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Best Septic Service Companies in Newton, IA (2026)

5 septic service companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Newton: Miller Drain and Sewer Service, CR Score 61/100; 5.0★ from 21 Google reviews; open 24/7.

  2. 2

    Most-reviewed: Certified Septic Service, 42 Google reviews at 5.0★, the most of 5 ranked; ranked #2.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

5 Newton septic service companies are ranked here by CR Score, from ten published factors. 1 is open 24/7, 1 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 4.9★ across 5 rated businesses.

Top 5 septic service companies in Newton at a glance

Top 5 septic service companies in Newton at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Miller Drain and Sewer Service615.0★ (21)Newton24/7Overall
2Certified Septic Service595.0★ (42)Des Moines, 12 mi away—Most reviews
3A-1 Complete Septic Tank Services554.4★ (27)Pleasant Hill, 24 mi away——
4AAA Septic Service Inc.514.9★ (11)Marshalltown, 25 mi away——
5Thomas Brothers Septic Tank Services502.1★ (11)Des Moines, 25 mi away——

The 5 best septic service companies in Newton, ranked

Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.

  2. #2 Certified Septic Service

    Based in Des Moines, 12 mi away

    59/100CR Score

    Ranked #2 because of its Google rating and review volume: 5.0★ from 42 Google reviews, the most in Newton.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 5.0★ from 42 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2121 Rodeo Ave, Monroe, IA 50170
    View profile for Certified Septic Service(641) 828-6364

  4. #4 AAA Septic Service Inc.

    Based in Marshalltown, 25 mi away

    51/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.9★ from 11 Google reviews, listed on Google as “Septic system service”.

    Based on 8 of 10 factors; credentials and recency not yet collected.

    • 4.9★ from 11 Google reviews
    Hours
    Mon–Fri 8 AM–4 PM · Sat–Sun closed
    Address
    303 S 3rd Ave, Marshalltown, IA 50158
    View profile for AAA Septic Service Inc.(641) 754-9914

How we ranked Newton septic service companies

We scored 5 Newton septic service companies on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 3, 2026.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Newton data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Septic service companies in Newton: frequently asked questions

Who is the best septic service company in Newton?

By CR Score, the highest-ranked septic service company in Newton, IA is Miller Drain and Sewer Service with a CR Score of 61/100. It has 5.0★ from 21 Google reviews. It is open 24/7. Certified Septic Service (#2) and A-1 Complete Septic Tank Services (#3) follow. We ranked 5 septic service companies on ten factors, last updated November 3, 2026.

How many septic service companies are there in Newton?

ContractorsRanked ranks 5 septic service companies serving Newton, IA. 1 of them is based in Newton; the rest serve it from nearby towns. Counts are as of November 2026.

Which septic service companies in Newton are open 24/7?

1 ranked septic service company in Newton posts 24/7 hours. The highest-ranked is Miller Drain and Sewer Service (#1). Hours come from each business's Google listing as of November 2026, so call to confirm.

Which septic service companies in Newton work on weekends?

1 of 5 ranked septic service companies post Saturday hours and 1 post Sunday hours. The highest-ranked open Saturdays is Miller Drain and Sewer Service (#1). Posted hours are office hours; crews may book weekend jobs separately.

What Google rating do Newton septic service companies have?

The median Google rating among 5 rated septic service companies in Newton is 4.9★, with a median of 21 reviews. Certified Septic Service has the most, 42 reviews, and ranks #2. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank septic service companies?

Each septic service company gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do septic service companies outside Newton count in this ranking?

Yes, if they are within 25 mi of the Newton city center, our service radius for septic service companies. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Can septic service companies pay to rank higher on ContractorsRanked?

No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.

Update log for Newton

  1. November 2026: CR Scores recalculated for 5 septic service companies serving Newton.

More septic service companies and Newton pages

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