If you searched “Midwest City water,” here is the short version first. Midwest City runs its own water system, and its water report lists no water bought from Oklahoma City. Most of the water comes from Lake Thunderbird and is treated at the city’s own plant, with groundwater wells making up the rest. For questions about the report or the city’s lead service line inventory, the report gives one number: 405-739-1204.
The rest of this is for anyone who wants to know what is in Midwest City water: where it comes from, what the newest report shows, what it leaves out, and how to check it yourself.
Where Midwest City water comes from
The city’s Water Master Plan, finished in November 2025, says most of Midwest City’s supply is surface water from Lake Thunderbird, about 4 million gallons on an average day, treated at the city’s water treatment plant on Water Plant Road. The remaining demand is met by groundwater wells around the city.
The two documents count those wells differently. The master plan says 26 active wells. The yearly water quality report says 18. Neither explains the gap, so we are giving you both numbers.
What Midwest City’s 2025 report shows
Every public water system has to publish a yearly water quality report, called a Consumer Confidence Report. Midwest City’s newest one covers calendar year 2025. A few terms first: ppm means parts per million, ppb means parts per billion, and the MCL (maximum contaminant level) is the highest level federal rules allow in drinking water.
- Nitrate: highest result 0.5 ppm, with a range of 0.12 to 0.5. The MCL is 10.
- Arsenic: not in the list of contaminants detected in 2025. That is a real difference from Moore, where our post on Moore water covers a report with arsenic at the top of the list.
- Uranium: highest result 3.71 micrograms per liter, the same unit as ppb. The MCL is 30.
- Combined radium: highest result 4.5 pCi/L, a measure of radioactivity, with a range of 3.2 to 4.5. The MCL is 5.
- Gross alpha, another radioactivity measure: highest result 6.87 pCi/L. The MCL is 15.
- Lead: the 90th percentile result was 1.2 ppb, the highest single sample was 10.5, and no sites were over the action level of 15.
- Coliform: in July, 1.64% of samples came back positive.
The report’s violations table says, in its own words, “No Violations Occurred in the Calendar Year of 2025.”
Want to talk through what this means for your house? Call us, or send the form with your address and what you are noticing at the tap. We will tell you which system fits and what it costs.
Chlorine, chlorine dioxide and by-products
The report lists the disinfectant under one heading, “chlorine/chloramines.” The highest monthly average was 2 mg/L, in February 2025, and the running annual average was 1 mg/L. The federal limit is 4.
The master plan is more specific. It describes the plant using chlorine before and after treatment, plus chlorine dioxide, and it does not mention chloramine. That is different from Oklahoma City, whose Hefner and Overholser plants finish their water with chloramine, according to the city’s 2017 water conservation plan.
Disinfectant leaves by-products behind, and the report lists them:
- Total trihalomethanes: highest running average 52 ppb. Single results ranged from 0 to 84.2. The MCL of 80 applies to the running average, and the report lists no violation.
- Haloacetic acids: highest running average 21 ppb, range 0 to 36.5. The MCL is 60.
- Chlorite, a by-product of chlorine dioxide: highest result 0.253 ppm. The federal limit is 1.0.
The report also lists sodium at up to 44.3 mg/L. There is no federal limit for sodium.
What about hardness?
There is no hardness figure in Midwest City’s report. Hardness is not a regulated contaminant, so a utility does not have to publish it.
The master plan does say something useful about it. When it sets treatment goals, it says the city keeps hardness at a level similar to its groundwater on purpose, because softer water is generally more corrosive to pipes. It gives that as a goal, not a number, and we are not going to print a number the city has not published. Oklahoma City is in the same spot, which our post on how hard Oklahoma City water is explains.
What this means for a Midwest City home
Nothing in this report says Midwest City water is unsafe to drink, and we are not going to say it either. What it gives you is disinfectant in the water at your tap, and a city that keeps its water about as hard as its wells on purpose.
For the whole house, the Standard Whole-Home Softener + Filtration pairs 48,000 grains of softening with coconut-shell carbon for chlorine and chloramine in one tank. It is $2,699 installed, the same price on city water or a well.
For the water you drink and cook with, the HW800 AlkaPro Tankless RO makes up to 800 gallons a day through 7 stages, is certified to NSF/ANSI 58, and removes lead and other heavy metals, dissolved solids and chlorine.
Every system is fitted by our own plumbing crew. You can see what we do across town on our Midwest City service area page.
Pick the right system for your Midwest City home Call us and tell us what you are noticing, or send the form. We will tell you which system fits, and give you the price.
How to check Midwest City water yourself
- Read the report. The city posts its water quality reports on the Public Works “Studies and Reports” page of its website. When we checked on 11 November 2026, the newest one there was labeled 2025 and covered 2024. The report covering 2025 is on the Oklahoma Department of Environmental Quality’s Drinking Water Watch site, under water system OK1020806.
- Call the city. The report gives 405-739-1204 for questions and for the lead service line inventory.
- Ask about hardness directly. It is not in the report, so ask the city.
Get system info and pricing for your Midwest City home
Call Good Bro’s or fill out the form. We will tell you what fits your house and what it costs, $2,699 installed for the Standard system on city water or a well.