The need for construction project involves the secondary water supply to do secondary water supply water quality health
inspection! Secondary water supply refers to through the storage equipment and pressure, water purification facilities,
turn the tap water for users to form life drinking water supply. Relationship between drinking water quality safety of the
residents' health, so the state health department in order to ensure the security of drinking water health, issued strict
laws and regulations to strengthen the management of drinking water quality detection. Various laws and regulations
for all kinds of water supply, especially the secondary water supply facilities, water quality sampling point location,
test items and test frequency and so on all have clear requirements.
The secondary water supply test requirements
National health authorities to make clear a regulation: responsibility of water supply units should be regular inspection
quality and registration as a result, the water quality inspection, shall be assumed by the third party inspection aptitude.
1. The sample point set in the raw water inlet, outlet, plentiful water.
2. Water quality inspection items:
(1) shall measure project: chromaticity, pH, turbidity, odor and taste, visible to the naked eye, sulfate, chloride, ammonia
nitrogen, nitrite nitrogen, nitrate nitrogen, volatile phenol, oxygen consumption, total hardness, iron, manganese,
copper, lead, the total number of colonies, total coliforms,heat-resitant coliform bacteria, e. coli bacteria.
(2) test project: may, when necessary, depending on the type of water tank, disinfection methods and related inspection
items and disinfection by-products.
3. The monitoring frequency: inspection once a year.
Shanghai ShenFeng geology has CMA measurement certification, can provide including detecting shef-provided well water, secondary water supply, pipeline direct drinking water testing, field, producing water detection and all kinds of
water supply facilities, water quality testing services. If you have related demand, welcome to contact us.
Water quality detection parameter table (see detailed measurement certification schedule) :
Microbial indexes: total coliforms, heat-resistant coliform bacteria, e. coli bacteria, the total number of colonies, etc
Toxicology indexes: arsenic, hexavalent chromium, mercury, cadmium, lead, selenium, nickel, silver, cyanide, fluoride,
sulfide, nitrate, chloroform, carbon tetrachloride, chlorite, chlorate, phosphate, such as formaldehyde, DDT (666)
Sensory properties: odor and taste, visible to the naked eye, chromaticity, PH, turbidity
General chemical indicators: aluminum, iron, manganese, copper, zinc, chloride, sulfate, total soluble solids and total
hardness (CaCO3), the free residual chlorine, total chlorine, chlorine dioxide, volatile phenol, anionic synthetic detergent, etc
Detection on the basis of:
"Living drinking water hygiene supervision and management measures" (ministry of construction, the health ministry
make  no. 53)
"Shanghai secondary water supply for domestic and drinking water hygiene management method" (the Shanghai
municipal people's government in 1995 12 order)
"Drinking water health standard" (GB 5749-2006)
"Water quality standard of drinking water purification (CJ94-2005)
Other relevant national standards