Drinking Water Contaminated by Industry: What You Can Do

If your tap, well, borewell or hand-pump water has changed colour, smell or taste since a factory started nearby, stop drinking it and get it tested at a government or accredited laboratory. Then do three things in writing: ask the water supply agency or the District Magistrate for a safe alternative supply, ask the health department to test and survey the area, and complain to the State Pollution Control Board about the suspected source. Clean drinking water is treated by the courts as part of the right to life, so authorities cannot simply ignore it. If they do, the National Green Tribunal can order testing, safe supply, closure of the source and compensation.

This guide is about the first weeks after you notice the problem: staying safe, getting reliable test results, getting a safe supply arranged, recording health effects, and making the polluter and the authorities answerable. If you need to build detailed proof linking a factory to an aquifer over time, our companion guide on proving groundwater contamination from industry goes into that.

For the full range of remedies against factory effluent, see industrial water pollution legal remedies.

The essentials

Our water has changed since the factory came up. What should we do first?

Stop drinking it, and stop children and old people drinking it first. Use bottled water, a tanker, or a source well away from the factory until you know what is in it. Boiling kills germs but does nothing to heavy metals such as chromium or lead, and it can concentrate some chemicals. A household RO unit removes some contaminants, but you cannot know whether it is enough until the water has been tested.

Next, write down what changed and when. Colour (yellow, brown, black, milky), smell (chemical, rotten egg, sweet, kerosene), taste (bitter, metallic, salty), foam, an oily film, staining of buckets and clothes, skin rashes after bathing. Note which houses are affected and which are not, and how far they are from the factory, its drain or its waste yard. That pattern is often the first real clue to the source.

Then get the water tested, and put three requests in writing on the same day: safe supply, a health check, and action against the source. The rest of this guide explains each one.

How do we know it is the factory and not something else?

Often you will not know at first, and it is better to admit that than to overclaim. Some contaminants are natural. Fluoride and arsenic occur in groundwater in many parts of India without any industry nearby, and iron gives water a reddish tint in many areas. Nitrate can come from fertiliser and septic tanks. Bacterial contamination usually comes from sewage, a broken pipeline or a nearby latrine, not from a factory.

Industrial contamination tends to leave a signature. Chromium points to tanneries and electroplating, lead to battery recycling, dark colour and high dissolved solids to distilleries and dye houses, solvents and unusual organic chemicals to chemical and pharmaceutical units. If the contaminant in your water matches what the factory uses, appeared after the factory started, and is worse closer to it, the case for an industrial source is strong.

This is why one test is rarely enough. Test the affected source, a source closer to the factory if there is one, and a source well away from it in the opposite direction. That comparison does more than any single report.

Which authority handles which part of the problem

Drinking water contamination involves several departments at once. Write to each about the part it is responsible for, and copy the DM on all of it.

How to get the water tested so the result counts

Use a laboratory whose report will be taken seriously: the district or state water testing laboratory, a State Board laboratory, or a private laboratory accredited by NABL for the parameters you need. Tell the laboratory what you suspect, because a basic test covers pH, hardness and a few common items and will miss chromium or solvents unless you ask for them. Compare the results with the BIS drinking water specification, IS 10500, which sets acceptable and permissible limits for each parameter.

Collect the sample in a clean bottle the laboratory provides, or one rinsed several times with the water being sampled. For metals, laboratories often supply bottles with a preservative. Run a hand pump or tap for a few minutes before filling. Label each bottle with the source, the date and time, and the name of the person who took it, and photograph the sampling. If you can, have two or three neighbours present and note their names.

A private report is enough to trigger action. For a case before the tribunal, the most persuasive reports are those from official sampling, done by the board or a committee with notice to the factory. So use your private report to demand official testing, not as a substitute for it.

Can we demand safe water from the authorities while this is sorted out?

Yes, and you should ask in writing straight away. Supplying drinking water is a statutory function of municipal bodies, jal boards and state water supply agencies, and in villages it runs through the panchayat and the public health engineering department. Courts have long treated access to clean drinking water as part of the right to life under Article 21. Where a source is found unsafe, the agency can seal or mark the hand pump, arrange tankers and look for an alternative source.

Address the request to the executive engineer of the water supply agency, with a copy to the DM, and attach your test report. Ask for a specific thing: tankers for named mohallas until a safe source is restored, sealing of named hand pumps, testing of all sources in the area. Keep the request short. A one-page letter with a test report and a list of affected households is harder to sit on than a long grievance.

Under the polluter pays principle, the cost of alternative supply and clean-up can later be recovered from the polluter. The tribunal has directed polluting units to pay for exactly this. But do not wait for that question to be settled before asking for safe water.

What to do about health effects

Get anyone with symptoms seen by a doctor, and tell the doctor what water they have been drinking. Skin rashes, stomach problems, joint pain, discoloured teeth, and in children, repeated illness are all worth recording. Keep every prescription, test report and bill. If the health department holds a camp, get a copy of the findings for your area.

Health records are the hardest evidence to collect later and the most persuasive when it comes to compensation. A tribunal asked to award compensation to a village wants to see who was affected, how and since when. A file of prescriptions with dates, matched against the timeline of the factory and the test reports, does that far better than a general statement that 'many people fell sick'.

Be careful not to overstate. If a doctor does not link a condition to water, do not claim the link yourself in the complaint. Present the records and let the inspecting committee or an expert draw conclusions.

What to do, in order, when industry contaminates your drinking water

Most of these steps can be done in the first two weeks. The aim is a safe supply quickly and a written record that makes later action straightforward.

The file you should build from day one

The board tested and says the factory is fine. Now what?

This happens often, and it does not end the matter. A board inspection usually samples the factory's outlet on the day of the visit. If the unit knew the visit was coming, or if the damage was done through a soak pit, a reverse borewell or an old lagoon rather than the visible outlet, the outlet sample can pass while the wells stay contaminated. Ask for the inspection report through RTI and read what was actually sampled.

Then write back to the board, point out what was missed, and ask for sampling of the affected wells, the groundwater inside the factory premises and any lagoon or waste yard, with notice to you so that you can be present. If the board will not do that, the tribunal can order a joint committee to do it. A passing outlet sample and a failing hand-pump sample side by side, in the same month, is itself a reason for a wider inquiry.

Contaminated tap water in a city: is it sewage or industry?

In cities, contaminated tap water is more often caused by sewage entering a leaking supply pipeline than by industry. The signs are a foul smell, cloudy water and outbreaks of stomach illness in one area, often after the supply has been off and pressure has dropped. That is the water supply agency's problem to fix, and the complaint should go to it and the municipal health department.

Industrial contamination of piped supply happens where the source itself, a river intake or a group of borewells, is polluted by factory discharge upstream. If your city's supply comes from a river or canal with industry upstream, and the change is chemical rather than sewage-like, ask the agency for the raw water test results at the intake, and complain to the State Board about the upstream discharge. Our guide on industrial discharge into rivers covers that route, and municipal sewage in lakes and rivers covers the sewage side.

What the NGT can do when authorities fail

The NGT is the forum for most drinking water contamination caused by industry, because the dispute arises under the Water Act and the Environment (Protection) Act. Under section 14 it can deal with the pollution, and under section 15 it can award relief and compensation to victims and order restoration of the environment. Any person aggrieved, including a gram panchayat, an RWA or an NGO, can apply under section 18.

In practice, the tribunal often forms a joint committee of the CPCB, the State Board and the District Magistrate to inspect, take samples from the factory and the affected wells, and report. Directions commonly include supply of safe water to affected households, closure or restriction of the polluting unit, remediation of the aquifer or soil, and environmental compensation, sometimes with a part earmarked for the affected community. See compensation for pollution damage for how claims are put together.

Do not wait too long. The six-month limit for section 14 runs from when the cause of action first arose, though continuing contamination helps. The five-year limit for compensation under section 15 is more forgiving, but evidence fades fast.

How a colony or village should organise

Advocate B.K. Singh's usual advice to RWAs and panchayats facing contaminated water is to choose one coordinator and keep one file. Every report, letter, reply, prescription and photo goes into it, in date order, with a single index. Many good cases are weakened because the evidence is scattered across a dozen phones and nobody can say which letter went where.

The coordinator should also keep one list of affected households, with the source each uses and any illness recorded. In matters Advocate B.K. Singh has taken to the tribunal on behalf of affected communities, that household list, matched with test results by source, has been the document the joint committee relied on most. It turns a village's grievance into something an inspecting officer can verify house by house.

Mistakes people make with contaminated water complaints

The commonest mistake is relying on a single home test kit or a strip test. These are useful for a first look, but no authority will act on them. The second is testing only the affected source. Without a comparison sample from further away, the factory can say the contamination is natural or has always been there, and you have nothing to answer with.

The third is complaining only to the pollution board while nobody arranges safe water. Families keep drinking the water for months while letters go back and forth. Ask for safe supply first and separately. The fourth is posting everything on social media but filing nothing in writing. Publicity can help, but the SDM and the tribunal will ask for diary numbers, not screenshots. Our guide on photos, lab reports and RTI replies as evidence explains how to keep material in usable form, and complaining about untreated effluent covers the letters to the board.

Checklist for the first two weeks

Where to go from here

If the suspected source is a sugar mill or distillery, read distillery and sugar mill effluent. If the factory has been fined and you want to know how such amounts are worked out, see what environmental compensation means. For filing before the tribunal, read how to file a case in the NGT.