Statutes, codes, and regulations
Colorado Administrative Code
Department 1000 - Department of Public Health and EnvironmentDivision 1002 - Water Quality Control Commission (1002 Series)
Rule 5 CCR 1002-11 - REGULATION NO. 11 - COLORADO PRIMARY DRINKING WATER REGULATIONS
Section 5 CCR 1002-11.46 - ANALYTICAL REQUIREMENTS AND LABORATORY CERTIFICATION RULE

5 Colo. Code Regs. § 1002-11.46

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Current through Register Vol. 47, No. 22, November 25, 2024
Section 5 CCR 1002-11.46 - ANALYTICAL REQUIREMENTS AND LABORATORY CERTIFICATION RULE
11.46(1)Applicability

For all public water systems, the supplier must ensure that all samples meet the testing requirements and analytical methods of this rule.

11.46(2)Bacteriological Analytical Requirements
(a)Total Coliform Analytical Requirements

The testing requirements and analytical methods for total coliform analysis are specified in 40 CFR 141.852(a-c).

(b)Fecal Coliform Analytical Requirements

The testing requirements and analytical methods for fecal coliform analysis are specified in 40 CFR 141.21(f)(5).

(c)Escherichia coliAnalytical Requirements

The testing requirements and analytical methods for Escherichia coli analysis are specified in 40 CFR 141.25(f)(6-7), 40 CFR 141.704(b) and 40 CFR 141.852(a-c).

(d)CryptosporidiumAnalytical Requirements

The testing requirements and analytical methods for Cryptosporidium analysis are specified in 40 CFR 141.704(a) and 40 CFR 141.707(c)(2).

(e)Groundwater Source Analytical Requirements

The testing requirements and analytical methods for groundwater source water sample analysis are specified in 40 CFR 141.402(c).

(f) Heterotrophic Bacteria Analytical Requirements

The testing requirements and analytical methods for heterotrophic bacteria are specified in 40 CFR 141.74(a).

11.46(3)Inorganic Chemical Analytical Requirements

The testing requirements and analytical methods for inorganic chemical analysis are specified in 40 CFR 141.23(a)(4)(i) and 40 CFR 141.23(k)(1-2).

11.46(4)SOC and VOC Analytical Requirements

The testing requirements and analytical methods for SOCs and VOCs are specified in 40 CFR 141.24(e).

11.46(5)PCB Analytical Requirements

The testing requirements and analytical methods for PCBs are specified in 40 CFR 141.24(h)(13).

11.46(6)Radionuclide Analytical Requirements

The testing requirements and analytical methods for radionuclides are specified in 40 CFR 141.25(a-c).

11.46(7)Turbidity Analytical Requirements

The testing requirements and analytical methods for turbidity are specified in 40 CFR 141.74(a).

11.46(8)Disinfection, Disinfection Byproducts, and Disinfection Byproduct Precursors Analytical Requirements
(a)Disinfection Byproduct Precursors Rule Analytical Requirements

The testing requirements and analytical methods for the disinfection byproduct precursor rule are specified in 40 CFR 141.131(a)(1-2) and 40 CFR 141.131(d)(1-6).

(b)Disinfection Residual Analytical Requirements

The testing requirements and analytical methods for free chlorine, chloramines, chlorine dioxide, and ozone are specified in 40 CFR 141.74(a), 40 CFR 141.131(a), and 40 CFR 141.131(c).

(c)Disinfection Byproducts Rule Analytical Requirements

The testing requirements and analytical methods for disinfection byproducts rule are specified in 40 CFR 141.131(a) and 40 CFR 141.131(b).

11.46(9)Lead and Copper Analytical Requirements

The testing requirements and analytical methods for lead, copper, pH, conductivity, calcium, alkalinity, orthophosphate, silica, and temperature are specified in 40 CFR 141.89(a)(1-4).

11.46(10)Secondary Contaminants Analytical Requirements

The testing requirements and analytical methods for secondary contaminants are specified in 40 CFR 143.4(b).

11.46(11)Alternative Analytical Techniques

The use of alternative testing requirements and analytical methods are specified in 40 CFR 141.27(a) and Appendix A to Subpart C of 40 CFR 141.

11.46(12)Certified Laboratories and Laboratory Certification
(a)Certified Laboratories

The requirements for a certified laboratory are specified in 40 CFR 141.28(a).

(b)Laboratory Certification for Inorganic Chemicals

The laboratory certification requirements for inorganic chemicals are specified in 40 CFR 141.23(k)(3).

(c)Laboratory Certification for VOCs

The laboratory certification requirements for VOCs are specified in 40 CFR 141.24(f)(17) and 40 CFR 141.24(f)(20).

(d)Laboratory Certification for SOCs

The laboratory certification requirements for SOCs are specified in 40 CFR 141.24(h)(19).

(e)Laboratory Certification forCryptosporidium, E. coli, and Turbidity

The laboratory certification requirements for Cryptosporidium, E. coli, and turbidity are specified in 40 CFR 141.705(a-c).

(f)Laboratory Certification for Lead and Copper

The laboratory certification requirements for lead and copper are specified in 40 CFR 141.89(a)(1).

11.46(13)Laboratory Compositing

The requirements for compositing of samples by a laboratory are specified in 40 CFR 141.24(f)(14).

11.46(14)Calculating Contact Time Values
(a) The requirements for calculating contact time values are specified in 40 CFR 141.74(b)(3-4).
(b) Disinfectant contact time in pipelines must be calculated based on the consideration of the liquid level in the pipeline and dividing that volume by the maximum hourly flow rate through that pipe. Disinfectant contact time within mixing basins and storage reservoirs must be determined by tracer studies, or an equivalent demonstration, or by baffling factor estimates considering the minimum operating level.

5 CCR 1002-11.46

38 CR 07, April 10, 2015, effective 4/30/2015
41 CR 11, June 10, 2018, effective 6/30/2018
41 CR 23, December 10, 2018, effective 12/30/2018
43 CR 07, April 10, 2020, effective 4/30/2020
43 CR 17, September 10, 2020, effective 9/30/2020
45 CR 24, December 25, 2022, effective 1/14/2023
46 CR 18, September 25, 2023, effective 10/15/2023