Because diethyl phthalate is not a part of the chain of chemicals (polymers)
which makes up the plastics, it can be released fairly easily from these
products. These plastics are found in products such as toothbrushes, automobile
parts, tools, toys, and food packaging. Diethyl phthalate is also used in
cosmetics, insecticides, and aspirin”.http://www.atsdr.cdc.gov/phs/phs.asp?id=601&tid=112
Sodium –10.0 mg/L (D) – no specific drinking water standard
drinking water standard is available, but the EPA has added it to the Candidate
List to provide more analysis. The EPA’s
initial value of 20 mg/L has been clearly identified as not realistic. When chloride (salt is sodium chloride) is
present at a concentration of over 250 mg/L, the water can have an “off” taste.
At 400+ mg/L chloride, the water will taste definitely salty. (Source- Dr.
Brian Redmond, Professional Geologist). (OK)
Sulfate – 18.2
mg/L (OK) – drinking water standard is < 250 mg/L – this does not suggest any specific
impact.
Total Dissolved Solids – 148
mg/L – Total Dissolved Solids is
regulated as a secondary drinking water standard by the PADEP in Pennsylvania and the
action limit is 500 mg/L.
Uranium – 0.0037 mg/L (Total) – Uranium is regulated as a primary drinking
water standard by the EPA and PADEP in Pennsylvania
and the action limit is 0.030 mg/L. (OK)
Zinc
– 0.0069 mg/L (Total) – Zinc
is regulated as a secondary drinking water standard by the PADEP in Pennsylvania and the
action limit is 5.0 mg/L. (OK)
Ethylene glycol – the reported value is < 10 mg/L – there is
no standard, but the EPA has a guidance limit of < 7 mg/L. Other states have lower and higher standards:
At a minimum, I would recommend retesting for ethylene
glycol other other glycol compounds using a method that is more sensitive or
conducting some type of standard additions analysis.
No major problems
1. No major problem, but recommend testing for nitrite-N. The drinking water standard for nitrite-N is
1 mg/L. Since the concentration for
total nitrate and nitrite is over 2 mg/L, it is possible that the level of
nitrite-N is over 1 mg/L.
2. Retesting for glycols using a more sensitive technique is
recommended.
3. The detection of the plasticizer is not atypical or a red
flag for the region. The data in the Citizens Groundwater and Surfacewater database suggests that up to 8 % of private wells may have a level of phthalates that exceed the drinking water limit. Support the citizen groundwater surfacewater database - its Free !
Document can not be
copied in whole or part without the expressed written permission of Mr. Brian
Oram, B.F. Environmental Consultants Inc. http://www.bfenvironmental.com
Do you want to make a positive change in PA - that will cost you NO Money?
Help Support the Citizens Groundwater and Surfacewater Database and Submit Your Baseline Data !
Free Information
on Drinking Water Quality - http://www.water-research.net
Thank you for providing clear information on this. you can also refer Barium Chloride Manufacturer.
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