ESDHD recommends homeowners have the well sampled at least once a year for bacteria, and every 5 years for chemicals, or if any change in odor, taste, or color.
Improper well caps, dug wells and wells at or below grade are risky because
contaminants can seep into the well and may be potentially hazardous to drink.
Water Tests Include:
Listed below are the required analyses in accordance with Connecticut Public Health Code Section 19-13-B101 "Testing of Water Quality in Private Water Supply Systems".
|
Parameter
|
Limit
|
Comments
|
|
Total Coliform Bacteria
|
None Present MCL
|
MCL
|
|
pH
|
6.4 - 10.0 SU MCL
|
MCL
|
|
Apparent Color
|
< 15 SU
|
|
|
Odor
|
< 2 Odor Threshold Number
|
|
|
Chloride
|
250 mg/L MCL
|
MCL
|
|
Hardness
|
150 mg/L
|
|
|
Nitrate-Nitrogen
|
10 mg/L MCL
|
MCL
|
|
Nitrite-Nitrogen
|
1 mg/L MCL
|
MCL
|
|
Sulfate
|
250 mg/L
|
|
|
Turbidity
|
< 5 NTU MCL (for surface water)
|
MCL (for surface water)
|
|
Iron
|
0.3 mg/L EPA secondary contaminant
|
EPA secondary contaminant
|
|
Manganese
|
0.05 mg/L EPA secondary contaminant
|
EPA secondary contaminant
|
|
Sodium
|
28 mg/L CT Notification level Volatile Organic Chemicals
|
CT Notification level
|
*Water must be analyzed for alachlor, atrazine, dicamba, ethylene dibromide (EDB), metolachlor, simazine & 2, 4-D if nitrates are equal to or exceed 10 mg/l.
SU = standard units
mg/L = milligrams per liter = ppm
MCL = Maximum Contaminant Level
Note: Parameters, which do not have a MCL, are recommended limits. Local
municipalities may have additional testing requirements.
