¹ The parametric value refers to the residual monomer concentration in the water as calculated according to specifications of the maximum release from the corresponding polymer in contact with the water. This is controlled by product specification.

² See also the nitrate-nitrite formula in regulation 4(c).

³ For these purposes, “pesticides” means—

• For these purposes, “pesticides” means—

  • — organic acaricides;

  • — organic algicides;

  • — organic fungicide;

  • — organic herbicides;

  • — organic insecticides;

  • — organic nematocides;

  • — organic rodenticides;

  • — organic slimicides;

  • — related products (inter alia, growth regulators and their relevant metabolites, degradation and reaction products). Only those pesticides likely to be present in a given supply need be monitored.

⁴ “Pesticides total” means the sum of the concentrations of the individual pesticides detected and quantified in the monitoring process.

⁵ The specified compounds are—

• The specified compounds are—

  • — benzo(b)fluoranthene;

  • — benzo(k)fluoranthene;

  • — benzo(ghi)perylene;

  • — indeno(1,2,3-cd)pyrene.

• The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.

⁶ The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.

⁷ The specified compounds are—

• The specified compounds are—

  • — bromodichloromethane;

  • — bromoform;

  • — chloroform;

  • — dibromochloromethane

• The parametric value applies to the sum of the concentrations of the individual compounds detected and quantified in the monitoring process.

¹ The water should not be aggressive.

² Only in the case of surface water or groundwater that has been influenced by surface water.

¹ Where treatment to reduce the level of radionuclides in water intended for human consumption has been taken, monitoring must be carried out under Part 1 of Schedule 2 to ensure the continued efficacy of the treatment.

² Enforcement action by a local authority is deemed justified on radiological protection grounds without further consideration where randon concentrates exceed 1,000 Bq/1.

³ If tritium concentration exceeds its parametric value, an investigation (which may include analysis) of the presence of artificial radionuclides must be carried out.