*698 OPINION
A jury found appellant, John Watts, guilty of the misdemeanor offense of water pollution. The court assessed punishment at one year confinement in Harris County Jail, probated for two years, and a $10,000 fine, plus court costs, with $9,000 of the fine probated, one hundred hours community supervision, and other standard conditions of probation. In nine issues, appellant alleges the trial court erred in refusing to suppress evidence, challenges the validity of the jury charge, asserts the evidence is factually insufficient to support appellant’s conviction, and contends the water pollution statute is unconstitutionally vague. We affirm.
In June of 1998, the Harris County Health Department received a complaint regarding trash and junk strewn about a piece of property located in an unincorporated portion of Harris County. Deanna Copeland, an inspector with Harris County’s Health Department, went to the location to investigate the complaint. She discovered that the complaint was valid and, after further investigation, determined that appellant owned the property. Inspector Copeland then mailed appellant a notice asking him to abate the nuisance on his property. Appellant did not respond to the notice. On August 5, 1998, Copeland returned to the property accompanied by her supervisor, Inspector Phillip Moore. The property was still blanketed with trash and debris. Copeland and Moore walked the adjoining property line and noted the odor of sewage coming from appellant’s property. They then went to appellant’s door to discuss the nuisance. A man, later identified at trial as appellant, came to the door. The health inspectors identified themselves and asked the man if he was aware of the nuisance problem. The man stated he was appellant’s brother and walked away. The inspectors left the property.
Inspector Copeland sent appellant another notice, via registered mail, but it was returned unclaimed. She then sent appellant another notice, via first class mail. Copeland returned to the property on October 20, 1998. She again smelled sewage and was able to photograph, while standing on adjacent property, sewage pooling on appellant’s land. On November 3,1998, Copeland returned to the property with Inspector Michael Pugh. They entered appellant’s property and a man exited a trailer and told them to leave. Before leaving, Pugh advised the man he needed to address the sewage problem and gave the man his card. Copeland and Pugh returned to the property on November 9, 1998, accompanied by three Harris County Deputy Constables, Sgt. Bill Ruland, Deputy Sanford, and Deputy Herra. The deputies knocked on appellant’s door. No one answered. Deputy Sanford discovered a pool of sewage while walking to the rear of appellant’s residence to knock on the back door. The team then inspected the entirety of the property. They discovered a broken waste pipe and another pool of sewage. Inspector Pugh took a sample of the sewage. Sgt. Ruland photographed the property. A laboratory analysis of the sample taken by Pugh revealed that the substance contained fecal coliform.
In his first issue, appellant contends the trial court improperly refused to suppress evidence obtained during the search and seizure on appellant’s property and testimony related thereto. Generally, we review a trial court’s ruling on a motion to suppress for an abuse of discretion.
Oles v. State,
On November 9, 1998, Inspectors Copeland and Pugh, Sgt. Ruland, and the two other deputy constables entered appellant’s property, searched the area, and removed a soil sample without a search warrant or appellant’s consent. Appellant filed a pre-trial motion to suppress evidence asserting that the search and seizure violated the Texas Constitution and Article 38.23 of the Code of Criminal Procedure. The court denied the motion after hearing counsel’s arguments during the State’s presentation of its evidence. The court held that section 343.024 of the Health & Safety Code, entitled “Authority to Enter Premises,” authorized the State to enter the premises to inspect and investigate the nuisance caused by the standing sewage and the debris on the property. 1
The Texas Constitution provides that the people of this state “shall be secure in their persons, houses, papers and possessions, from all unreasonable seizures or searches.” Tex. Const, art. I, § 9. This provision is enforced by an exclusionary rule which declares that “[n]o evidence obtained by an officer or other person in violation of any provisions of the Constitution or laws of the State of Texas, or of the Constitution or laws of the United States of America, shall be admitted in evidence against the accused on the trial of any criminal case.” Tex.Code Crim. PROc. Ann. art. 38.23 (Vernon Supp.2001). Accordingly, warrantless intrusions and searches are presumptively unreasonable.
Roth v. State,
Here, the incriminating evidence, i.e., the raw sewage was observed, photographed, and gathered in an open area behind appellant’s mobile home. There is, of course, no reasonable expectation of privacy in open fields.
Oliver v. United States,
We first observe that not every trespass upon the curtilage constitutes a search. Here, for example, law enforcement authorities were merely attempting to contact appellant. Moreover, it is well established that law enforcement agents
*700
have the same right as any other person to enter onto residential property and walk up to the front door.
Noted v. State,
Most home owners arguably have a greater expectation of privacy in their back yards than they do in their front lawns. Common courtesy and a respect for privacy demand that visitors approach the front of a house. In many cases, homeowners shroud their back yards with a “privacy” fence for the specific purpose of enhancing their expectation of privacy in their back yards. Thus, most homeowners would rarely expect a stranger to knock on the back door. However, in some instances, courts have held it was not unreasonable for police to knock on the back door of a residence. For example, in
Long v. State,
Likewise, in
Atkins v. State,
Here, law enforcement officers had previously made two unsuccessful attempts to communicate with appellant via the mail. In an effort to contact appellant, law enforcement agents went to the front door of his mobile home. When they received no answer, one of the officers proceeded to the rear of the home to knock on the back door. Thus, even if law enforcement officers were within the curtilage, they did not enter with the purpose of conducting a search.
This is not to say, however, that the sewage was discovered inadvertently. The sewage could be seen and was clearly apparent from the side boundaries of appellant’s property. While we cannot say the officer was necessarily surprised by his discovery of sewage behind appellant’s home, the legislature has authorized county officials charged with the enforcement of health, environmental, safety, or fire laws to enter any premises in an unincorporated area of the county at a reasonable time to inspect, investigate, or abate a public nuisance. Tex. Health & Safety Code Ann. § 343.024 (Vernon 2001). The statute requires that proper identification be displayed to the occupant before conducting the search. Thus, under the statute, law enforcement agents would, in *701 most instances, be required to enter the curtilage to display their identification to the owner or occupant.
Here, photographs of appellant’s small mobile home show it to be in a wooded area. Open areas roughly define what might be considered a front and back yard, but there does not appear to be any fencing or landscaping to shield the back yard from public access or view. Because of the open nature of the surrounding property, the lack of a well defined yard, the absence of a privacy fence, the unobstructed visibility of appellant’s back yard from adjacent properties, and the small size of his home, we find appellant could only have had a minimal expectation of privacy. Accordingly, under the record presented here, it was reasonable for a law enforcement agent to knock on the back door in an attempt to make contact with appellant and/or display identification.
Finally, the evidence seized, i.e., the sewage sample, was taken under the “plain view” exception. The officers were lawfully on appellant’s property, and it was immediately apparent to the inspectors and deputies that they had evidence before them.
See Green v. State,
Appellant’s second, third, fourth, and fifth issues concern the jury charge and the trial court’s decision to take judicial notice of the holding of a Court of Criminal Appeals opinion. In all four issues, appellant contests the validity of the trial court’s charge to the jury. When assessing alleged error in the charge, we must first determine whether error, in fact, exists in the charge.
Hutch v. State,
Appellant’s second issue asserts that the trial court erred in taking judicial notice of an opinion of the Court of Criminal Appeals and orally instructing the jury on law consistent with that opinion. Appellant contends a trial court cannot take judicial notice of the holding of a superior court’s opinion. We disagree. A rudimentary concept of our system of jurisprudence is that a lower court must yield to superior court’s interpretation of a statute.
In re Maxwell,
In
American Plant Food,
the issue presented to the court was whether a stagnant drainage ditch that flowed only intermittently was part of the “water in the state.” The Court of Criminal Appeals held the statute “makes no distinction between perennial and intermittent streams.”
*702
American Plant Food,
In his third issue, appellant asserts American Plant Foods is no longer applicable because the statute has since been amended. The relevant portion of section 26.001, however, remains unchanged since it was last interpreted in American Plant Food. See Tex. WateR Code Ann. § 26.001(5) (Vernon 2000). We overrule appellant’s third issue.
Appellant’s fourth issue asserts that the trial court’s charge imper-missibly commented on the weight of the evidence. It is axiomatic that a trial court is prohibited from expressing an opinion about, or commenting upon, the weight of the evidence.
Taylor v. State,
Appellant’s fifth issue avers that the trial court impermissibly expanded the statutory definition of water in the state by including a drainage ditch within the scope of the statute. As previously stated, a drainage ditch is a watercourse that falls within the Water Code’s statutory definition of “water in the state.”
American Plant Food Corp.,
Appellant’s sixth, seventh, and eighth issues contend that the evidence was factually insufficient to support appellant’s conviction. When reviewing factual sufficiency challenges, we must conduct a neutral review of the evidence.
Johnson v. State,
Appellant contends in his sixth issue that the evidence is factually insufficient to support the jury’s finding that appellant intentionally or knowingly caused or allowed the discharge of sewage. The statute requires the State to establish that appellant intentionally or knowingly, with respect to his conduct, discharged or allowed the discharge of a waste or a pollutant. Tex. Watee Code Ann. § 7.145 (Vernon 2000). Appellant asserts he did not cause or allow the discharge. Instead, he claims the evidence establishes that he merely failed to timely clean-up an unavoidable discharge. Witnesses for the State testified that they repeatedly informed appellant of the sewage problem, but, according to their testimony, appellant ignored their requests that he abate the nuisance on his property. The State’s witnesses also testified that they observed a *703 pipe discharging sewage directly onto the ground. This testimony provides a factually sufficient basis for the jury to determine that appellant intentionally or knowingly caused or allowed the discharge of a waste or pollutant on his property. We overrule appellant’s sixth issue.
Appellant’s seventh issue asserts that the evidence was factually insufficient to support the jury’s determination that the discharge of sewage was into or adjacent to any water in the state. The statute places the burden upon the State to establish that appellant discharged or allowed the discharge of a waste or pollutant into or adjacent to water in the state.
Id.
On appeal, appellant contends that it defies common sense to “stretch” the term “adjacent” to include a sewage overflow fifty yards away from the nearest water. The fact finder rejected the same argument forwarded by appellant at trial. The term adjacent is not defined by the Water Code. Accordingly, we must afford the term its plain, ordinary meaning unless the statute is ambiguous or would lead to absurd results.
Lane v. State,
Appellant’s eighth issue contends that the evidence is factually insufficient to support the jury’s determination that a drainage ditch was within the statutory definition of “water in the state.” In this issue appellant claims, absent a citation to the record, that the evidence at trial establishes that the drainage ditch is dry and overgrown with grass and that there is no testimony that the drainage ditch ever contained water. This statement is contrary to appellant’s testimony at trial. Appellant testified at trial that the ditch “drains the whole area on up past that warehouse and it drains more since they put that little road up there.” In the same issue, appellant asserts that the legislature clearly intended to exclude a ditch from the definition of water. As previously stated, we are controlled by the Court of Criminal Appeals’ analysis in American Plant Food, 587 S.W.2d 679 (Tex.Crim.App.1979). Accordingly, we overrule appellant’s eighth issue.
In his final issue appellant asserts that section 7.145 of the Water Code is unconstitutionally vague and impermissi-bly broad in its use of the term “adjacent to.” Appellant contends the statute failed to give him notice as to what conduct was prohibited. Thus, we must determine whether appellant, as an ordinary person, received sufficient information from the statute to understand exactly what conduct is prohibited so that he could act in a lawful manner.
Weyandt v. State,
The judgment of the trial court is affirmed.
Notes
. Section 343.024 states:
(a) A county official, agent, or employee charged with the enforcement of health, environmental, safety, or fire laws may enter any premises in the unincorporated area of the county at a reasonable time to in-sped, investigate, or abate a nuisance or to enforce this chapter.
(b) Before entering the premises, the official, agent, or employee must exhibit proper identification to the occupant, manager, or other appropriate person.
