So, the correct headline would be “safe drinking water ruled not to be covered by the US constitution”. There are other binding agreements and regulations than the constitution in the US.
> The Jackson plaintiffs alleged that their city government deliberately withheld information about the water’s toxicity, and exacerbated the problem through a series of boil-water notices - a practice that can eliminate some bacterial contamination, but also concentrates lead in water. Engelhardt stated there is no “constitutional right to truthful information from officials during a public health crisis”
The constitutional question (and note that state Constitutions, e.g. Massachusetts, may instead cover it) is just one piece of the mess.
The 9th makes it clear that not all rights need to be explicitly in the text.
As for the content: the law says what it says. Where in the constitution of the United States of America and its amendments does it say that a state government must be truthful about public health statements?
The law says what it says. A behavior might be rotten, evil, illegal under other documents, and an all-round bad idea and still not a violation of, in particular, the constitution of the United States of America and its amendments