§ 109.302. Special monitoring requirements.
(a) The Department may require a public water supplier to conduct monitoring in addition to that required under § 109.301 (relating to general monitoring requirements) if the Department has reason to believe the public water system is not in compliance with the action level, MCL, MRDL or treatment technique requirement for the contaminant.
(b) The Department may require a public water supplier to conduct additional monitoring to provide information on contamination of the water supply where a potential health hazard may exist in the water supply and monitoring required under § 109.301 may not be adequate to protect the public health.
(c) The Department may require a public water supplier to conduct special monitoring for an unregulated contaminant if the Department has reason to believe the contaminant is present in the public water system and creates a health risk to the users of the public water system.
(d) The Department will provide a schedule for sampling, instructions for sampling methods and handling samples, and analytical procedures to be followed by public water systems required to perform special monitoring.
(e) The Department may designate special monitoring requirements on a case-by-case basis for experimental facilities.
(f) To enable the Department to determine if a public water supplier is using a source directly influenced by surface water, the Department may require a public water supplier to conduct monitoring to evaluate the direct influence of surface water upon the source of supply. Monitoring shall be conducted for at least 6 months to include both the wet and dry periods of the year. Samples shall be taken from the collection facilities and measurements shall include the following:
(1) Daily field measurement of temperature, pH, specific conductance and turbidity.
(2) Daily measurement of water level, or flow, and precipitation necessary to establish climatic conditions.
(3) Weekly measurements for total coliform.
(4) Other measurements as required by the Department to evaluate the direct influence of surface water upon the source of supply.
(g) The Department may reduce or eliminate the monitoring required under subsection (f) if the public water supplier demonstrates and the Department determines that the source of supply is not directly influenced by surface water.
Authority The provisions of this § 109.302 amended under section 4(a) of the Pennsylvania Safe Drinking Water Act (35 P.S. § 721.4(a)); and section 1920-A(b) of The Administrative Code of 1929 (71 P.S. § 510-20(b)).
Source The provisions of this § 109.302 adopted December 7, 1984, effective December 8, 1984, 14 Pa.B. 4479; amended June 16, 1989, effective June 17, 1989, 19 Pa.B. 2543; amended May 15, 1992, effective May 16, 1992, 22 Pa.B. 2621; amended October 7, 1994, effective October 8, 1994, 24 Pa.B. 5175; amended July 20, 2001, effective July 21, 2001, 31 Pa.B. 3895; amended August 9, 2002, effective August 10, 2002, 32 Pa.B. 3894; amended August 17, 2018, effective August 18, 2018, 48 Pa.B. 4974. Immediately preceding text appears at serial pages (391356) to (391357).
Cross References This section cited in 25 Pa. Code § 109.301 (relating to general monitoring requirements); 25 Pa. Code § 109.303 (relating to sampling requirements); 25 Pa. Code § 109.701 (relating to reporting and recordkeeping); 25 Pa. Code § 109.1003 (relating to monitoring requirements); and 25 Pa. Code § 109.1403 (relating to monitoring waiver fees).
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