Montehorquera MONTE HORQUERA · ENVIRONMENT
All this information comes from SINAC, the Spanish National Water Information System of the Ministry of Health, for the «Red de Distribución de Vilamarxant - 1» supply network. It is managed by Global Omnium under the responsibility of Ayuntamiento de Vilamarxant. Updated as of July 2026.
WATER SAFE TO DRINK
Last sample: 15/06/2026. The last 15 reported analyses have all passed.
Each bar compares the measured value with the legal limit (Royal Decree 3/2023). The shorter it is, the greater the safety margin.
Analytical bulletins reported to SINAC. All rated «safe to drink».
Search for any parameter (for example «nitrate», «lead», «hardness» or «chlorine») and scroll down to its entry: what it is, its value here, its health implications and why it is measured in water.
What it is: Bacterium living in the gut. Its presence in water indicates recent faecal contamination.
Health: Must be 0. Its absence is the best guarantee that the water doesn't transmit intestinal infections.
Why it's measured: It's the world's benchmark indicator of safe drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Faecal-contamination indicator bacterium, more resistant than E. coli.
Health: Must be 0. Together with E. coli, confirms the water is microbiologically safe.
Why it's measured: Complements E. coli in detecting faecal contamination.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: A very resistant bacterium whose spores survive for a long time; indicates possible older contamination.
Health: Their presence would indicate a risk of gastrointestinal illness. The legal limit is zero: there must be none.
Why it's measured: Monitors how effective treatment is against resistant micro-organisms.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: A broad group of bacteria; their presence warns of possible contamination or a disinfection fault.
Health: Their presence would indicate a risk of gastrointestinal illness. The legal limit is zero: there must be none.
Why it's measured: General indicator of network hygiene.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: General count of environmental (non-pathogenic) bacteria at room temperature.
Health: A low, stable value signals well-treated water. There's no numeric limit: it's watched for sudden changes.
Why it's measured: Detects changes in water quality or stagnation in the network.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Viruses that infect bacteria; used as an indicator of viral contamination.
Health: Their presence would indicate a risk of gastrointestinal illness. The legal limit is zero: there must be none.
Why it's measured: A modern indicator of viruses in water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: An element that can occur naturally in groundwater.
Health: Toxic in excess (skin, circulation, long-term cancer risk). Here it is 10 times below the limit.
Why it's measured: Closely monitored for its cumulative toxicity.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: A metal that can come from old pipes or solder.
Health: Neurotoxic, especially in childhood. The limit drops to 5 µg/L in 2036. Here it is well below.
Why it's measured: Monitored for its effect on children's neurological development.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Metals and elements that can reach the water from the ground, pipes or human activity.
Health: Toxic to the kidney and bones with prolonged exposure. Here it is 50 times below the limit.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Metals and elements that can reach the water from the ground, pipes or human activity.
Health: Neurotoxic. Well below the limit.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Metals and elements that can reach the water from the ground, pipes or human activity.
Health: Can cause skin allergies. Well below the limit.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Metals and elements that can reach the water from the ground, pipes or human activity.
Health: Limited because of chromium VI, a possible carcinogen. Here, well below.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Metals and elements that can reach the water from the ground, pipes or human activity.
Health: In excess they can be toxic (kidney, nervous system, etc.), which is why they have very strict limits. Here they appear well below the limit.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Metals and elements that can reach the water from the ground, pipes or human activity.
Health: In excess they can be toxic (kidney, nervous system, etc.), which is why they have very strict limits. Here they appear well below the limit.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: A naturally occurring radioactive element in some soils.
Health: Limited for its chemical toxicity (kidney). Well below the limit.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Metals and elements that can reach the water from the ground, pipes or human activity.
Health: In excess they can be toxic (kidney, nervous system, etc.), which is why they have very strict limits. Here they appear well below the limit.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Can come from copper pipes.
Health: Essential in small amounts; in excess gives a metallic taste and digestive discomfort. Well below the limit.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Occurs naturally; at the right doses it protects teeth.
Health: In excess it can affect teeth and bones. Here it's at a low, safe level.
Why it's measured: Monitored for its dual nature: beneficial at low doses, harmful in excess.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Metals and elements that can reach the water from the ground, pipes or human activity.
Health: In excess they can be toxic (kidney, nervous system, etc.), which is why they have very strict limits. Here they appear well below the limit.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Can come from the ground or from water-treatment processes.
Health: Well below the limit.
Why it's measured: They are monitored because they build up in the body and some are toxic even at low doses.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Gives colour and taste if high; usually comes from pipes or the ground.
Health: Not a health risk at these levels; it's an aesthetic parameter. Well below the limit.
Why it's measured: They describe the natural character of the water (harder or softer, more or less mineralised) depending on the source terrain.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Salts and minerals naturally dissolved in the water (calcium, magnesium, sodium, chlorides, sulphates…).
Health: Aesthetic parameter (can give colour). Well below the limit.
Why it's measured: They describe the natural character of the water (harder or softer, more or less mineralised) depending on the source terrain.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Comes mainly from agriculture (fertilisers) and reaches groundwater.
Health: This is the parameter to watch most closely here (43 of 50). In excess it affects oxygen transport in the blood, especially in infants. It's below the limit, but worth monitoring.
Why it's measured: A key indicator of agricultural influence on the aquifer.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: An intermediate form of nitrogen; its presence can indicate recent contamination or network problems.
Health: Well below the limit.
Why it's measured: They are the «overall picture» of water quality and give early warning of any change.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Its presence can warn of recent contamination.
Health: Not toxic at these levels; it's an indicator. Below the limit.
Why it's measured: They are the «overall picture» of water quality and give early warning of any change.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Measures the amount of dissolved organic matter in the water.
Health: A low value indicates clean water. It's watched to make sure it doesn't rise.
Why it's measured: Organic matter feeds micro-organisms and forms by-products when chlorinated.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Another way of estimating the organic matter in the water.
Health: Well below the limit.
Why it's measured: They are the «overall picture» of water quality and give early warning of any change.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: The part of the chlorine that has already reacted. A low value signals clean water.
Health: No risk at these levels.
Why it's measured: Disinfecting the water is essential; it is monitored so that by-products stay well below the limit.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: «Active» chlorine that remains in the water to protect it from micro-organisms throughout the network.
Health: This is what you sometimes notice in the smell or taste. Its presence is a good sign: it means the water stays protected all the way to the tap.
Why it's measured: Ensures the water arrives disinfected at every home.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: The main by-products of chlorinating water (chloroform and similar compounds).
Health: Limited for their possible long-term effect. Here they are 50 times below the limit (2 of 100).
Why it's measured: The most closely monitored disinfection by-product.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Substances formed when disinfecting water with chlorine (necessary to eliminate micro-organisms).
Health: A disinfection by-product; a possible carcinogen at high doses. Well below the limit.
Why it's measured: Disinfecting the water is essential; it is monitored so that by-products stay well below the limit.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Substances formed when disinfecting water with chlorine (necessary to eliminate micro-organisms).
Health: They are kept under control because in excess they could have long-term effects. It's the balance between disinfecting well and minimising by-products.
Why it's measured: Disinfecting the water is essential; it is monitored so that by-products stay well below the limit.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Substances formed when disinfecting water with chlorine (necessary to eliminate micro-organisms).
Health: They are kept under control because in excess they could have long-term effects. It's the balance between disinfecting well and minimising by-products.
Why it's measured: Disinfecting the water is essential; it is monitored so that by-products stay well below the limit.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Substances formed when disinfecting water with chlorine (necessary to eliminate micro-organisms).
Health: Another group of chlorination by-products. Well below the limit.
Why it's measured: Disinfecting the water is essential; it is monitored so that by-products stay well below the limit.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Organic chemical substances of industrial origin or from materials in contact with the water.
Health: They are limited because of their possible toxicity or long-term carcinogenic effect. Here they are well below the limit.
Why it's measured: They are checked as a health precaution against prolonged exposure.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Organic chemical substances of industrial origin or from materials in contact with the water.
Health: An industrial, carcinogenic compound; closely monitored. Below the limit.
Why it's measured: They are checked as a health precaution against prolonged exposure.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Organic chemical substances of industrial origin or from materials in contact with the water.
Health: They are limited because of their possible toxicity or long-term carcinogenic effect. Here they are well below the limit.
Why it's measured: They are checked as a health precaution against prolonged exposure.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: A substance used in plastics; a new parameter under the 2020/2184 regulation.
Health: Well below the limit.
Why it's measured: They are checked as a health precaution against prolonged exposure.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Organic chemical substances of industrial origin or from materials in contact with the water.
Health: They are limited because of their possible toxicity or long-term carcinogenic effect. Here they are well below the limit.
Why it's measured: They are checked as a health precaution against prolonged exposure.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Organic chemical substances of industrial origin or from materials in contact with the water.
Health: They are limited because of their possible toxicity or long-term carcinogenic effect. Here they are well below the limit.
Why it's measured: They are checked as a health precaution against prolonged exposure.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Organic chemical substances of industrial origin or from materials in contact with the water.
Health: They are limited because of their possible toxicity or long-term carcinogenic effect. Here they are well below the limit.
Why it's measured: They are checked as a health precaution against prolonged exposure.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Organic chemical substances of industrial origin or from materials in contact with the water.
Health: They are limited because of their possible toxicity or long-term carcinogenic effect. Here they are well below the limit.
Why it's measured: They are checked as a health precaution against prolonged exposure.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: «Forever chemicals»: very persistent substances used in industry (non-stick coatings, waterproofing…).
Health: «Forever chemicals». Here they appear at the detection limit (minimal traces), well below the legal limit.
Why it's measured: Recent regulation (EU 2020/2184): monitored as a precaution against their build-up in the environment and the body.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: The amount of dissolved calcium and magnesium. Our water is «hard» (mineralised), typical for the area.
Health: Not a health problem; calcium and magnesium are actually beneficial. It does explain the limescale in appliances and taps.
Why it's measured: Describes the character of the water and helps explain everyday limescale.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: The main mineral behind hardness; essential for bones and teeth.
Health: Not harmful at these levels; they are part of the taste and «hardness» of the water. Relevant to anyone watching sodium intake.
Why it's measured: They describe the natural character of the water (harder or softer, more or less mineralised) depending on the source terrain.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: An essential mineral; contributes to water hardness.
Health: Not harmful at these levels; they are part of the taste and «hardness» of the water. Relevant to anyone watching sodium intake.
Why it's measured: They describe the natural character of the water (harder or softer, more or less mineralised) depending on the source terrain.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: A naturally dissolved salt.
Health: Relevant for anyone on a low-salt diet: here it's 52, well below the limit of 200.
Why it's measured: Reported for people with hypertension or a controlled-sodium diet.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Salts and minerals naturally dissolved in the water (calcium, magnesium, sodium, chlorides, sulphates…).
Health: Not harmful at these levels; they are part of the taste and «hardness» of the water. Relevant to anyone watching sodium intake.
Why it's measured: They describe the natural character of the water (harder or softer, more or less mineralised) depending on the source terrain.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Salts and minerals naturally dissolved in the water (calcium, magnesium, sodium, chlorides, sulphates…).
Health: Gives a salty taste if high; aesthetic parameter. Below the limit.
Why it's measured: They describe the natural character of the water (harder or softer, more or less mineralised) depending on the source terrain.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Salts and minerals naturally dissolved in the water (calcium, magnesium, sodium, chlorides, sulphates…).
Health: In excess it can give an odd taste and a laxative effect. Below the limit.
Why it's measured: They describe the natural character of the water (harder or softer, more or less mineralised) depending on the source terrain.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Measures how many dissolved salts there are overall: more salts, more conductivity.
Health: An overall measure of mineralisation, not a risk. Below the limit.
Why it's measured: Sums up at a glance how mineralised the water is.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Measures whether the water is acidic or alkaline. 7 is neutral.
Health: 7.2 is practically neutral, ideal. The legal range is 6.5–9.5.
Why it's measured: The right pH protects pipes and makes disinfection more effective.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Indicates whether the water tends to form scale or to corrode pipes.
Health: A value close to 0 is balanced. No health risk.
Why it's measured: They are the «overall picture» of water quality and give early warning of any change.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Measures how «cloudy» or clear the water is (suspended particles).
Health: The lower it is, the cleaner it looks. 0.2 is very clear water, well below the limit.
Why it's measured: Clear water makes disinfection easier and signals good treatment.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: A herbicide widely used in agriculture and gardening.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Residues of plant-protection products (agriculture) or their breakdown products.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: A herbicide banned in the EU for years; sometimes persists in the aquifer. Here, minimal traces.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Residues of plant-protection products (agriculture) or their breakdown products.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Residues of plant-protection products (agriculture) or their breakdown products.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Residues of plant-protection products (agriculture) or their breakdown products.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Residues of plant-protection products (agriculture) or their breakdown products.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Residues of plant-protection products (agriculture) or their breakdown products.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Residues of plant-protection products (agriculture) or their breakdown products.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Residues of plant-protection products (agriculture) or their breakdown products.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Residues of plant-protection products (agriculture) or their breakdown products.
Health: The legal limit is very strict: 0.1 µg/L per substance and 0.5 µg/L for the sum. In Vilamarxant traces are detected well below this or not detected at all.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
What it is: Residues of plant-protection products (agriculture) or their breakdown products.
Health: The sum of ALL pesticides analysed is 0.02 out of a limit of 0.5: 25 times below. Most aren't even detected.
Why it's measured: Dozens of pesticides are analysed to make sure farming in the area doesn't affect the drinking water.
Source: SINAC · Ministry of Health · Global Omnium laboratory (GAMASER)
No parameter found with that name.
Official data from SINAC — Ministry of Health. The health explanations are informational (based on WHO and Ministry of Health criteria) and do not replace professional analysis or advice.
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