The Private Water Supplies Regulations (Northern Ireland) 2009

Regulation 7

SCHEDULE 2 N.I. Requirements for Risk Assessment

1.  When undertaking or reviewing and updating a risk assessment for the purposes of regulation 7 the Department shall do so in accordance with the provisions of this Schedule. N.I.

Commencement Information

I1 Sch. 2 para. 1 in operation at 18.1.2010, see reg. 1

2.  A risk assessment shall comprise the following— N.I.

(a) documentation on and a description of the supply, including the catchment from which the supply draws water;

(b) a hazard assessment and risk characterisation;

(c) an identification of the measures by which potential risks may be controlled;

(d) establishment of verification procedures,

and for the purposes of this paragraph, “hazard” means a biological, chemical, physical or radiological agent that has the potential to cause harm or danger to human health; and “risk” means the likelihood of identified hazards causing harm in exposed populations in a specified time, including the magnitude of that harm and/or the consequences of such harm.

Commencement Information

I2 Sch. 2 para. 2 in operation at 18.1.2010, see reg. 1

3.  In respect of a supply which comprises, either alone or in any combination thereof, catchments, surface water or ground water, the risk assessment shall include provision [F1 , where appropriate,] in relation to the relevant matters specified in Table A of this Schedule. N.I.

Textual Amendments

F1 Words in Sch. 2 para. 3 inserted (20.4.2010) by The Private Water Supplies (Amendment) Regulations (Northern Ireland) 2010 (S.R. 2010/131), regs. 1(1), 5(2)

Commencement Information

I3 Sch. 2 para. 3 in operation at 18.1.2010, see reg. 1

4.  In respect of a supply which receives treatment, including treatment at source and any point thereafter, the risk assessment shall make provision [F2 , where appropriate,] in relation to the relevant matters specified in Table B of this Schedule. N.I.

Textual Amendments

F2 Words in Sch. 2 para. 4 inserted (20.4.2010) by The Private Water Supplies (Amendment) Regulations (Northern Ireland) 2010 (S.R. 2010/131), regs. 1(1), 5(3)

Commencement Information

I4 Sch. 2 para. 4 in operation at 18.1.2010, see reg. 1

5.  In respect of a supply which comprises intermediate tanks and distribution, the risk assessment shall include provision [F3 , where appropriate,] in relation to the relevant matters specified in Table C of this Schedule. N.I.

TABLE A

SOURCE AND CATCHMENT

(1) Source of supply	(2) Information to be considered in the risk assessment
(1) Catchments	(i) geology and hydrology (ii) meteorology and weather patterns (iii) general catchment and river health (iv) wildlife (v) competing water uses (vi) nature and intensity of development and land use (vii) other activities in the catchment that potentially release contaminants into source water (viii) planned future activities
(2) Surface water	(i) description of water body type (e.g. river, reservoir, dam) (ii) flow and reliability of source water (iii) retention times (iv) water constituents (physical, chemical, microbial) (v) protection (e.g. enclosures, access) (vi) recreational and other human activity (vii) bulk water transport
(3) Groundwater	(i) confined or unconfined aquifer (ii) aquifer hydrogeology (iii) flow rate and direction (iv) dilution characteristics (v) recharge area (vi) wellhead protection (vii) depth of casing (viii) bulk water transport

TABLE B

TREATMENT

(i) treatment process (ii) equipment design (iii) monitoring equipment and automation (iv) water treatment chemicals used (v) treatment efficiencies (vi) disinfection removals of pathogens (vii) disinfection residuals/contact time (viii) maintenance schedules

TABLE C

INTERMEDIATE TANKS AND DISTRIBUTION

(i) reservoir/tank design (ii) retention times (iii) seasonal variations (iv) protection (e.g. covers, enclosures, access) (v) distribution system design (vi) hydraulic conditions (e.g. water age, pressures, flows) (vii) backflow protection (viii) disinfection residuals (ix) maintenance and cleaning schedules

Textual Amendments

F3 Words in Sch. 2 para. 5 inserted (20.4.2010) by The Private Water Supplies (Amendment) Regulations (Northern Ireland) 2010 (S.R. 2010/131), regs. 1(1), 5(4)

Commencement Information

I5 Sch. 2 para. 5 in operation at 18.1.2010, see reg. 1