(a) As used in this section:

(1) “Laboratory or firm” means an environmental laboratory registered by the Department of Public Health pursuant to section 19a-29a;

(2) “Private well” means a water supply well that meets all of the following criteria: (A) Is not a public well; (B) supplies a population of less than twenty-five persons per day; and (C) is owned or controlled through an easement or by the same entity that owns or controls the building or parcel that is served by the water supply;

(3) “Public well” means a water supply well that supplies a public water system;

(4) “Well for semipublic use” means a water supply well that (A) does not meet the definition of a private well or public well, and (B) provides water for drinking and other domestic purposes; and

(5) “Water supply well” means an artificial excavation constructed by any method for the purpose of getting water for drinking or other domestic use.

(b) The Commissioner of Public Health may adopt regulations in the Public Health Code for the preservation of the public health pertaining to (1) protection and location of new water supply wells or springs for residential construction or for public or semipublic use, and (2) inspection for compliance with the provisions of municipal regulations adopted pursuant to section 22a-354p.

(c) The Commissioner of Public Health shall adopt regulations, in accordance with chapter 54, for the testing of water quality in private residential wells and wells for semipublic use. Any laboratory or firm which conducts a water quality test on a private well serving a residential property or well for semipublic use shall, not later than thirty days after the completion of such test, report the results of such test to (1) the public health authority of the municipality where the property is located, and (2) the Department of Public Health in a format specified by the department, provided such report shall only be required if the party for whom the laboratory or firm conducted such test informs the laboratory or firm identified on the chain of custody documentation submitted with the test samples that the test was conducted in connection with the sale of such property. No regulation may require such a test to be conducted as a consequence or a condition of the sale, exchange, transfer, purchase or rental of the real property on which the private residential well or well for semipublic use is located.

(d) Prior to the sale, exchange, purchase, transfer or rental of real property on which a residential well is located, the owner shall provide the buyer or tenant notice that educational material concerning private well testing is available on the Department of Public Health web site. Failure to provide such notice shall not invalidate any sale, exchange, purchase, transfer or rental of real property. If the seller or landlord provides such notice in writing, the seller or landlord and any real estate licensee shall be deemed to have fully satisfied any duty to notify the buyer or tenant that the subject real property is located in an area for which there are reasonable grounds for testing under subsection (g) or (j) of this section.

(e) The Commissioner of Public Health shall adopt regulations, in accordance with chapter 54, to clarify the criteria under which the commissioner may issue a well permit exception and to describe the terms and conditions that shall be imposed when a well is allowed at a premises (1) that is connected to a public water supply system, or (2) whose boundary is located within two hundred feet of an approved community water supply system, measured along a street, alley or easement. Such regulations shall (A) provide for notification of the permit to the public water supplier, (B) address the quality of the water supplied from the well, the means and extent to which the well shall not be interconnected with the public water supply, the need for a physical separation, and the installation of a reduced pressure device for backflow prevention, the inspection and testing requirements of any such reduced pressure device, and (C) identify the extent and frequency of water quality testing required for the well supply.

(f) No regulation may require that a certificate of occupancy for a dwelling unit on such residential property be withheld or revoked on the basis of a water quality test performed on a private residential well pursuant to this section, unless such test results indicate that any maximum contaminant level applicable to public water supply systems for any contaminant listed in the public health code has been exceeded. No administrative agency, health district or municipal health officer may withhold or cause to be withheld such a certificate of occupancy except as provided in this section.

(g) The local director of health may require a private residential well or well for semipublic use to be tested for arsenic, radium, uranium, radon or gross alpha emitters, when there are reasonable grounds to suspect that such contaminants are present in the groundwater. For purposes of this subsection, “reasonable grounds” means (1) the existence of a geological area known to have naturally occurring arsenic, radium, uranium, radon or gross alpha emitter deposits in the bedrock; or (2) the well is located in an area in which it is known that arsenic, radium, uranium, radon or gross alpha emitters are present in the groundwater.

(h) Except as provided in subsection (i) of this section, the collection of samples for determining the water quality of private residential wells and wells for semipublic use may be made only by (1) employees of a laboratory or firm certified or approved by the Department of Public Health to test drinking water, if such employees have been trained in sample collection techniques, (2) certified water operators, (3) local health departments and state employees trained in sample collection techniques, or (4) individuals with training and experience that the Department of Public Health deems sufficient.

(i) Any owner of a residential construction, including, but not limited to, a homeowner, on which a private residential well is located or any general contractor of a new residential construction on which a private residential well is located may collect samples of well water for submission to a laboratory or firm for the purposes of testing water quality pursuant to this section, provided (1) such laboratory or firm has provided instructions to said owner or general contractor on how to collect such samples, and (2) such owner or general contractor is identified to the subsequent owner on a form to be prescribed by the Department of Public Health. No regulation may prohibit or impede such collection or analysis.

(j) The local director of health may require private residential wells and wells for semipublic use to be tested for pesticides, herbicides or organic chemicals when there are reasonable grounds to suspect that any such contaminants might be present in the groundwater. For purposes of this subsection, “reasonable grounds” means (1) the presence of nitrate-nitrogen in the groundwater at a concentration greater than ten milligrams per liter, or (2) that the private residential well or well for semipublic use is located on land, or in proximity to land, associated with the past or present production, storage, use or disposal of organic chemicals as identified in any public record.

(k) Any water transported in bulk by any means to a premises currently supplied by a private well or well for semipublic use where the water is to be used for purposes of drinking or domestic use shall be provided by a bulk water hauler licensed pursuant to section 20-278h. No bulk water hauler shall deliver water without first notifying the owner of the premises of such delivery. Bulk water hauling to a premises currently supplied by a private well or well for semipublic use shall be permitted only as a temporary measure to alleviate a water supply shortage.

(1959, P.A. 30; P.A. 77-614, S. 475, 610; P.A. 89-305, S. 26, 32; P.A. 92-251; P.A. 93-381, S. 9, 39; P.A. 94-85, S. 3; P.A. 95-257, S. 12, 21, 58; P.A. 97-296, S. 1, 4; P.A. 02-102, S. 4; P.A. 07-244, S. 4; P.A. 08-184, S. 24; P.A. 11-242, S. 72; P.A. 12-197, S. 7; P.A. 16-66, S. 20; P.A. 17-146, S. 15.)

History: P.A. 77-614 replaced public health council with commissioner of health services, effective January 1, 1979; Sec. 19-13a transferred to Sec. 19a-37 in 1983; P.A. 89-305 added provision concerning inspection for compliance with municipal aquifer protection regulations; P.A. 92-251 added Subsec. (b) re testing of private residential wells; P.A. 93-381 replaced commissioner of health services with commissioner of public health and addiction services, effective July 1, 1993; P.A. 94-85 amended Subsec. (b) to provide that a laboratory or firm which conducts a water quality test of a private well shall report the results of such test to the local health authority if the test was conducted within six months, rather than three months, of a sale of the property served by such well and specified that results be reported within 30 days after test made; P.A. 95-257 replaced Commissioner and Department of Public Health and Addiction Services with Commissioner and Department of Public Health, effective July 1, 1995; P.A. 97-296 amended Subsec. (b) to prohibit regulations from requiring the testing of well water as a consequence or a condition of the sale, exchange, transfer, purchase or rental of real property, and added new Subsecs. (c) to (g) re regulations, effective July 8, 1997; P.A. 02-102 added new Subsec. (c) requiring the adoption of regulations to clarify the criteria under which a well permit exception may be granted and to describe the terms and conditions to be imposed when a well is allowed at a premises that is connected to a public water supply, and relettered existing Subsecs. (c) to (g) as Subsecs. (d) to (h); P.A. 07-244 amended Subsec. (c) by designating as Subdiv. (1) existing provision re wells at premises connected to a public water supply system, adding Subdiv. (2) re wells located within 200 feet of approved community water supply system and redesignating existing Subdivs. (1), (2) and (3) as Subparas. (A), (B) and (C); P.A. 08-184 made a technical change in Subsec. (c); P.A. 11-242 amended Subsec. (b) by designating existing requirement re water quality test report to public health authority as Subdiv. (1), by adding Subdiv. (2) re water quality test report to Department of Public Health and by defining “laboratory or firm”, added new Subsec. (c) re owner to provide buyer or tenant with notice re availability of educational material concerning private well testing, redesignated existing Subsecs. (c) and (d) as Subsecs. (d) and (e), deleted former Subsec. (e) re regulations not requiring testing of private residential wells for herbicides or insecticides, added new Subsec. (f) re local director of health’s authority to require private residential well to be tested for radionuclides, added new Subsec. (g) re persons authorized to collect water samples from private residential wells, redesignated former Subsec. (f) as Subsec. (h) and amended same to designate existing provision re laboratory or firm to provide instruction on collection of well water samples as Subdiv. (1) and add Subdiv. (2) re notice to subsequent owners that general contractor or former owner was responsible for collecting well water samples, deleted former Subsec. (g) re regulations not requiring testing of private residential wells for organic chemicals, deleted former Subsec. (h) re regulation waiver provision applicable to wells not tested between December 30, 1996, and July 8, 1997, added new Subsec (i) re local director of health’s authority to require private residential well to be tested for pesticides, herbicides or organic chemicals, and made technical changes; P.A. 12-197 amended Subsec. (f) by replacing provisions re testing for radionuclides with provisions re testing for arsenic, radium, uranium, radon or gross alpha emitters; P.A. 16-66 amended Subsecs. (b), (f), (g) and (i) by adding references to wells for semipublic use; P.A. 17-146 added new Subsec. (a) re definitions, redesignated existing Subsec. (a) as Subsec. (b), redesignated existing Subsec. (b) as Subsec. (c) and amended same to replace provision re report shall not be required if party for whom laboratory or firm conducted test informs laboratory or firm that test was not conducted within 6 months of sale of property with provision re report shall only be required if party for whom laboratory or firm conducted test informs laboratory or firm identified on chain of custody documentation that test was conducted in connection with sale of property, and to delete provision defining laboratory or firm, redesignated existing Subsecs. (c) to (i) as Subsecs. (d) to (j), added Subsec. (k) re water transported in bulk, and made conforming changes.