MCLG vs. MCL

MCLG vs. MCL

Dierolf Plumbing and Water Treatment wrote a homeowner-friendly breakdown of two terms that appear on every water quality report but rarely get explained: MCLG and MCL. The short version is that an MCLG (Maximum Contaminant Level Goal) is the EPA's ideal health-based target, while an MCL (Maximum Contaminant Level) is the legally enforceable limit. The two numbers are often different, and that gap is the key insight. MCLs are set by starting with the health goal and then factoring in what's realistically achievable across thousands of public water systems given available technology and cost. For known carcinogens like lead and arsenic, the MCLG is zero (meaning no level of exposure is considered fully safe) but the enforceable MCL is higher because eliminating them entirely isn't always feasible at scale. The practical takeaway for homeowners: water that meets the MCL is legally compliant, but it isn't necessarily at the ideal health threshold.

Water Treatment for Medical & Dental

Kinetico makes the case for on-site water treatment in medical, dental, and orthodontic offices, and the business argument is straightforward. Most practices either rely on municipal tap water (which contains chlorine, minerals, and sediment that can damage sensitive equipment) or pay for bottled water delivery, which the company prices out at up to $9 per gallon. Kinetico says their K5 Drinking Water Station brings that cost down to $0.29 per gallon across up to six point-of-use locations, with ROI typically seen within 12 to 24 months. Beyond drinking water, the guide covers the full range of commercial water problems in healthcare settings: scale buildup on dental chairs and sterilizers, corrosion from hard water, and the need for UV sanitization in offices on well water. Medical and dental offices can be an underserved commercial segment that have consistent, high-volume water needs, and real equipment protection concerns.

Know Your Pipe Threads (Sponsored)

Ever had a fitting that almost screws in but won't seal? That's usually a thread mismatch. Not all threads are the same, and using the wrong type leads to leaks or stripped threads. 

At Specialty Sales, we work with all the common thread types, and we can help you identify what you need. Here's what to know: 

What's Available:

• 🔧 NPT (National Pipe Thread): Tapered threads that seal metal-to-metal with sealant or tape 

• ⭕ Straight Thread: Parallel threads that seal with an O-ring—no sealant needed 

• 🇬🇧 BSPP (British Standard Parallel): Like straight thread, uses a bonded washer 

• ⚠️ BSPT (British Standard Tapered): Looks like NPT but has a different thread angle—NOT interchangeable with NPT 

Check out Darrin's full video walking through each thread type and how to identify them, or read the complete guide on our blog: 

Not sure which thread you have? Contact Specialty Sales by clicking here or reply to this email directly. 

Tools for Leak Detection

Mermaid Water & Plumbing breaks down how acoustic sensors and thermal imaging have changed the way professionals locate hidden plumbing leaks. The Virginia-based company explains that acoustic detection works by picking up the distinct vibration created when pressurized water escapes through a crack or pinhole. Sensors placed along a pipe path compare sound intensity to pinpoint the exact source, even under concrete slabs or behind finished walls. Thermal imaging works differently, using infrared cameras to detect the temperature changes that moisture causes on surrounding surfaces. Neither technology is foolproof on its own: acoustic readings can be affected by pipe material and ambient noise, while thermal cameras can't distinguish moisture from insulation gaps without additional confirmation. Used together, though, the two methods give technicians a high-confidence fix point before a single wall gets opened.

Semiconductors

ClearWater Industries covers the water treatment demands behind semiconductor manufacturing and the purity standards involved make residential and even most commercial water treatment look straightforward by comparison. Semiconductor fabrication uses massive volumes of water for rinsing wafers and cleaning equipment, and even trace amounts of contaminants (dissolved metals, organic compounds, microscopic particles) can cause defects in finished chips. The target is ultrapure water, a standard so strict it's measured by electrical conductivity rather than contaminant concentration. Achieving it requires a multi-stage system: pretreatment filtration, reverse osmosis to strip dissolved salts and metals, ion exchange polishing to remove remaining ionic compounds, and advanced oxidation to tackle trace organics.

What else is happening:

• The EPA sent a cybersecurity alert to water system owners and operations nationwide, urging utilities to strengthen cybersecurity amid Iran concerns

• WQA Podcast drops a new episode tracking the industry’s growth through 2027

• PNW-based United Water Services explains how homeowners can shock a well for iron bacteria to eliminate the orange slime

• Family-owned Tri-County Pump Service explains how home water treatment can remove PFAS